Mitsubishi PUHZ-RP8YHA, PUHZ-RP10YHA Service Manual

Page 1
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
TECHNICAL & SERVICE MANUAL
R410A
Outdoor unit [model names]
[Service Ref.]
No.OC317
PUHZ-RP8YHA
PUHZ-RP10YHA
PUHZ-RP8YHA PUHZ-RP10YHA
CONTENTS
1. SAFETY PRECAUTION·······································2
2.
COMBINATION OF INDOOR AND OUTDOOR UNITS
3. FEATURES···························································7
5. DATA ····································································9
6. OUTLINES AND DIMENSIONS·························11
8. WIRING SPECIFICATIONS ·······························13
9. SPECIFICATIONS FOR ELECTRICAL WORK ····14
10.
REFRIGERANT SYSTEM DIAGRAM
11. CAPACITY CURVES ··········································18
12.APPLICABLE EXTENSION PIPE FOR EACH MODEL ···19
13. TROUBLESHOOTING········································25
14. DISASSEMBLY PROCEDURE ··························71
15. PARTS LIST ·······················································79
Model name indication
16. OPTIONAL PARTS ······························BackCover
····6
···················17
PUHZ-RP8YHA PUHZ-RP10YHA
Page 2
1 SAFETY PRECAUTION
Use new refrigerant pipes.
Make sure that the inside and outside of refrige­rant piping is clean and it has no contamination such as sulfur hazardous for use, oxides, dirt, shaving particles, etc. In addition, use pipes with specified thickness.
Store the piping to be used during installation indoors and keep both ends of the piping sealed until just before brazing. (Leave elbow joints, etc. in their packaging.)
Use ester oil, ether oil or alkylbenzene oil (small amount) as the refrigerant oil applied to flares and flange connections.
In case of using the existing pipes for R22, be careful with the followings.
· Change flare nut to the one provided with this product. Use a newly flared pipe.
· Avoid using thin pipes.
Charge refrigerant from liquid phase of gas cylinder.
If the refrigerant is charged from gas phase, composition change may occur in refrigerant and the efficiency will be lowered.
Do not use refrigerant other than R410A.
If other refrigerant (R22 etc.) is used, chlorine in refrige­rant can cause deterioration of refrigerant oil etc.
Use a vacuum pump with a reverse flow check valve.
Vacuum pump oil may flow back into refrigerant cycle and that can cause deterioration of refrigerant oil etc.
Use the following tools specifically designed for use with R410A refrigerant.
The following tools are necessary to use R410A refrigerant.
Keep the tools with care.
If dirt, dust or moisture enter into refrigerant cycle, that can cause deterioration of refrigerant oil or malfunction of com­pressor.
Do not use a charging cylinder.
If a charging cylinder is used, the composition of refrigera­nt will change and the efficiency will be lowered.
Flare tool
Electronic refrigerant charging scale
Vacuum pump adaptor
Size adjustment gauge
Gauge manifold
Torque wrench
Gas leak detector
Charge hose
Tools for R410A
Contamination inside refrigerant piping can cause deterio­ration of refrigerant oil etc.
If dirt, dust or moisture enter into refrigerant cycle, that can cause deterioration of refrigerant oil or malfunction of com­pressor.
If large amount of mineral oil enter, that can cause deterio­ration of refrigerant oil etc.
Ventilate the room if refrigerant leaks during operation. If refrigerant comes into contact with a flame, poisonous gases will be released.
1-1. CAUTIONS RELATED TO NEW REFRIGERANT
Cautions for units utilizing refrigerant R410A
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[1] Cautions for service
(1) Perform service after collecting the refrigerant left in unit completely. (2) Do not release refrigerant in the air. (3) After completing service, charge the cycle with specified amount of refrigerant. (4) When performing service, install a filter drier simultaneously.
Be sure to use a filter drier for new refrigerant.
[2] Additional refrigerant charge
When charging directly from cylinder
· Check that cylinder for R410A on the market is syphon type.
· Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.)
Unit
Gravimeter
[3] Service tools
Use the below service tools as exclusive tools for R410A refrigerant.
No. Specifications
1 Gauge manifold ·Only for R410A
·Use the existing fitting
·Use high-tension side pressure of 5.3MPa·G or over.
2 Charge hose ·Only for R410A
·Use pressure performance of 5.09MPa·G or over.
3 Electronic scale 4 Gas leak detector ·Use the detector for R134a, R407C or R410A. 5 Adaptor for reverse flow check ·Attach on vacuum pump. 6 Refrigerant charge base 7 Refrigerant cylinder ·Only for R410A Top of cylinder (Pink)
8 Refrigerant recovery equipment
specifications
Cylinder with syphon
. (UNF1/2)
3
Page 4
1-2. CHANGED POINT
Measure the existing pipe thickness and check for damage.
The existing pipe thickness meets specifi­cations and the pipes are not damaged.
The existing pipe thickness does not meet specifications or the pipes are damaged.
Check if the existing air conditioner can operate.
The existing air conditioner can operate. The existing air conditioner cannot operate.
After operating the cooling system for about 30 minutes, do a pump down work.
Use a refrigerant collecting device to collect the refrigerant.
Check the oil condition when collecting the refrigerant.
Oil is clean. (Clear to brownish color)
Oil is dirty. (Black color)
When the compressor bearings are glazed, rotation scratches are present, or the compressor breaks down, iron particles or oil deterioration will blacken the oil.
Disconnect the existing air conditioner from the pipes.
The existing piping can be reused. After flaring the pipes again, connect the new air conditioner.
The existing pipes cannot be reused. Use new pipes.
Perform the following inspections: air tightness test, vacuum dryness (additional refrigerant charge), gas leakage check
Replacement operation
Test operation
Replacement operation is the operation by which impurities remaining in the existing piping (chlorinated compounds) are captured by the activated carbon filter (replacement filter) in the outdoor unit.
• This model will automatically begin the replacement operation after it has been installed when it enters the initialization phase for normal heating or cooling. How­ever , the unit will not automatically perf orm the replacement operation if it is moved to a new location where it will be used with existing R22 refrigerant piping. Under such conditions, always use the SW8-2 operations to perform the replacement operation before beginning the test operation.
• Precautions when reusing existing R22 refrigerant pipes (1) Flowchart
Connecting a new air conditioner to existing R22 refrigerant pipes
1 Flare the pipe for the use with R410A refrigerant.
Use the flare nut attached to indoor and outdoor unit of the new air conditioner only.
2 When reusing existing R22 refrigerant pipes of which gas pipe is [28.58mm and, in addition, when the outdoor unit is
installed to lower position than the indoor unit, be sure to change the setting of the DIP SW8-1 on the controller circuit board of the outdoor unit to ON.
This is to increase the speed of refrigerant passing in the gas pipe so that refrigerant oil can smoothly flow in the system.
• Use a different-diameter joint or brazing for the connection.
3 When reusing standard-size existing R22 refrigerant pipes.
The pipes can be reused with pipe length restriction described on 12-1.
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(2) Cautions for refrigerant piping work
1/4” 3/8” 1/2” 5/8” 3/4”
7/8”
1”
1”-1/8”
6.35
9.52
12.70
15.88
19.05
22.20
25.40
28.58
0.8
0.8
0.8
1.0
— — — —
0.8
0.8
0.8
1.0
1.0
1.0
1.0
1.0
Nominal
dimensions
Diagram below: Piping diameter and thickness
Outside
diameter
(mm)
Thickness
(mm)
R410A R22
1/4” 3/8” 1/2” 5/8” 3/4”
6.35
9.52
12.70
15.88
19.05
9.1
13.2
16.6
19.7
9.0
13.0
16.2
19.4
23.3
Nominal
dimensions
Flare cutting dimensions
Outside
diameter
Dimension A
( )
+0
-0.4
(mm)
R410A R22 1/4” 3/8” 1/2” 5/8” 3/4”
6.35
9.52
12.70
15.88
19.05
17.0
22.0
26.0
29.0
17.0
22.0
24.0
27.0
36.0
Nominal
dimensions
Flare nut dimensions
Outside
diameter
Dimension B
(mm)
R410A
w
w36.0mm for
indoor unit of RP4, 5 and 6
R22
Gauge manifold Charge hose Gas leak detector
Refrigerant recovery equipment Refrigerant cylinder Applied oil
Safety charger
Charge valve Vacuum pump
Flare tool
Bender Pipe cutter Welder and nitrogen gas cylinder Refrigerant charging scale
Vacuum gauge or thermis­tor vacuum gauge and vacuum valve Charging cylinder
Air purge and refrigerant charge Operation check and the two above Gas leak check Collection of refrigerant Refrigerant charge Apply to flared section
Prevent compressor malfunction when charging refrigerant by
spraying liquid refrigerant Prevent gas from blowing out
when detaching charge hose Vacuum drying and air purge
Flaring work of piping
Bend the pipes Cut the pipes Weld the pipes Charge refrigerant Check the degree of vacuum. (Vacuum
valve prevents back flow of oil and refri­gerant to thermistor vacuum gauge) Charge refrigerant
Tool exclusive for R410A Tool exclusive for R410A Tool for HFC refrigerant Tool exclusive for R410A Tool exclusive for R410A Ester oil and alkylbenzene oil (minimum amount) Tool exclusive for R410A
Tool exclusive for R410A Tools for other refrigerants can
be used if equipped with adop­ter for reverse flow check Tools for other refrigerants
can be used by adjusting flaring dimension Tools for other refrigerants can be used Tools for other refrigerants can be used Tools for other refrigerants can be used Tools for other refrigerants can be used Tools for other refrigerants can be used
Tool exclusive for R410A
Tools and materials Use R410A tools Can R22 tools be used?
(Usable if equipped
with adopter for rever­ se flow)
(Usable by adjusting flaring dimension)
Can R407C tools be used?
Ester oil: Alkylbenzene oil: minimum amount
(Usable if equipped
with adopter for rever­ se flow)
(Usable by adjusting
flaring dimension)
: Prepare a new tool. (Use the new tool as the tool exclusive for R410A.) : Tools for other refrigerants can be used under certain conditions. : Tools for other refrigerants can be used.
New refrigerant R410A is adopted for replacement inverter series. Although the refrigerant piping work for R410Ais same as for R22, exclusive tools are necessary so as not to mix with different kind of refrigerant. Furthermore as the working pressure of R410A is 1.6 time higher than that of R22, their sizes of flared sections and flare nuts are different.
1Thickness of pipes
Because the working pressure of R410A is higher compared to R22, be sure to use refrigerant piping with thickness shown below. (Never use pipes of 0.7mm or below.)
2Dimensions of flare cutting and flare nut
The component molecules in HFC refrigerant are smaller compared to conventional refrigerants. In addition to that, R410A is a refrigerant, which has higher risk of leakage because of its working pressure higher than that of other refriger­ants. Therefore, to enhance airtightness and intensity, flare cutting dimension of copper pipe for R410A have been speci­fied separately from the dimensions for other refrigerants as shown below. The dimension B of flare nut for R410A also have partly been changed to increase intensity as shown below. Set copper pipe correctly referring to copper pipe flaring dimensions for R410A below. For 1/2” and 5/8”, the dimension B changes.
Use torque wrench corresponding to each dimension.
Dimension A
3Tools for R410A (The following table shows whether conventional tools can be used or not.)
5
Dimension B
Page 6
2 COMBINATION OF INDOOR AND OUTDOOR UNITS
2-1. 1:1 SYSTEM
Outdoor unit
Indoor unit
PEH-RP·MYA
2-2. SYNCHRONIZED TWIN, TRIPLE AND QUADRUPLE SYSTEM
(1) Synchronized twin (50:50) (2) Synchronized triple (33:33:33)
Indoor unit
PLA-RP4AA 2 PLA-RP5AA 2 PEAD-RP4EA 2 PEAD-RP5EA 2 PEAD-RP4GA 2 PKA-RP4FAL 2 PCA-RP4GA 2 PCA-RP5GA 2
PUHZ-RP·YHA
810
Outdoor unit
PUHZ-RP·YHA
810
Indoor unit
PLA-RP2.5AA 3 PLA-RP3AA 3 PEAD-RP2.5EA 3 PEAD-RP3EA 3 PEAD-RP2.5GA 3 PEAD-RP3GA 3 PKA-RP2.5FAL 3 PKA-RP3FAL 3 PCA-RP2.5GA 3 PCA-RP3GA 3
Outdoor unit
PUHZ-RP·YHA
810
(3) Synchronized quadruple (25:25:25:25)
Outdoor unit
Indoor unit
PLA-RP2AA 4 PLA-RP2.5AA 4 PEAD-RP2EA 4 PEAD-RP2.5EA 4 PEAD-RP2.5GA 4 PKA-RP2GAL 4 PKA-RP2.5FAL 4 PCA-RP2GA 4 PCA-RP2.5GA 4
PUHZ-RP·YHA
810
2-3. MULTI DISTRIBUTION PIPE (OPTION)
Ratio of distributing Part No. Synchronized twin 50:50 MSDD-50WR-E Synchronized triple 33:33:33 MSDT-111R-E Synchronized quadruple 25:25:25:25 MSDF-1111R-E
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3 FEATURES
PUHZ-RP8YHA PUHZ-RP10YHA
CHARGELESS SYSTEM PRE-CHARGED REFRIGERANT IS SUPPLIED FOR PIPING LENGTH AT SHIPMENT. (Max.30m)
The refrigerant circuit with LEV(Linear Expansion Valve) and accumulator always control the optimal refrigerant level regardless of the length (30m max. and 5m min.) of piping. The additional refrigerant charging work during installation often causes problems. Heretofore it is completely eliminated. This unique system improves the quality and reliability of the work done.It also helps to speed up the installation time.
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4 SPECIFICATIONS
Service Ref.
Function Capacity Total input
Power supply (phase, cycle, voltage)
External finish Refrigerant control Compressor
Crankcase heater Heat exchanger Fan Fan(drive) o No.
Defrost method
OUTDOOR UNIT
Noise level Dimensions
Weight Refrigerant
Pipe size O.D. Connection method Between the indoor &
outdoor unit
REFRIGERANT PIPING
Running current
Model Motor output Starter type Protection devices
Fan motor output Airflow
Charge Oil (Model)
/min(CFM
K
Cooling Heating
W
D H
Liquid
Gas Indoor side Outdoor side Height difference Piping length
mm(in.) mm(in.) mm(in.)
kg(lbs)
kg(lbs)
mm(in.) mm(in.)
Btu/h
kW kW
A
kW
W
kW
dB dB
L
Cooling
64,800
19.0(10.0~22.4)
)
6.76
10.0
Heating
76,400
22.4(10.0~25.0)
6.98
3-ph, 50Hz, 380-400-415V (4wires)
10.4 Munsell 3Y 7.8/1.1
Linear Expansion Valve
Hermetic
ANV47FFBMT
4.5 Line start
HP switch, LP switch, Discharge thermo
Plate fin coil
Propeller fan o 1
0.635
150(5,300)
Reverse cycle 55 56
900(35-7/16)
750(29-17/32)
1,798(70-25/32)
198(436)
R410A
10.5(23.1)
2.30(MEL56)
9.52(3/8)
25.4(1) Flared
Flared & Brazing
Max. 40m Max. 80m
Cooling
75,000
22.0(12.5~28.0)
7.83
11.5
PUHZ-RP10YHAPUHZ-RP8YHA
Heating
92,100
27.0(15.7~31.5)
8.41
12.4
5.5
58 58
12.7(1/2)
28.58(1-1/8)
Notes1.Rating Conditions (ISO T1)
Cooling :Indoor : D.B. 27˚C(80˚F), W.B. 19˚C(66˚F) Outdoor : D.B. 35˚C(95˚F), W.B. 24˚C(75˚F) Heating :Indoor : D.B. 20˚C(68˚F) Outdoor : D.B. 7˚C(45˚F), W.B. 6˚C(43˚F) Refrigerant piping length (one way) : 5m (16ft)
2. Guaranteed operating range Indoor
Cooling
Heating
3. Guaranteed voltage
342~457V, 50Hz
4. Above data based on indicated voltage
5. Refer to the service manual of indoor unit for the indoor unit's specifications.
6. The total input is of twin combination of 4-way cassette.
Upper limit Lower limit Upper limit Lower limit
Indoor Unit 1 phase 230V 50Hz Outdoor Unit 3 phase 400V 50Hz
D.B. 35˚C, W.B. 22.5˚C
D.B. 19˚C, W.B. 15˚C
D.B. 28˚C D.B. 17˚C
Outdoor
D.B. 46˚C
D.B. -5˚C D.B. 21˚C, W.B. 15˚C D.B. -20˚C, W.B. -20˚C
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5 DATA
5-1. ELECTRICAL PARTS SPECIFICATIONS
Outdoor unit
Parts name
FUSE
(FUSE1,2)
FUSE
(FUSE3,4)
Solenoid Valve
(Four-way Valve)
Solenoid Valve Coil
(Four-way Valve)
21S4
Linear Expansion
Valve
(LEV-A)
Linear Expansion
Valve Coil
(LEV-A)
Solenoid Valve
<Bypass Valve>
Solenoid Valve Coil
<Bypass Valve>
(SV)
Reactor
(DCL)
High Pressure
Switch
(63H)
Low Pressure
Switch
(63L)
Fan Motor
(MF)
Thermistor
(Outdoor Pipe)
(TH3, TH32 )
Thermistor
(Discharge)
(TH4)
Thermistor
(Outdoor2-PhasePipe)
(TH6)
Thermistor
(Outdoor)
(TH7)
Terminal Block
(Power Supply)
(TB1)
Terminal Block
(Indoor / Outdoor)
(TB2)
Main Smoothing Capacitor
(CB1, CB2)
Rush Current
Protect Resister
(RS)
PUHZ-RP8YHA
250V 15A
250V 6.3A
VT60100
LB64
(DM50G461)
HAM-BD32
(0~480 Pulse)
DC12V
VF20100
LD2
2.7mH 25A
OFF 3.60+0.2MPa
ON 2.80i0.15MPa
OFF -0.03i0.03MPa ON 0.05i0.04MPa
6P 635W o1
PA6Y635-T
0:/15t, 10:/9.6t, 20:/6.3t, 25:/5.4t, 30:/4.3t, 40:/3.0t
20:/250t, 30:/160t, 40:/104t, 50:/70t, 60:/48t, 70:/34t, 80:/24t, 90:/15t, 100:/13t
0:/15t, 10:/9.6t, 20:/6.3t, 25:/5.4t, 30:/4.3t, 40:/3.0t
0:/15t, 10:/9.6t, 20:/6.3t, 25:/5.4t, 30:/4.3t, 40:/3.0t
5P
(L1, L2, L3, N, )
3P
(S1, S2, S3)
2200= 400V
16" 30W
PUHZ-RP10YHA
Motor Compressor
(MC)
ANV47FFBMT
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5-2. COMPRESSOR TECHNICAL DATA
U-V U-W W-V
Unit
Compressor model
Winding
Resistance
( " )
ANV47FFBMT
(at 20°C)
0.72
0.72
0.72
PUHZ-RP8, 10YHA
1m
1m
MICROPHONE
UNIT
GROUND
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
PUHZ-RP8YHA
COOLING
MODE
HEATING
55.0
SPL(dB)
56.0
LINE
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
PUHZ-RP10YHA
COOLING
MODE
HEATING
58.0
SPL(dB)
58.0
LINE
5-3. NOISE CRITERION CURVES
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6 OUTLINES AND DIMENSIONS
0
0
[
7
O.D
[
28.58
2
O.D
[
25.4
[
25.4
2
Refrigerant GAS PIPE connection (BRAZING)
[
12.7 (1/2F)
[
9.52 (3/8F)
1
10YHA
8YHA
Refrigerant LIQUID PIPE connection (FLARE)
1
AIR INTAKE
AIR FLOW
218
375
65
460
Drain Hole(4-[10)
Drain Hole
80
Piping Hole (Knock-OUT)
Indoor/Outdoor Wiring
Power supply Wiring (Earth wiring)
Wiring Hole([ 40 Knock-OUT)
Wiring Hole([ 27 Knock-OUT)
200
94
42 48
(Rear Side)
Service panel
Wiring Hole([ 27 Knock-OUT)
Wiring Hole([ 40 Knock-OUT)
110
Piping Hole([ 122 Knock-OUT)
2
70
150
1
Piping Hole([ 122 Knock-OUT)
Wiring Hole([ 40 Knock-OUT)
200
4350364
(780)
(22)
12
28
60
180
65
140
70
120
317
80
123 105
63
161
90
R
15
R
15
900
700~796
560
750
736
900 750
1798
1519
1457
667
0
98
48
152
40
38
191
195821
380
60
780
736
Wiring Hole([ 27 Knock-OUT)
(Front Side)
Service panel
G
L
FOUNDATION BOLTS PITCH & DRAIN HOLES
Front side
Wiring Hole([40 Knock-OUT)
Wiring Hole([27 Knock-OUT)
MITSUBISHI
ELECTRIC
PUHZ-RP8YHA PUHZ-RP10YHA
Unit : mm
11
Page 12
7 WIRING DIAGRAM
PUHZ-RP8YHA PUHZ-RP10YHA
12
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8 WIRING SPECIFICATIONS
WIRING SPECIFICATIONS FOR 220V-240V 50Hz (INDOOR - OUTDOOR CONNECTING CABLE)
The cable shall not be lighter than design 245 IEC or 227 IEC. When cable length is 30m or more.
Use one cable for S1 and S2 and another for S3 as shown in the picture.
wire size : cable length 50m : 4mm cable length 80m : 6mm
2 2
S1
S2
S3
The cable length may vary depending on the condition of installation, humidity or materials, etc.
Cross section
of cable
Wire size
2
)
(mm
Number of wires
Polarity L(m) 5
Round
2.5
3
Clockwise : S1-S2-S3
Flat
2.5
3
Not applicable (Because center wire has no cover finish)
applicable
Flat
1.5
4
From left to right : S1-Open-S2-S3
Round
2.5
4
Clockwise : S1-S2-S3-Open Connect S1 and S3 to the opposite angle
(30)
1
Not
2
(18)
3
30
4
1 : In case that cable with stripe of yellow and green is available.2 : In the flat cables are connected as this picture, they can be used up to 30m.
(3C Flat cable 2)
S1 S2 S3
3 : In case of regular polarity connection (S1-S2-S3), wire size is 1.5mm2. ✽4 : In case of regular polarity connection (S1-S2-S3).5 : Mentioned cable length is just a reference value.
It may be different depending on the condition of installation, humidity or materials, etc.
Be sure to connect the indoor-outdoor connecting cables directly to the units (no intermediate connections). Intermediate connections can lead to communication errors if water enters the cables and causes insufficient insulation to ground or a poor electrical contact at the intermediate connection point. (If an intermediate connection is necessary, be sure to take measures to prevent water from entering the cables.)
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9
Outdoor unit Power supply
Phase Frequency & Voltage
Outdoor unit (A)
Wire No.
32
4
32
4
Models (Outdoor unit)
3N~(3ph 4wires)
50Hz, 380-400-415V
Outdoor unit Power supply Input capacity Main switch/Breaker
Indoor unit/Outdoor unit connecting Wire No. o size (e) Remote controller-indoor unit connecting Wire No. o size (e)
Control circuit rating
Wiring
Cable 2C o 0.69
This wire is accessory of remote controller
(Wire length: 10m, Non-polar)
Indoor unit-Outdoor unit: S1-S2 AC220V-230V-240V
S2-S3 DC24V
Remote controller-Indoor unit: DC14V
RP8 RP10
Cable length 50 m : 3 o 4 (Polar) Cable length 80 m : 3 o 6 (Polar)
1 2
S1 S2 S3
S1 S2 S3
Indoor/outdoor unit connection cable
Indoor unit
Unit power supply
Outdoor unit
Remote controller
L1 L2 L3 N
Grounding
L1 L2 L3 N
1 2
1 2
S1
Indoor unit
S2 S3
S1 S2 S3
S1 S2 S3
Unit power supply
Indoor/outdoor unit connection cable
Indoor unit
Outdoor unit
Remote controller
Grounding
1 2
1 2
1 2
S1 S2 S3
S1 S2 S3
S1 S2 S3
S1 S2 S3
Indoor/outdoor connection cable
Indoor unit
Unit power supply
Indoor unit
Indoor unit
Outdoor unit
Remote controller
L1
L2 L3 N
Grounding
1 2
1 2
S1 S2 S3
S1 S2 S3
S1 S2 S3
1 2
S1 S2 S3
1 2
S1 S2 S3
Indoor/outdoor connection cable
Indoor unit
Unit power supply
Indoor unit
Indoor unit
Outdoor unit
Remote controller
L1 L2 L3 N
Grounding
Indoor unit
SPECIFICATIONS FOR ELECTRICAL WORK
9-1. FIELD ELECTRICAL WIRING (POWER WIRING SPECIFICATIONS) PUHZ-RP•YHA
Check items
1. Wiring size must comply with the applicable local and national code.
2. Be careful about choosing the installation location for the earth leakage breaker and how it is installed as the initial electric current may cause it to malfunction.
3. Power supply cords and indoor unit / Outdoor unit connecting cords shall not be lighter than polychloroprene sheathed flex-
ible cord. (design 254 IEC 57)
1:1 system Synchronized twin, triple and quadruple system
Electrical wiring
• Synchronized twin
• Synchronized triple
• Synchronized quadruple
14
Page 15
9-2. M-NET WIRING METHOD
Group remote controller
Refrigerant address 00
M-NET address 01
A-control remote controller
A-control remote controller
A-control remote controller
Refrigerant address 00
M-NET address 02
Refrigerant address 00
M-NET address 03
Power supply unit for transmission wire
Central remote controller
M-NET transmission wire
Bad example (Multi spot grounding of shield wire)
Good example 1 (Single spot grounding of shield wire)
Power supply appliance
M-NET type outdoor unit
Central remote controller
Power supply appliance
M-NET type outdoor unit
M-NET type outdoor unit
M-NET type outdoor unit
M-NET transmission wire
M-NET type outdoor unit
M-NET type outdoor unit
Central remote controller
Power supply appliance
M-NET type outdoor unit
M-NET transmission wire
M-NET type outdoor unit
M-NET type outdoor unit
Good example 2 (Single spot grounding of shield wire)
(Points to notice) (1) Outside the unit, transmission wires should stay away from electric wires in order to prevent electromagnetic noise from
making an influence on the signal communication. Place them at intervals of more than 5cm. Do not put them in the same conduit tube.
(2) Terminal block (TB7) for transmission wires should never be connected to 220~240V power supply. If it is connected,
electronic parts on M-NET p.c. board may be burn out.
(3) Use 2-core x 1.25mm2shield wire (CVVS, CPEVS) for the transmission wire. Transmission signals may not be sent or
received normally if different types of transmission wires are put together in the same multi-conductor cable. Never do this because this may cause a malfunction.
It would be ok if M-NET wire (non-polar, 2-cores) is arranged in addition to the wiring for A-control.
(4) Ground only one of any appliances through M-NET transmission wire (shield wire). Communication error may occur due to
the influence of electromagnetic noise.
If there are more than two grounding spots on the shield wire, noise may enter into the shield wire because the ground
wire and shield wire form one circuit and the electric potential difference occurs due to the impedance difference among grounding spots. In case of single spot grounding, noise does not enter into the shield wire because the ground wire and shield wire do not form one circuit.
To avoid communication errors caused by noise, make sure to observe the single spot grounding method described in the
installation manual.
“Ed” error will appear on the LED display of outdoor unit. “0403” error will appear on the central-control remote controller.
15
Page 16
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
0
12
~
50
M-NET Address No.
<Setting example>
Switng setting
SW11 ones digit
SW12 tens digit
OFF
ON
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
0
Refrigrant address
OFF
ON
8
OFF
ON
1
OFF
ON
9
OFF
ON
10
OFF
ON
11
OFF
ON
12
OFF
ON
13
OFF
ON
14
OFF
ON
15
OFF
ON
2
OFF
ON
3
OFF
ON
4
OFF
ON
5
OFF
ON
6
OFF
ON
7
System controller
A-control remote controller
Group A Group B Group C
A-control remote controller
TB5
A-control remote controller
Refrigerant address 00
M-NET address 01
Refrigerant address 00
M-NET address 02
Refrigerant address 01
M-NET address 03
Refrigerant address 00
M-NET address 04
Power supply unit for transmission wire
A-control remote controller
A-control remote controller
TB5
Group A Group B
Refrigerant address 00
M-NET address 01
Refrigerant address 01
M-NET address 02
Refrigerant address 00
M-NET address 04
Refrigerant address 01
M-NET address 03
Refrigerant address 02
M-NET address 05
System controller
Power supply unit for transmission wire
M-NET wiring
(1) Use 2-core x 1.25mm
2
shield wire for electric wires.
(Excluding the case connecting to system controller.)
(2) Connect the wire to the M-NET terminal block.Connect one core of the
transmission wire (non-polar) to Aterminal and the other to B. Peel the shield wire, twist the shield part to a string and connect it to S terminal.
(3) In the system which several outdoor units are being connected, the terminal
(A, B, S) on M-NET terminal block should be individually wired to the other
M-NET terminal block
ABS
Transmission
wire
Ground wire
Shield part
outdoor unit’s terminal, i.e. Ato A, B to B and S to S.In this case, choose one of those outdoor units and drive a screw to fix an ground wire on the plate as shown on the right figure.
9-2-1. M-NET address setting
In A-control models, M-NET address and refrigerant address should be set only for the outdoor unit. Similar to Free Combo system, there is no need to set the address of outdoor unit and remote controller. To construct a central control system, the setting of M-NET address should be conducted only upon the outdoor unit. The setting range should be 1 to 50 (the same as that of the indoor unit in Free Combo system), and the address number should be consecutively set in a same group.
Address number can be set by using rotary switches (SW11 for ones digit and SW12 for tens digit), which is located on the M-NET p.c. board of outdoor unit. (Factory setting: all addresses are set to “0”.)
9-2-2. Refrigerant address setting
In case of multiple grouping system (multiple refrigerant circuits in one group), indoor units should be connected by remote controller wiring (TB5) and the refrigerant address needs to be set. Leave the refrigerant addresses to “00” if the group set­ting is not conducted. Set the refrigerant address by using DIP SW1-3 to -6 on the outdoor controller circuit board. [Factory setting: all switches are OFF. (All refrigerant addresses are “00”.)]
9-2-3. Regulations in address settings
In case of multiple grouping system, M-NET and refrigerant address settings should be done as explained in the above section. Set the lowest number in the group for the outdoor unit whose refrigerant address is “00” as its M-NET address.
w Refrigerant addresses can be overlapped if they are in the different group.
w In group B, M-NET address of the outdoor unit whose refrigerant address is “00” is not set to the minimum in the group. As
“3” is right for this situation, the setting is wrong. Taking group A as a good sample, set the minimum M-NET address in the group for the outdoor unit whose refrigerant address is “00”.
16
Page 17
10 REFRIGERANT SYSTEM DIAGRAM
Strainer
#50
Strainer
#50
Strainer
#100
Strainer
#100
Strainer
#100
Strainer
#100
Oil
separator
Strainer
#100
Stop valve
(with service port)
Stop valve
(with service port)
Charge plug
(Low pressure)
Accumulator
Oil-back hole
Strainer#40
Linear expansion valve
Low pressure switch 63L
Compressor
Capillary tube1
Capillary tube2
Replace
filter
High pressure switch 63H
Bypass valve
Charge plug
(High pressure)
Thermistor TH4
(Discharge)
Thermistor TH6
(Outdoor 2-phase pipe)
Thermistor TH7
(Outdoor)
Thermistor TH3
(Outdoor pipe)
Thermistor TH32 (Outdoor pipe)
Heat exchanger
4-way valve
Refrigerant GAS pipe connection (RP8:1, RP10:1-1/8)
Refrigerant LIQUID pipe connection (RP8:3/8F, RP10:1/2F)
Refrigerant flow in cooling Refrigerant flow in heating
PUHZ-RP8YHA PUHZ-RP10YHA
17
Page 18
11 CAPACITY CURVES
Cooling capacity
1.4
Indoor intake air wet-bulb temperature <W.B. :>
1.2
1
0.8
Cooling capacity ratio
0.6
-5 0 5 10 15 20 25 30 35 40 46
1.2
1.0
0.8
22 20
18
0.6
Cooling input ratio
16
0.4
Cooling input
-5 0 5 10 15 20 25 30 35 40 46
Outdoor intake air dry-bulb temperature <D.B. :>
Heating capacity Heating input
Indoor intake air dry-bulb temperature <D.B. :>
Indoor intake air wet-bulb temperature <W.B. :>
Outdoor intake air dry-bulb temperature <D.B. :>
Indoor intake air dry-bulb temperature <D.B. :>
22
20
18 16
Outdoor intake air wet-bulb temperature <W.B. :> Outdoor intake air wet-bulb temperature <W.B. :>
Note : These diagrams show the case where the operation frequency of a compressor is fixed.
18
Page 19
12 APPLICABLE EXTENSION PIPE FOR EACH MODEL
70m
[30m]
SW
SW : When the outdoor unit is located lower than
the indoor unit, set DIP SW8-1 on the outdoor unit controller board to ON.
RP8
RP10
Liquid
pipe
(mm)
OD
Thick-
ness
OD
Thick-
ness
gas
pipe
(mm)
[
19.05 t1.0
20m
[20m]
20m
[20m]
[
22.2
t1.0
50m
[30m]
50m
[30m]
[
25.4
t1.0
Normal piping
70mw1
[30m]
70m
[30m]
[
28.58 t1.0
SW
70m
[30m]
70m
[30m]
[
19.05 t1.0
20m
[20m]
20m
[20m]
[
22.2
t1.0
50m
[30m]
50m
[30m]
[
25.4
t1.0
70m
[30m]
70m
[30m]
[
28.58 t1.0
SW
70m
[30m]
Normal piping
70mw1
[30m]
[
28.58 t1.0
SW
50m
[20m]
50m
[20m]
[
31.75 t1.0
w
2
SW
50m
[20m]
w
2
50m
[20m]
[
25.4
t1.0
50m
[20m]
50m
[20m]
[
22.2
t1.0
50m
[20m]
50m
[20m]
Note : The maximum pipe length is 80m in case of new piping.
w1 Be sure to use hard (tempered) one for pipe over [22.2.(Do not use soft (annealed) one.) w2 When using [31.75 pipe, the outdoor temperature range (dry-bulb temperature) for heating operation is -11 to +21:.
<Table 1> Maximum pipe length (RP8·RP10)
<
Marks in the table above
>
[
9.52
t0.8
[
12.7
t0.8
[
15.88 t1.0
The maximum pipe length Charge-less pipe length
: It can be used. : Cooling capacity is lowered. Refer to <Table6> : Additional refrigerant charge is required when the pipe length exceeds 20m. Refer to <Table7>
Amount of additional refrigerant charge (kg)
30 m and less 31-40 m and less 41-50 m and less 51-60 m and less 61-70 m and less 71-80 m and less
0.9 kg 1.8 kg 2.7 kg 3.6 kg
1.2 kg 2.4 kg 3.6 kg 4.8 kg
Outdoor unit
permitted pipe length
RP8
RP10
80m or less
At time of shipping
(kg)
10.5
10.5
No additional
charge necessary
The additional charge amount is obtained by the following formula.
Main piping: Liquid line size [9.52 overall length [m]
o
0.09
[kg/m]
Branch piping: Liquid line size [9.52 overall length [m] o 0.06 [kg/m]
Branch piping: Liquid line size [6.35 overall length [m] o 0.02 [kg/m]
3.6 (kg)
Amount of additional charge [kg]
Main piping: Liquid line size [12.7 over all length [m] o 0.12 [kg/m]
=
Additional charge amount for 70 m
RP8 3.6 kg
RP10 4.8 kg
+
+
+
Calculate the additional charge amount based on the following procedure. If the calculation results in an amount that is smaller than the "Additional charge amount for 70m," perform the additional charge using the amount shown in "Additional charge amount for 70m."
12-1. 1:1 SYSTEM
(1) Pipe length
(2) Adjusting the amount of refrigerant
Check additional refrigerant charging amount referring to table 7 when the liquid pipe diameter is larger than the standard size, and table 2 when the pipe of the standard diameter is used.
<Table 2>
19
Page 20
(3) Capacity correction
70
75
80
85
90
95
100
5 10152025303540455055606570758085
Corrected pipe length (m)
Capacity ratio [%]
RP8·10
Heating RP8·10
70
75
80
85
90
95
100
510152025303540455055
Corrected pipe length [m]
Capacity ratio [%]
Heating RP8([22.2), RP10([25.4)
Cooling RP8([22.2)
Cooling RP10([25.4)
70
75
80
85
90
95
100
510152025
Corrected pipe length [m]
Cpacity ratio [%]
Cooling RP10([22.2)
Cooling RP8([19.05)
Heating RP8([19.05), RP10([22.2)
Cooling and heating capacity is lowered according to the piping length. Capacity can be obtained by referring to the following capacity curves. When the diameter of the gas pipe is smaller than the standard size, cooling capacity is lowered comparing to the operation using the standard diameter pipe. The lowered capacity can be obtained by referring to the capacity curves for gas pipe which is one or two size smaller than standard size. Corrected pipe length (m) = actual pipe length (m) + number of bends o 0.3 (m)
1. Capacity curves 1 <Standard size>
2. Capacity curves 2 <When the gas pipe's diameter is one-size-smaller than the standard
3. Capacity curves 3 <When the gas pipe's diameter is two-size-smaller than the standard
20
Page 21
12-2. SYNCHRONIZED TWIN, TRIPLE AND QUADRUPLE SYSTEM
(1) Synchronized twin
Maximum pipe length (Main pipe[A]+Branch pipe diameter [ B and C ])
Main pipe
(mm)[A]
Branch
pipe [mm] [B, C]
w1 The maximum pipe length is 80m in case of new pipping. w2 When using [31.75 pipe, the outdoor temperature range (dry-bulb temperature) for heating operation is -11 to +21:.
Liquid pipe
Gas pipe
Liquid pipe
Gas pipe
Liquid pipe
Gas pipe
Liquid pipe
Gas pipe
Liquid pipe
Gas pipe
[6.35 [12.7 [9.52
[15.88
[9.52
[19.05
[12.7
[19.05
(2) Synchronized triple
Maximum pipe length (Main pipe [A] + Branch pipe [ B, C and D ])
Main pipe
(mm)[A]
Branch
pipe [mm]
[B, C, D]
w1 The maximum pipe length is 80m in case of new pipping. w2 When using [31.75 pipe, the outdoor temperature range (dry-bulb temperature) for heating operation is -11 to +21:.
Liquid pipe
Gas pipe
Liquid pipe
Gas pipe
Liquid pipe
Gas pipe
Liquid pipe
Gas pipe
Liquid pipe
Gas pipe
[6.35 [12.7 [9.52
[15.88
[9.52
[19.05
[12.7
[19.05
[9.52
[19.05 [22.2 [25.4 [28.58 [19.05 [22.2 [25.4 [28.58 [22.2 [25.4 [28.58 [31.75 [19.05 [22.2 [25.4 [28.58 [19.05 [22.2 [25.4 [28.58 [22.2 [25.4 [28.58 [31.75
Normal
sw
piping
[9.52
70mw1
[30m]
70m
[30m]
70m
[30m]
Normal
piping
70mw1
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
sw
sw
sw
sw
sw
50m
20m
[30m]
[20m]
20m
50m
[20m]
[30m]
20m
50m
[20m]
[30m]
[19.05 [22.2 [25.4 [28.58 [19.05 [22.2 [25.4 [28.58 [22.2 [25.4 [28.58 [31.75 [19.05 [22.2 [25.4 [28.58 [19.05 [22.2 [25.4 [28.58 [22.2 [25.4 [28.58 [31.75
20m
50m
[20m]
[30m]
20m
50m
[20m]
[30m]
20m
50m
[20m]
[30m]
[12.7 [15.88 [9.52 [12.7 [15.88
sw
20m
[20m]
20m
[20m]
20m
[20m]
20m
[20m]
20m
[20m]
20m
[20m]
50m
[30m]
50m
[30m]
50m
[30m]
50m
[30m]
50m
[30m]
50m
[30m]
70m
70m
[30m]
70m
[30m]
70m
[30m]
[12.7 [15.88 [9.52 [12.7 [15.88
70m
[30m]
70m
[30m]
70m
[30m]
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
50m
50m
[20m]
[20m]
sw
50m
50m
[20m]
[20m]
sw
50m
50m
[20m]
[20m]
sw
50m
50m
[20m]
[20m]
sw
50m
50m
[20m]
[20m]
sw
50m
50m
[20m]
[20m]
50m
[20m]
50m
[20m]
50m
[20m]
50m
[20m]
50m
[20m]
50m
[20m]
sw
sw
w2
50m
20m
[20m]
w2
sw
50m
[20m]
w2
sw
50m
[20m]
sw
w2
50m
[20m]
w2
sw
50m
[20m]
w2
sw
50m
[20m]
50m
[20m]
[30m]
sw
20m
50m
[20m]
[30m]
sw
20m
50m
[20m]
[30m]
sw
20m
50m
[20m]
[30m]
sw
20m
50m
[20m]
[30m]
sw
20m
50m
[20m]
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
20m
[20m]
20m
[20m]
20m
[20m]
20m
[20m]
20m
[20m]
20m
[20m]
RP10 twin (RP52)RP8 twin (RP42)
Normal
70m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
piping
70mw1
[30m]
70m
[30m]
70m
[30m]
Normal
piping
70mw1
[30m]
70m
[30m]
70m
[30m]
50m
[20m]
50m
[20m]
50m
[20m]
50m
[20m]
50m
[20m]
50m
[20m]
50m
[20m]
50m
[20m]
50m
[20m]
50m
[20m]
50m
[20m]
50m
[20m]
50m
[30m]
50m
[30m]
50m
[30m]
RP10 triple (RP33)RP8 triple (RP2.53)
50m
[30m]
50m
[30m]
50m
[30m]
50m
[20m]
50m
[20m]
50m
[20m]
50m
[20m]
50m
[20m]
50m
[20m]
w2
50m
[20m] w2
50m
[20m] w2
50m
[20m]
w2
50m
[20m] w2
50m
[20m] w2
50m
[20m]
(3) Synchronized quadruple
Maximum pipe length (Main pipe[A]+Branch pipe [ B, C, D and E ])
Main pipe
(mm)[A]
Branch
pipe [mm]
[B, C, D, E]
w1 The maximum pipe length is 80m in case of new pipping. w2 When using [31.75 pipe, the outdoor temperature range (dry-bulb temperature) for heating operation is -11 to +21:.
<
Liquid pipe
Gas pipe
Liquid pipe
Gas pipe
Liquid pipe
Gas pipe
Liquid pipe
Gas pipe
Liquid pipe
Gas pipe
Marks in the table above
[19.05 [22.2 [25.4 [28.58 [19.05 [22.2 [25.4 [28.58 [22.2 [25.4 [28.58 [31.75 [19.05 [22.2 [25.4 [28.58 [19.05 [22.2 [25.4 [28.58 [22.2 [25.4 [28.58 [31.75
[6.35
20m
[12.7
[20m]
[9.52
20m
[15.88
[20m]
[9.52
20m
[20m]
[19.05
[12.7
[19.05
>
SW : When the outdoor unit is located lower than
SW
70m
[30m]
: It can be used. : Cooling capacity is lowered. Refer to <Table6> : Additional refrigerant charge is required when the pipe length exceeds 20m. Refer to <Table7>
The maximum pipe length Charge-less pipe length
[9.52
Normal
sw
piping
70mw1
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
sw
sw
50m
[30m]
50m
[30m]
50m
[30m]
the indoor unit, set DIP SW8-1 on the outdoor unit controller board to ON.
[12.7 [15.88 [9.52 [12.7 [15.88
20m
[20m]
20m
[20m]
20m
[20m]
50m
[30m]
50m
[30m]
50m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
sw
sw
sw
50m
50m
[20m]
[20m]
sw
50m
50m
[20m]
[20m]
sw
50m
50m
[20m]
[20m]
50m
[20m]
50m
[20m]
50m
[20m]
w2
50m
[20m]
sw
w2
sw
20m
50m
[20m]
[20m]
sw
w2
sw
50m
20m
[20m]
[20m]
20m
[20m]
50m
[30m]
50m
[30m]
50m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
RP10 quadruple (RP2.54)RP8 quadruple (RP24)
20m
[20m]
20m
[20m]
20m
[20m]
50m
[30m]
50m
[30m]
50m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
Normal
piping
70mw1
[30m]
70m
[30m]
70m
[30m]
50m
[20m]
50m
[20m]
50m
[20m]
50m
[20m]
50m
[20m]
50m
[20m]
50m
[20m]
50m
[20m]
50m
[20m]
w2
50m
[20m] w2
50m
[20m] w2
50m
[20m]
21
Page 22
Pipe diameter and thickness
OD
[6.35
(mm)
Thickness
(mm)
Be sure to use hard (tempered) one for pipe over [22.2.(Do not use soft (annealed) one.)
[9.52 [12.7 [
0.8
0.8 0.8 1.0 1.0 1.0 1.0 1.0
15.88[19.05
[22.2 [25.4 [
28.58
[
31.75
1.1
1
1
44
B C
2
4
D
1
4
E
1
1 Indoor unit 2
Outdoor unit
3
Main piping
4
Branch piping
5
Multi disttibution pipe (option)
1
5
3
2
A
<Table 6> Lowered cooling capacity by the smaller gas pipe diameter
Pipe length
5m and less
6~10m 11~20m 21~30m 31~40m 41~50m
gas pipe [22.2 gas pipe [19.05
100%
100~96%
96~91% 91~86% 86~83% 83~80%
100%
100~91%
91~81%
Height difference (Indoor unit-
1
Outdoor unit) Max. 40 m Height difference (Indoor unit-
2
Indoor unit) Max. 1 m
Distance between indoor and indoor units
3
pipe length.
B—C B—D B—E C—D C—E D—E
Number of pipe bends
4
Within 15 points8 points between main pipe A and each branch pipe (B, C, D, E).
RP10 Cooling capacity ratioRP8 Cooling capacity ratio
gas pipe [25.4 gas pipe [22.2
100%
100~98%
98~94% 94~91% 91~88% 88~86%
100%
100~95%
95~88%
<Table 7> Additional refrigerant amount when the liquid pipe of the larger diameter is used.
(Single /Simultaneous Twin / Simultaneous Triple / Simultaneous Quadruple)
When the extension pipe length (main piping + branch piping) exceeds 20mCapacity
RP8, RP10
L1 : [15.88 liquid pipe (m) L2 : [12.7 liquid pipe (m) L3 : [9.52 liquid pipe (m) L4 : [6.35 liquid pipe (m)
If the calculation produces a negative number (i.e. a "minus" charge), additional charging is not necessary. ( W [ 0)
Additional refrigerant amount W(g)=(180oL1)+(120oL2) (90oL3)+(30oL4)-3000
<Table 8>
Permissible total A+B or A+C Charge-less
Outdoor unit piping length or piping length
A+B+C+D+E A+D or A+E A+B+C+D+E
RP8
PR10
80 m and less 80 m and less 30 m and less
<Table 9>
Outdoor unit
RP8
RP10
B-C or B-D or
B-E or C-D or
C-E or D-E
8 m and less Within 15
Number of pipe bends
22
Page 23
<Table 10>
Outdoor unit
RP8
RP10
permitted pipe length
80m or less
At time of shipping
(kg)
10.5
10.5
30 m and less 31-40 m and less 41-50 m and less 51-60 m and less 61-70 m and less 71-80 m and less
No additional
charge necessary
0.9 kg 1.8 kg 2.7 kg 3.6 kg
1.2 kg 2.4 kg 3.6 kg 4.8 kg
Amount of additional refrigerant charge (kg)
A+B+C+D
The additional charge amount is obtained by the following formula.
When length exceeds 70 m
When the total length of the piping exceeds 70 m, calculate the amount of additional charge based on the following requirements. Note: If the calculation produces a negative number (i.e. a “minus” charge), of if calculation results in an amount that is less than the “Additional charge amount for 70 m,”perform the additional charge using the amount shown in “Additional charge amount for 70 m.”
Amount of additional charge
Additional charge amount for 70 m
Main piping: Liquid line size [12.7 overall length
0.12
RP8 3.6 kg
RP10 4.8 kg
Main piping: Liquid line size
+++
[9.52 overall length
0.09 (Gas line:[28.58)
Branch piping: Liquid line size [9.52 overall length
0.06 (Gas line: [15.88)
Branch piping: Liquid line size [6.35 overall length
0.02 (Gas line: [15.88)
=
3.6 (kg)
1. Perform refrigerant piping connections for the indoor / outdoor unit while the outdoor unit's stopvalve is completely closed (factory setting), and then vacuumize the refrigerant lines through the service port of the outdoor unit.
2. Open the stop valves of the outdoor unit completely.
This will completely connects the refrigerant lines of the indoor and outdoor units.
Handling of the stop valve is shown on the outdoor unit.
Note :
· Apply refrigerating machine oil over the flare seat surface. Do not apply to the threaded portion. (It will cause the flare nut to loosen.)
· Use two wrenches to tighten piping connection.
· Use leak detector or soapy water to check for gas leaks after connections are completed.
· For the insulation of the connection at the indoor side, make sure to use the attached insulation materials and
thoroughly follow the instruction shown in the manual.
· Always use a non-oxidizing brazing material when brazing the pipes.
Adjusting the amount of refrigerant
Check additional refrigerant charging amount referring to the procedure 2 below when the liquid pipe diameter of the main piping Ais larger than the standard size.
1 When the standard diameter pipe is used for the main piping A, calculate the additional refrigerant amount by
referring to <Table 2> as well as the 1:1 system.
2 When the liquid pipe diameter of the main piping A is one size larger than the standard size:
· When the extension pipe length (main piping + branch piping) does not exceeds 20m, adjustment of the
refrigerant is not necessary (charge-less).
· When the extension pipe length (main piping + branch piping) exceeds 20m, charge the amount of refrigerant
that is obtained by the formula shown in <Table 7>. If the calculation produces a negative number (i.e. a "minus" charge), additional charging is not necessary. Note: Apply 0 to L1 to L3 corresponding to the piping that are not used.
Correcting the capacity value
When calculating the lowered capacity by the extension pipe length, use the longest length between the indoor and the outdoor units.
23
Page 24
Refrigerant collecting (pump down)
OFF
12
ON
<SW4>
AB
CD
A Stop C operation B Cooling D Heating
Perform the following procedures to collect the refrigerant when moving the indoor unit or the outdoor unit. 1 Before collecting the refrigerant, first make sure that the all of the SW5 DIP switches
for function changes on the control board of the outdoor unit are set to OFF. If all of the SW5 switches are not set to OFF, record the settings and then set all of the switches to OFF. Start collecting the refrigerant. After moving the unit to a new location and completing the test run, set the SW5 switches to the previously recorded settings.
2
Supply power (circuit breaker).
* When power is supplied, make sure that “CENTRALLY CONTROLLED” is not
displayed on the remote controller. If “CENTRALLY CONTROLLED” is dis­played, the refrigerant collecting (pump down) cannot be completed normally.
3
After the liquid stop valve is closed, set the SWP switch on the control board of the outdoor unit to ON. The compressor (outdoor unit) and ventilators (indoor and outdoor units) start operating and refrigerant collecting operation begins. LED1 and LED2 on the control board of the outdoor unit are lit.
* Set the SWP switch (push-button type) to ON in order to perform refrigerant
collecting operation only when the unit is stopped. However, refrigerant collecting operation cannot be performed until compre­ssor stops even if the unit is stopped. Wait three minutes until compressor is completely stopped and set the SWP switch to ON again.
4 As the unit automatically stops after two or three minutes of refrigerant
collecting operation (LED1 if not lit and LED2 is lit), be sure to quickly close the gas stop valve. If the unit stops while both LED1 and LED2 are lit, open the liquid valve completely, wait three minutes, then repeat the step 3.
* If the refrigerant collecting operation has been completed normally
(LED1 and LED2 are lit), the unit will remain stopped until the power supply is turned off.
5 Turn off the power supply (circuit breaker).
* Note that when the length of the extension piping is long, it may not be
possible to perform a pump-down operation.When performing the pump­down operation, make sure that the low pressure is lowered to near 0 MPa (gauge).
Unit replacement operation
· This model will automatically begin the replacement operation after it has been installed when it enters the initialization phase for normal heating or cooling. Ho w­ever , the unit will not automatically perf orm the replacement operation if it is moved to a new location where it will be used with existing R22 refrigerant piping. Under such conditions, always use the SW8-2 operations to perform the replacement operation before beginning the test operation.
Some models can perform the replacement operation only by SW8-2 operation. Refer to the outdoor unit's Installation Manual for detail.
Replacement operation procedures (When moving the unit and connecting it to existing R22 piping.)
1 Supply power. 2
Set DIP switch SW8-2 on the control board of the outdoor unit to ON to start replacement operation. * The replacement operation is performed using the cooling system. Cool air will
flow from the indoor unit during the replacement operation.
* During the replacement operation,
and LED1 and LED2 on the control board of the outdoor unit flash together.
The duration of the replacement operation is determined by the length of the pip-
3
ing. Alwa ys perform the replacement operation f or longer than the stipulated time. * Always perform one of the following operations at the completion of the re-
placement operation. The replacement operation will end and the unit will auto­matically stop.
TEST RUN
is displayed on the remote controller
(1)Set SW8-2 from ON to OFF. (When ending a replacement operation of less
than 2 hours.)
· Each time SW8-2 is set from OFF to ON, the replacement operation can be started. Always perf orm the replacement operation for longer than the stipu­lated time. Required replacement operation times
Piping Length
0 to 20 meters 30 minutes or more 21 to 30 meters 45 minutes or more 31 to 70 meters 60 minutes or more
(2)The replacement operation will automatically stop after 2 hours. (It will end with
SW8-2 still in the ON position.)
· When the replacement operation has ended automatically after 2 hours of operation, there is no need to set SW8-2 from ON to OFF; normal air con­ditioning operations can bestarted with the SW8-2 being set to ON.Howe­ver, to repeat the replacement operation, SW8-2 will have to be returned to OFF and then set to ON.
* If the indoor temperature is below 15:, the compressor will operate
intermittently but the unit is not faulty.
Replacement
Operation Time
Start and finish of test run
Operation from the indoor unit
Execute the test run using the installation manual for the indoor unit.
Operation from the outdoor unit By using the DIP switch SW4 on the control board of the outdoor unit, test run can be started and finished, and its operation mode (cooling/heating) can be set up.
1Set the operation mode (cooling/heating) using SW4-2. 2Turn on SW4-1 to start test run with the operation mode set by SW4-2. 3Turn off SW4-1 to finish the test run.
There may be a faint knocking sound around the machine room after power is supplied, but this is no problem with product because the linear expansion pipe is just moving to adjust opening pulse.
There may be a knocking sound around the machine room for several seconds after compressor starts operating, but this is no problem with product because the check valve, itself, generates the sound because pressure difference is small in the refrigerant circuit.
Note: The operation mode cannot be changed by SW4-2 during test run. (To change test run mode, stop the unit by SW4-1, change the operation mode and restart the test run by SW4-1.)
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Page 25
13 TROUBLESHOOTING
Unit conditions at service
Error code
Actions to be taken for service (summary)
The inferior phenomenon is reoccurring.
Displayed
Not displayed
Judge what is wrong and take a corrective action according to “13-4. SELF-DIAGNOSIS ACTION TABLE”.
Conduct trouble shooting and ascertain the cause of the inferior phenomenon according to “13-5. TROUBLE­SHOOTING BY INFERIOR PHENOMENA”.
The inferior phenomenon is not reoccurring.
Logged
Not logged
1Consider the temporary defects such as the work of protection devices in the refrigerant circuit including compressor, poor connection of wiring, noise and etc. Re-check the symptom, and check the installation environment, refrigerant amount, weather when the inferior phenomenon occurred, matters related to wiring and etc. 2Reset error code logs and restart the unit after finishing service. 3There is no abnormality concerning of parts such as electrical component, controller board, remote controller and etc.
1Re-check the abnormal symptom. 2Conduct trouble shooting and ascertain the cause of the
inferior phenomenon according to “13-5.
TROUBLE­ SHOOTING BY INFERIOR PHENOMENA”. 3Continue to operate unit for the time being if the cause is not ascertained. 4There is no abnormality concerning of parts such as electrical component, controller circuit board, remote controller and etc.
13-1. TROUBLESHOOTING
<Error code display by self-diagnosis and actions to be taken for service (summary)>
Present and past error codes are logged and displayed on the wired remote controller and control board of outdoor unit. Actions to be taken for service, which depends on whether or not the inferior phenomenon is reoccurring at service, are sum­marized in the table below. Check the contents below before investigating details.
25
Page 26
13-2. CHECK POINT UNDER TEST RUN
PAR-20MAA
ON/OFF
CENTRALLY CONTROLLED
ERROR CODE
CLOCK
ON OFF
˚C
CHECK
CHECK MODE
FILTER
TEST RUN FUNCTION
˚C
1Hr.
NOT AVAILABLE
STAND BY DEFROST
FILTER
CHECK TEST
TEMP.
TIMER SET
TEST RUN button
TEST RUN display
LIQUID PIPE TEMPERATURE display
(MA remote controller)
(1) Before test run
After installation of indoor and outdoor units, piping work and electric wiring work, re-check that there is no refrigerant leak-
age, loosened connections and incorrect polarity.
Measure impedance between the ground and the power supply terminal block(L, N) on the outdoor unit by 500V Merger and check that it is 1.0M" or over.
wDon’t use 500V Merger to indoor/outdoor connecting wire terminal block(S1, S2, S3) and remote controller terminal block
(1, 2). This may cause malfunction.
Make sure that test run switch (SW4) is set to OFF before turning on power supply.
Make sure that all of the SW5 switches for function changes on the control board of the outdoor unit are set to OFF. If all of
the SW5 switches are not set to OFF, record the settings and then set all of the switches to OFF. And perform emergency operation. After finishing emergency operation, set the SW5 switches to the recorded settings.
Turn on power supply twelve hours before test run in order to protect compressor.
For specific models which requires higher ceiling settings or auto-recovery feature from power failure, make proper changes
of settings referring to the description of “Selection of Functions through Remote Controller”.
Make sure to read operation manual before test run. (Especially items to secure safety.)
13-2-1. Test run by remote controller
A
B
Operating procedures
1. Turn on the main power supply.
2. Press TEST button twice.
3. Press OPERATION SWITCH button.
4. Press AIR DIRECTION
5. Check the outdoor unit fan for correct running.
6. Press the ON/OFF button to reset the test run in progress.
7. Turn off the main power supply.
B button.
While the room temperature display on the remote controller is “H0”, the remote controller is disabled. Wait until “H0” disappears before using remote controller. “H0” appears for about 2 minutes after power supply is turned on. w1
The TEST appears on the screen. Cooling mode:
A
Heating mode: Check if warm air blows. (It takes a little while until warm air blows.)
Check for correct motion of auto-vanes. The outdoor unit features automatic capacity control to
provide optimum fan speeds. Therefore, the fan keeps running at a low speed to meet the current outside air condition unless it exceeds its available maximum power. Then, in actuality, the fan may stop or run in the reverse direction depending on the outside air, but this does not mean malfunction.
Check if cool air blows and water is drained.
• In case of test run, the OFF timer will be activated, and the test run will automatically stop after two hours.
• The room temperature display section shows the pipe temperature of indoor units during the test run.
• Check that all the indoor units are running properly in case of simultaneous twin and triple operation. Malfunctions may not be displayed regardless of incorrect wiring.
w1 After turning on the power supply, the system will go into startup mode, “H0” will blink on the display section of the room
temperature, and lamp(red) of the remote controller will flash. As to INDOOR BOARD LED, LED1 and LED2 will be lit up in case the address is 0, or turned off in case the address is not
0. LED3 will blink. As to OUTDOOR BOARD LED, LED1(green) and LED2(red) will light up. (After the startup mode of the system finishes, LED2(red) will be turned off.)
In case OUTDOOR BOARD LED is digital display, — and — will be displayed alternately every second.
• If one of the above operations doesn’t function correctly, the causes written below should be considered. Find causes from the symptoms. The below symptoms are under test run mode. “startup” in the table means the display status of w1 written above.
Symptoms in test run mode
Remote Controller Display
Remote controller displays “H0”, and cannot be operated.
After power is turned on, “H0” is displayed for 3 minutes, then error code is displayed.
No display appears even when remote controller operation switch is turned on. (Operation lamp does not light up.)
Display appears but soon disappears even when remote controller is operated.
OUTDOOR BOARD LED Display
< > indicates digital display.
After “startup” is displayed, only green lights up. <00> After “startup” is displayed, green(once) and red(once) blink alternately. <F1>
After “startup” is displayed, green(once) and red(twice) blink alternately. <F3, F4, F9>
After “startup” is displayed, green(twice) and red(once) blink
alternately. <EA. Eb> After “startup” is displayed, only
green lights up. <00> After “startup” is displayed, only
green lights up. <00>
• After power is turned on, “H0” is displayed for 2 minutes during system startup. (Normal)
• Incorrect connection of outdoor terminal block (L, N and S1, S2, S3.)
• Outdoor unit’s safeguard installation connector is open.
• Incorrect wiring between the indoor and outdoor unit (Polarity is wrong for S1, S2, S3.)
• Remote controller transmission wire short.
• There is no outdoor unit of address 0. (Address is other than 0.)
• Remote controller transmission wire burnout.
• After canceling function selection, operation is not possible for about 30 seconds. (Normal)
Cause
26
Page 27
wPress the remote controller’s CHECK button twice to perform self-diagnosis. See the table below for the
LCD
Contents of inferior phenomena
P1 P2 P4 P5 P6 P8 P9
Abnormality of room temperature thermistor Abnormality of pipe temperature thermistor/Liquid Abnormality of drain sensor Drain overflow protection is working. Freezing/overheating protection is working. Abnormality of pipe temperature Abnormality of pipe temperature thermistor/Cond./Eva
LCD
Contents of inferior phenomena
U1~UP
F3~F9 E0~E5
E6~EF
----
FFFF
Malfunction outdoor unit Malfunction
outdoor unit Remote controller transmitting error Indoor/outdoor unit communication error
No error history No applied unit
LED1
(microcomputer power supply)
LED2
(remote controller)
LED3
(indoor/outdoor communication)
Lits when power is supplied. Remote controller The indoor unit should be connected to the outdoor unit with address “0” setting.
Flash when indoor and outdoor unit are communicating.
ON
SW4
12
A Stop B Cooling C Operation D Heating
A
CD
B
(Factory setting)
contents of LCD display.
See the table below for details of the LED display (LED 1, 2, 3) on the indoor controller circuit board.
13-2-2. Test run by outdoor unit SW4
The setting of test run (ON/OFF) and its operation mode (cooling/heating) can be set by SW4 on the controller circuit board of outdoor unit. Check that SW5-1 is set to OFF before performing test run. If SW5-1 is set to ON, turn it OFF and then perform test run. After finishing test run, set SW5-1 back to ON.
1Set operation mode(cooling or heating) by SW4-2. 2Start test run by setting SW4-1 to ON ( ) with the indicated operation mode of SW4-2. 3Finish test run by setting SW4-1 to OFF ( ).
• Operation mode cannot be changed by SW4-2 during test run. Stop test run to change operation mode by SW4-1, and restart test run by SW4-1 after
the mode is changed.
• Test run automatically stops 2 hours later by 2-hour OFF timer function.
• Test run can be performed by the remote controller.
• The remote controller display of test run by outdoor unit is the same as that of test run by
remote controller.
27
Page 28
13-3. MALFUNCTION-DIAGNOSIS METHOD BY REMOTE CONTROLLER
Mode number
Setting number
Refrigerant address
Unit number
PAR-20MAA
ON/OFF
CENTRALLY CONTROLLED
ERROR CODE
CLOCK
ON OFF
˚C
CHECK
CHECK MODE
FILTER
TEST RUN FUNCTION
˚C
1Hr.
NOT AVAILABLE
STAND BY DEFROST
FILTER
CHECK TEST
TEMP.
TIMER SET
E G
CD H
F
I A
B
J
1
2
a)
3(1)
c)
b)
d)
e)
13-3-1. Error history of unit
(1) Wired remote controller
<In case of trouble during operation>
If there is a trouble on air conditioner, both indoor unit and out­door unit will stop and digital display shows what was wrong.
1 “CHECK” and refrigerant address are displayed at set tem-
perature display. Error code and unit number are displayed at clock display alternately. (If outdoor unit is malfunctioning, unit number is 00.)
2 The refrigerant address and error code initially sent from the
unit are displayed in case of group control system which one remote controller controls plural refrigerant systems.
3 Press the “ON/OFF” button to cancel error code.
In case of central control by the controller of MELANS, can­cel the error code by the controller of the MELANS, and in case of distant-handy combined operation, cancel the error code by cancelling distant operation.
<Malfunction-diagnosis method at maintenance service>
Digital control has memory function that memorizes latest error code even if it is cancelled by remote controller or power is shut off, so error histories can be searched by following the procedure below.
Search error histories of each unit by remote controller.
1 Turn to self-diagnosis mode.
Press the H “CHECK” button twice within three seconds, and following display appears.
a) Refrigerant address for self-diagnosis
2 Set refrigerant address number that you want to diagnose.
Press the F (temp.) button to set refrigerant address to be diagnosed. Refrigerant address has number from 00 to 15. Three seconds after setting, lighted self-diagnosed refriger­ant address begins blinking and self-diagnosis process begins.
3 Self-diagnosis result display
(1) When there is an error history.
(Refer to 13-4. for details of error code contents.) b) Alternating display c) Error code d) Attribute of error search e) Unit number
(2) When there is no error history. (3) When the address does not exist.
28
Page 29
4 To cancel self-diagnosis
(2)
(3)
5 (1)
b)
(2)
(3)
There are following two methods to cancel self-diagnosis: Press the H “CHECK” button twice within three seconds. Self-diagnosis is cancelled and the display screen will return to the status before self-diagnosis. Press the I “ON/OFF” button. Self-diagnosis is cancelled and indoor unit will stop. This operation is ineffectual when the operation of remote controller is prohibited. During self-diagnosis at maintenance service, all the indoor units start performing fan operation except for the indoor unit indicating the latest error. Then outdoor units of the same refrigerant system also start performing fan operation intermittently for 3 minutes. (The fan is on for 3 seconds and then off for 5 seconds.)
The unit with error can be inspected by using this. In case unit other than indoor unit, such as outdoor unit and con­troller of MELANS, has an error, all the indoor units of the same refrigerant system stop fan operation and outdoor units operate intermittently for 3 minutes.
5 To delete error code
When something is wrong with air conditioner, error code
(P1 etc.) is memorized, but error code can be deleted after
termination of service.
<To delete error cord with remote controller>
(1)Display the error cord at the self-diagnosis result display
screen.
b) Alternating display
(2)The address for self-diagnosis will blink when the D
w button is pressed twice within three seconds.
(3) The display (3) shown on the left will be appeared when
the error cord has been reset. Note that the error content will be redisplayed if error cord resetting is unsuccessful.
<To delete error cord with switch of outdoor unit>
Refer to “13-10. FUNCTION OF SWITCHES, CONNEC-
TORS AND JUMPERS”.
29
Page 30
ON/OFF
TEMP
FAN
VANE
MODE
CHECK
LOUVER
TEST RUN
AUTO STOP
AUTO START
h
min
RESET
SET
CLOCK
CHECK
CHECK display
Temperature button
CHECK button
Refrigerant address display
HOUR button
ON/OFF button
Inspected unit
Error code
P1 P2 P4 P5 P6 P8 P9
E4, E5
Beep output
beep O 1 time beep O 2 times beep O 4 times beep O 5 times beep O 6 times beep O 8 times beep O 2 times
Other than above
Operation LED 1 sec. O 1 time 1 sec.O 2 times 1 sec.O 4 times 1 sec.O 5 times 1 sec.O 6 times 1 sec.O 8 times 1 sec.O 2 times
Other than above
Indoor unit
Inspected unit
Check code
F1–F9
U0–UP
E6–EE
No check code
(normal)
Beep output
beep beep O 1 time
Other than above
No output
beep beep beep
Operation LED (0.4sec+0.4sec)
O 1 time
Other than above
Lights off
Lights off
Outdoor
unit
No check code (mistake of match­ing with refrigerant
address)
(2) Digital wireless remote controller <In case of trouble during operation>
When a malfunction occurs to air conditioner, both indoor unit and outdoor unit will stop and operation lamp blinks to inform unusual stop.
<Malfunction-diagnosis method at maintenance service>
[Procedure]
1. Press the CHECK button twice.
• "CHECK" lights, and refrigerant address "00" flashes.
• Check that the remote controller's display has stopped before continuing.
2. Press the temperature buttons.
• Select the refrigerant address of the indoor unit for the self-diagnosis.
Note: Set refrigerant address using the
outdoor unit’s DIP switch (SW1).
(For more information, see the outdoor unit installation manual.)
3. Point the remote controller at the sensor on the indoor unit and press the HOUR button.
• If an air conditioner error occurs, the indoor unit's sensor emits an intermit­tent buzzer sound, the operation light flashes, and the error code is output. (It takes 3 seconds at most for error code to appear.)
4. Point the remote controller at the
• The check mode is cancelled.
sensor on the indoor unit and press the ON/OFF button.
Malfunction diagnosis can be performed only for refrigerant system control-
ling wireless units.
30
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13-3-2. Wired Remote controller Diagnosis
1
a)
2
3(1)
(2)
(3)
(4)
b)
If operation can not be carried out from remote controller, try remote controller diagnosis with following process.
1 First, check the electricity current marker.
When correct voltage (DC12V) is not supplied to remote controller, the electricity current marker is put out. If the electricity current marker is not lighted, check the remote controller wiring and the indoor units.
a) Electric current marker
2 Transfer to remote controller diagnosis mode
Hold down the H “CHECK” button for five seconds or more, and following display appears.
Press the A “FILTER” button, and remote controller diagno­sis will begin.
3 Remote controller diagnosis result
(1) When the remote controller is functioning correctly
Check other possible causes, as there is no problem with remote controller. Consider the unit is normal when remote controller trans­mits the result of diagnosis to indoor or outdoor unit and receives the same data back.
(2) When remote controller has malfunction
The remote controller must be replaced. If the transmitting-receiving circuit is defective, [‘NG’] blinks. "NG" will be displayed when remote controller transmits the result of diagnosis to indoor or outdoor unit, and receives no response.
When there might be other problems than diagnosed remote controller,
(3) There might be noise on transmission path or damage of
other remote controllers or indoor units. Check the trans-
mission path and other controllers. If the transmission is not possible, [E3] blinks. "E3" will be displayed when remote controller transmits the result of diagnosis to indoor or outdoor unit and receives different data back.
(4) The number of data errors means the difference
between the number of bits sent from remote controller
and the actual number of bits sent to transmission path.
If the data error is displayed, noise and etc. are interfer-
ing with the transmission data. Check the transmission
path. If the data error has occurred, [ERC] and number of data errors are displayed.
b) Number of generated data errors (maximum 66 errors)
When the number of data errors is 02. Transmission data from remote controller Transmission data on transmission path
4 Cancel the remote controller diagnosis
Hold down the H “CHECK” button for five seconds or more to cancel remote controller diagnosis, then [H0] operation lamp will blink and the display screen will return to the sta­tus before remote controller diagnosis in about 30 seconds.
31
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13-4. SELF-DIAGNOSIS ACTION TABLE
<Abnormalities detected when the power is put on>
Error Code
Meaning of error code and detection method
1 No voltage is supplied to terminal
block(TB1) of outdoor unit.
a) Power supply breaker is put b) Contact failure or discon-
c) Open phase (L2 or N phase)
2 Electric power is not supplied to
outdoor controller circuit board.
a) Disconnection of connector
(Note 1) Refer to indoor unit section for code P and code E.
Case
off. nection of power supply
terminal.
(CNDC)
1 Check following items.
a) Power supply breaker b) Connection of power supply terminal block.
c) Connection of power supply terminal block.
2 Check connection of the connector (CNDC)
on the outdoor controller circuit board. Check connection of the connector, (CNDC) the outdoor noise filter circuit board.
Refer to 13-9.
Judgment and action
(TB1) (TB1)
None
F3
(5202)
F5
(5201)
F9
(4119)
63L connector open
Abnormal if 63L connector circuit is open for three minutes continuously after power supply. 63L: Low-pressure switch
63H connector open
Abnormal if 63H connector circuit is open for three minutes continuously after power supply. 63H: High-pressure switch
2 connector open
Abnormal if both 63H and 63L connector circuits are open for three minutes continu­ously after power supply.
63H: High-pressure switch 63L: Low-pressure switch
3 Disconnection of outdoor noise
filter circuit board or parts failure in outdoor noise filter circuit board.
4 Defective outdoor controller
circuit board.
1 Disconnection or contact failure
of 63L connector on outdoor controller circuit board.
2 Disconnection or contact failure
of 63L.
3 63L is working due to refriger-
ant leakage or defective parts.
4 Defective outdoor controller
circuit board.
1 Disconnection or contact failure
of 63H connector on outdoor controller circuit board.
2 Disconnection or contact failure
of 63H.
3 63H is working due to defective
parts.
4 Defective outdoor controller
circuit board.
1 Disconnection or contact failure
of connector (63H,63L) on outdoor controller circuit board.
2 Disconnection or contact failure
of 63H, 63L.
3 63H and 63L are working due
to defective parts.
4 Defective outdoor controller
circuit board.
3 a) Check connection of outdoor noise filter
circuit board.
b) Replace outdoor noise filter circuit board.
Refer to 13-9.
4 Replace controller board (When items above
are checked but the units can not be repaired.)
1 Check connection of 63L connector on
outdoor controller circuit board. Refer to 13-9.
2 Check the 63L side of connecting wire. 3 Check refrigerant pressure.
Charge additional refrigerant. Check continuity by tester. Replace the parts if the parts are defective.
4 Replace outdoor controller circuit board. 1 Check connection of 63H connector on
outdoor controller circuit board. Refer to 13-9.
2 Check the 63H side of connecting wire. 3 Check continuity by tester.
Replace the parts if the parts are defective.
4 Replace outdoor controller circuit board.
1 Check connection of connector(63H,63L) on
outdoor controller circuit board. Refer to 13-9.
2 Check the 63H and 63L side of connecting
wire.
3 Check continuity by tester.
Replace the parts if the parts are defective.
4 Replace outdoor controller circuit board.
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Page 33
Error Code
EA
(6844)
Eb
(6845)
EC
(6846)
Meaning of error code and detection method Indoor/outdoor unit connector
mis-wiring, excessive number of units (4 units or more)
1. Outdoor controller circuit board can automatically check the number of connected indoor units. Abnormal if the number cannot be checked automatically due to mis-wiring of indoor/outdoor unit connecting wire and etc. after power is turned on for 4 minutes.
2. Abnormal if outdoor controller circuit board recognizes the number of connected indoor units as “5 units or more”.
Mis-wiring of indoor/outdoor unit connecting wire (converse wiring or disconnection)
Outdoor controller circuit board can automatically set the unit number of indoor units. Abnormal if the indoor unit number can not be set within four minutes after power on because of mis-wiring (converse wiring or disconnection) of indoor/outdoor unit connecting wire.
Start-up time over
The unit can not finish start-up process within four minutes after power on.
1 Contact failure or mis-wiring of
2 Diameter or length of
3 5 or more indoor units are 4 Defective transmitting receiving
5 Defective transmitting receiving
6 Defective indoor power circuit 7 Two or more outdoor units
8 Noise has entered into power
1 Contact failure or mis-wiring of
2 Diameter or length of
4 Defective transmitting receiving
5 Defective transmitting receiving
6 Defective indoor power circuit 7 Two or more outdoor units
8 Noise has entered into power
1 Contact failure of indoor/ 2 Diameter or length of indoor/
7 Two or more outdoor units
8 Noise has entered into power
Case
indoor/outdoor unit connecting wire.
indoor/outdoor unit connecting wire is out of specified capacity.
connected to one outdoor unit. circuit of outdoor controller
circuit board. circuit of indoor controller cir-
cuit board. board. have refrigerant address “0” .
(In case of group control)
supply or indoor / outdoor unit connecting wire.
indoor/outdoor unit connecting wire.
indoor/outdoor unit connecting wire is out of specified capacity.
circuit of outdoor controller circuit board.
circuit of indoor controller circuit board.
board. have refrigerant address “0” .
(In case of group control)
supply or indoor/outdoor unit connecting wire.
outdoor unit connecting wire. outdoor unit connecting wire is
out of specified capacity. have refrigerant address “0” .
(In case of group control) supply or indoor/outdoor unit
connecting wire.
Judgment and action
1 Check disconnection or looseness or polarity
of indoor/outdoor unit connecting wire of indoor and outdoor units.
2 Check diameter and length of indoor/outdoor
unit connecting wire. Total wiring length: 80m (including wiring connecting each indoor unit and between indoor and outdoor unit) Also check if the connection order of flat cable is S1, S2, S3.
3 Check the number of indoor units that are
connected to one outdoor unit. (If EA is detected)
4~6 Put the power off once, and on again to
check. Replace outdoor controller circuit board, indoor controller circuit board or indoor
power
board if abnormality occurs again.
7 Check if refrigerant addresses (SW1-3 to
SW1-6 on outdoor controller circuit board) are overlapping in case of group control system.
8 Check transmission path, and remove the
cause.
w The descriptions above, 1-8, are for EA, Eb
and EC.
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Page 34
<Abnormalities detected while unit is operating>
<Abnormalities detected while unit is operating>
Error Code
U1
(1302)
U2
(1102)
Meaning of error code and detection method
Abnormal high pressure (High-pressure switch 63H worked)
Abnormal if high-pressure switch 63H worked ( 3.6MPa ) during compressor operation.
63H: High-pressure switch
Abnormal high discharging temperature
(1) Abnormal if discharge temperature
thermistor (TH4) exceeds 125: or 110: continuously for 5 minutes.
Abnormal if condenser/evaporator
temperature thermistor (TH5) exceeds 40: during defrosting and discharge temperature thermistor (TH4) exceeds 110:.
(2) Abnormal if discharge super heat
(Cooling: TH4 – TH5 / Heating: TH4 –
TH6) increases.
All the conditions in Aor B are detected
simultaneously for 10 minutes continuously after 6 minutes past from compressor start-up (including the thermostat indication or recovery from defrosting).
<Condition A>
• Heating mode
• When discharge super heat is less than 70 deg.
• When the TH6 temp is more than the value obtained by TH7 – 5 deg.
• When the condensing temp of TH5 is less than 35:.
Case
1 Short cycle of indoor unit. 2 Clogged filter of indoor unit. 3 Decreased airflow caused by
dirt of indoor fan.
4 Dirt of indoor heat exchanger. 5 Locked indoor fan motor. 6 Malfunction of indoor fan motor. 7 Defective operation of stop
valve (Not full open).
8 Clogged or broken pipe. 9 Locked outdoor fan motor.
0 Malfunction of outdoor fan
motor.
1 Short cycle of outdoor unit. 2 Dirt of outdoor heat exchanger. 3 Decreased airflow caused by
defective inspection of outside temperature thermistor (It detects lower temperature than actual temperature.)
4 Disconnection or contact failure
of connector (63H) on outdoor controller circuit board.
5 Disconnection or contact failure
of 63H connection.
6 Defective outdoor controller cir-
cuit board.
7 Defective action of linear
expansion valve.
8 Malfunction of fan driving
circuit.
1 Over-heated compressor oper-
ation caused by shortage of refrigerant.
2 Defective operation of stop
valve.
3 Defective thermistor. 4 Defective outdoor controller cir-
cuit board.
5 Defective action of linear
expansion valve.
Judgment and action
1~6Check indoor unit and repair defectives.
7 Check if stop valve is full open. 8 Check piping and repair defectives.
9~2 Check outdoor unit and repair defectives.
3 Check the inspected temperature of outside
temperature thermistor on LED display. (SW2 on A-Control Service Tool : Refer to page 57.)
4~6Put the power off and check F5 is
displayed when the power is put again. When F5 is displayed, refer to “Judgment and action” for F5.
7 Check linear expansion valve.
Refer to 13-6.
8 Replace outdoor controller circuit board or
FAN controller circuit board.
1 Check intake super heat.
Check leakage of refrigerant. Charge additional refrigerant.
2 Check if stop valve is full open. 34 Put the power off and check if U3 is dis-
played when the power is put again. When U3 is displayed, refer to “Judgement and action” for U3.
5 Check linear expansion valve.
Refer to 13-6.
<Condition B>
• During comp operation (Cooling and
Heating)
• When discharge super heat is less
than 80 deg in Cooling.
• When discharge super heat is less
than 90 deg in Heating.
• When condensing temp of TH6 is
more than –40:. (In Cooling only.)
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Page 35
Error Code
U3
(5104)
U4
TH3, TH32
(
:5105 (TH6:5107) (TH7:5106)
(TH8:5110)
U5
(4230)
Meaning of error code and detection method
Open/short circuit of discharge temperature thermistor (TH4)
Abnormal if open (3: or less) or short (217: or more) is detected during compressor operation. (Detection is inoperative for 10 minutes of compressor starting process and for 10 minutes after and during defrosting.)
Open/short of outdoor unit thermistors (TH3, TH32, TH6, TH7, and TH8)
Abnormal if open or short is detected during compressor operation. Open detection of thermistors TH3 and TH6 is inoperative for 10 seconds to 10 minutes after compressor starting and 10 minutes after and during defrosting. WCheck which unit has abnormality in its
thermistor by switching the mode of SW2.
)
(Refer to page 62.)
Thermistors
Symbol
TH3, TH32
TH6 TH7
Thermistor <Outdoor pipe>
Thermistor <Outdoor 2-phase pipe>
Thermistor <Outdoor>
TH8
Abnormal temperature of heat sink
Abnormal if heat sink thermistor TH8, which is built in the power module, detects temperature indicated below. RP8YHA RP10YHA
......
....
95: 95:
Name
Internal thermistor
Case
1 Disconnection or contact
failure of connector (TH4) on the outdoor controller circuit board.
2 Defective thermistor. 3 Defective outdoor controller
circuit board.
1 Disconnection or contact failure
of connectors. Outdoor controller circuit board: TH3, TH32, TH6/TH7 Outdoor power circuit board:
(
CN3
2 Defective thermistor. 3 Defective outdoor controller
circuit board.
Open detection Short detection
– 40: or below – 40: or below – 40: or below – 35: or below
1 The outdoor fan motor is
locked.
2 Failure of outdoor fan motor. 3 Air flow path is clogged. 4 Rise of ambient temperature. 5 Defective thermistor. 6 Defective input circuit of
outdoor power circuit board.
7 Failure of outdoor fan drive
circuit.
Judgment and action
1 Check connection of connector (TH4) on the
outdoor controller circuit board. Check breaking of the lead wire for thermistor (TH4). Refer to 13-9.
2 Check resistance value of thermistor (TH4) or
temperature by microcomputer. (Thermistor/TH4: Refer to 13-6.) (SW2 on A-Control Service Tool: Refer to page 57.)
3 Replace outdoor controller circuit board. 1 Check connection of connector (TH3, TH32,
TH6/TH7) on the outdoor controller circuit board. Check connection of connector (CN3) on the outdoor power circuit board. Check breaking of the lead wire for thermistor
)
(TH3, TH32, TH6,TH7,TH8). Refer to 13-9.
2 Check resistance value of thermistor (TH3,
TH32, TH6,TH7,TH8) or check temperature by microcomputer. (Thermistor/TH3,TH32,TH6,TH7,TH8: Refer to13-6.) (SW2 on A-Control Service Tool: Refer to
page 57.) 3 Replace outdoor controller circuit board. WEmergency operation is available in case of
abnormalities of TH3, TH32, TH6 and TH7. Refer to 13-8.
90: or above 90: or above 90: or above
170: or above
12 Check the resistance of outdoor fan motor
wiring.
Refer to “13-6 HOW TO CHECK THE PART”.
3 Check air flow path for cooling. 4 Check if there is something which causes
temperature rise around outdoor unit. (Upper limit of ambient temperature is 46:.) Turn off power, and on again to check if U5 is displayed within 30 minutes. If U4 is displayed instead of U5, follow the action to be taken for U4.
5 Check TH8 temperature by microcomputer.
(SW2 on A-Control Service Tool: Refer to page 57.)
6 Replace outdoor power circuit board. 7 Replace outdoor controller circuit board.
U6
(4250)
Compressor overcurrent interruption (When compressor locked)
Abnormal if overcurrent of DC bus or compressor is detected within 30 seconds after compressor starts operating.
Abnormality of power module
Check abnormality by driving power module in case overcurrent is detected.
1 Stop valve is closed. 2 Decrease of power supply
voltage.
3 Looseness, disconnection or
converse of compressor wiring connection.
4 Defective compressor. 5 Defective outdoor power circuit
board.
1 Outdoor stop valve is closed. 2 Decrease of power supply voltage 3 Looseness, disconnection or
converse of compressor wiring connection.
4 Defective compressor. 5 Defective outdoor power circuit
board.
35
1 Open stop valve. 2 Check facility of power supply.
3 Correct the wiring (U•V•W phase) to
compressor.
Refer to page 52 and 53.
4 Check compressor.
Refer to 13-6.
5 Replace outdoor power circuit board.
1 Open stop valve. 2 Check facility of power supply. 3 Correct the wiring (U•V•W phase) to
compressor. Refer to 13-9.
4 Check compressor referring to 13-6. 5 Replace outdoor power circuit board.
Page 36
Error Code
U9
(4220)
Meaning of error code and detection method
Abnormality such as overvoltage or voltage shortage and abnormal synchronous signal to main circuit
Abnormal if any of followings are detected during compressor operation;
• Instantaneous decrease of DC bus voltage to 400V.
Increase of DC bus voltage to 760V.
• Decrease of input current of outdoor unit to 0.5A only if operation frequency is more than or equal to 40Hz or compressor current is more than or equal to 5A.
1 Decrease of power supply voltage. 2 Defective 52C drive circuit of
3 Disconnection or loose
4 Defective ACCT of outdoor 5 Disconnection or loose
Case
outdoor power circuit board. connection of CN5 on the
outdoor power circuit board or outdoor noise filter circuit board.
noise filter circuit board. connection of CN2 on the
outdoor power circuit board.
Judgment and action
1 Check the facility of power supply. 2 Replace outdoor power circuit board.
3 Check CN5 wiring on the outdoor power
circuit board or outdoor noise filter circuit board. Refer to 13-9.
4 Replace outdoor noise filter circuit board. 5 Check CN2 wiring on the outdoor power
circuit board. Refer to 13-9.
UF
(4100)
UH
(5300)
UL
(1300)
UP
(4210)
Compressor overcurrent interruption (When compressor locked)
Abnormal if overcurrent of DC bus or compressor is detected within 30 seconds after compressor starts operating.
Current sensor error
Abnormal if current sensor detects –1.5A to
1.5A during compressor operation. (This
error is ignored in case of test run mode.)
Abnormal low pressure (63L worked)
Abnormal if 63L is worked (under-
0.03MPa) during compressor operation.
63L: Low-pressure switch
Compressor overcurrent interruption
Abnormal if overcurrent DC dc bus or com­pressor is detected after compressor starts operating for 30 seconds.
1 Stop valve is closed. 2 Decrease of power supply
voltage.
3 Looseness, disconnection or
converse of compressor wiring connection.
4 Defective compressor. 5 Defective outdoor power circuit
board.
1 Disconnection of compressor
wiring.
2 Defective circuit of current
sensor on outdoor power circuit board.
1 Stop valve of outdoor unit is
closed during operation.
2 Disconnection or loose connection
of connector (63L) on outdoor controller circuit board.
3 Disconnection or loose
connection of 63L.
4 Defective outdoor controller cir-
cuit board.
5 Leakage or shortage of refrigerant. 6 Malfunction of linear expansion
valve.
1 Stop valve of outdoor unit is
closed.
2 Decrease of power supply volt-
age.
3 Looseness, disconnection or
converse of compressor wiring connection.
4 Defective fan of indoor/outdoor
units.
5 Short cycle of indoor/outdoor
units.
6 Defective input circuit of out-
door controller circuit board.
7 Defective compressor.
8 Defective outdoor power circuit
board.
1 Open stop valve. 2 Check facility of power supply.
3 Correct the wiring (U•V•W phase) to
compressor.
Refer to page 13-9.
4 Check compressor.
Refer to 13-6.
5 Replace outdoor power circuit board.
1 Correct the wiring (U•V•W phase) to
compressor. Refer to 13-9.
2 Replace outdoor power circuit board.
1 Check stop valve. 2~4 Put the power off and on again to check
if F3 is displayed on restarting. If F3 is displayed, follow the F3 processing
direction.
5 Correct to proper amount of refrigerant. 6 Check linear expansion valve.
Refer to 13-6.
1 Open stop valve. 2 Check facility of power supply. 3 Correct the wiring (U•V•W phase) to
compressor. Refer to 13-9.
4 Check indoor/outdoor fan. 5 Solve short cycle. 6 Replace outdoor controller circuit board. 7 Check compressor.
Refer to 13-6.
W Before the replacement of the outdoor
controller circuit board, disconnect the wiring to compressor from the outdoor power circuit board and check the output voltage among phases, U, V, W, during test run. No defect on board if voltage among phases (U-V, V-W and W-U) is same. Make sure to perform the voltage check with same performing frequency.
8 Replace outdoor power circuit board.
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Page 37
Error Code
E0
(No display)
E3
(No display)
E8
(6840)
E9
(6841)
EF
(6607
or
6608)
Ed
(0403)
Meaning of error code and detection method
Remote controller communication error (Signal receiving error)
(1) Abnormal if any signal from IC of refrig-
erant address “0” could not be normally received for three minutes.
(2) Abnormal if sub remote controller could
not receive any signal for two minutes.
Remote controller communication error (Transmitting error)
(1) Abnormal if sub remote controller could
not find blank of transmission path for six seconds.
(2) Abnormal if remote controller could not
finish transmitting 30 times continuous­ly.
Indoor/outdoor unit communication error (Signal receiving error) (Outdoor unit)
(1) Abnormal if outdoor controller circuit
board could not receive anything normally for three minutes.
Indoor/outdoor unit communication error (Transmitting error) (Outdoor unit)
(1) Abnormal if “0” receiving is detected 30
times continuously though outdoor con­troller circuit board has transmitted “1”.
(2) Abnormal if outdoor controller circuit
board could not find blank of transmission path for three minutes.
Non defined error code
This code is displayed when non defined error code is received.
Serial communication error
1.Abnormal if serial communication between outdoor controller circuit board and outdoor power circuit board is defective.
2. Abnormal if communication between outdoor controller circuit board and M-NET board is not available.
1 Defective communication cir- 2 Defective communication cir-
3 Noise has entered into trans-
4 All remote controllers are set
1 Defective communication cir- 2 Noise has entered into trans-
3 Two remote controllers are set
1 Contact failure of indoor/out- 2 Defective communication circuit 3 Defective communication cir-
4 Noise has entered into indoor/
1 Indoor/ outdoor unit connecting 2 Defective communication circuit 3 Noise has entered power supply.
4 Noise has entered indoor/ out-
1 Noise has entered transmis- 2 Noise has entered indoor/ out- 3 Outdoor unit is not a series of 4 Model name of remote con-
1 Breaking of wire or contact
2 Breaking of wire or contact
3 Defective communication circuit 4 Defective communication circuit
1 Breaking of wire or contact
2 Contact failure of M-NET board 3 Noise has entered into M-NET
Case
cuit of remote controller. cuit of indoor controller circuit
board of refrigerant address “0”.
mission line of remote con­troller.
as “sub” remote controller. In this case, E4 is displayed at outdoor LED, and E0 is dis­played at remote controller.
cuit of remote controller. mission line of remote con-
troller. as "main."
(In case of 2 remote con­trollers).
door unit connecting wire. of outdoor controller circuit board. cuit of indoor controller circuit
board. outdoor unit connecting wire.
wire has contact failure. of outdoor controller circuit board.
door unit connecting wire.
sion wire of remote controller. door unit connecting wire. power-inverter. troller is PAR-S25A.
failure of connector CN2 between the outdoor controller circuit board and the outdoor power circuit board.
failure of connector CN4 between the outdoor controller circuit board and the outdoor power circuit board.
of outdoor power circuit board of outdoor controller circuit board
for outdoor power circuit board
failure of connector between outdoor controller circuit board and M-NET board
power supply line transmission wire.
Judgment and action
1~3 Diagnose remote controller.
Take actions as follows according to diagnosis result. a) When “RC OK” is displayed,
remote controllers have no problem. Put the power off, and on again to check. If, “H0” is displayed for four minutes or more, replace indoor con­troller circuit board.
b) When “RC NG” is displayed,
replace remote controller.
c) When “RC E3” or “ERC 00-66” is dis-
played, noise may be causing abnor­mality.
4 Set a remote controller to main, and the
other to sub.
w The descriptions above, 1-3, are for E0 and
E3.
1 Check disconnection or looseness of indoor/
outdoor unit connecting wire of indoor or out­door units.
2~4 Put the power off, and on again to check.
Replace indoor controller circuit board or outdoor controller circuit board if abnormal­ity is displayed again.
1 Check disconnection or looseness of
indoor/outdoor unit connecting wire.
2~4 Put the power off, and on again to check.
Replace outdoor controller circuit board if abnormality is displayed again.
12 Put the power off, and on again to check.
Replace indoor controller circuit board or outdoor controller circuit board if abnormal­ity is displayed again.
3 Replace outdoor unit with power-inverter type
outdoor unit.
4 Replace remote controller with MA remote
controller.
12 Check connection of each connector CN2
and CN4 between the outdoor controller circuit board and the outdoor power circuit board.
3 Replace outdoor power circuit board. 4 Replace outdoor controller circuit board.
1 Check disconnection, looseness, or breaking of
connection wire between outdoor controller cir­cuit board (CNMNT) and M-NET board (CN5).
2 Check disconnection, looseness, or breaking of
connection wire between outdoor controller cir­cuit board(CNMNT) and M-NET board (CND).
3 Refer to (4) in “ 2-2. M-NET Wiring method ”
on Service Technical Guide for OCT04.
37
Page 38
Error Code
123456
ON OFF
123456
ON OFF
123456
ON OFF
123456
ON OFF
A-Control Service Tool SW2 setting
Temperature display of indoor liquid pipe Indoor 1
Temperature display of indoor liquid pipe Indoor 2
Temperature display of indoor condenser/ evaporator pipe Indoor 1
Temperature display of indoor condenser/ evaporator pipe Indoor 2
P8
Meaning of error code and detection method Abnormality of pipe temperature
1 Slight temperature difference <Cooling mode> Detected as abnormal when the pipe tem­perature is not in the cooling range 3 min­utes later of compressor start and 6 min­utes later of the liquid or condenser/evapo­rator pipe is out of cooling range. Note 1) It takes at least 9 min. to detect. Note 2) Abnormality P8 is not detected in
drying mode.
Cooling range : Indoor pipe temperature
2 Converse connection of
(TH2 or TH5) – intake temperature (TH1) [ -3 deg
TH: Lower temperature between: liquid
3 Converse wiring of indoor/
pipe temperature and condenser/ evaporator temperature
4 Defective detection of indoor <Heating mode> When 10 seconds have passed after the compressor starts operation and the hot adjustment mode has finished, the unit is
5 Stop valve is not opened detected as abnormal when condenser/evaporator pipe temperature is not in heating range within 20 minutes.
Note 3) It takes at least 27 minutes to
detect abnormality.
Note 4) It excludes the period of defrosting
(Detection restarts when defrosting mode is over)
Heating range : 3 deg [ (Condenser/
Evaporator temperature(TH5) – intake temperature(TH1))
Case
between indoor room temperature and pipe <liquid or condenser / evaporator> temperature thermistor.
• Shortage of refrigerant
• Disconnected holder of pipe <liquid or condenser /
evaporator> thermistor
• Defective refrigerant circuit
extension pipe (on plural units connection).
outdoor unit connecting wire (on plural units connection).
room temperature and pipe <condenser / evaporator> temperature thermistor.
completely.
Judgment and action
1~4 Check pipe <liquid or condenser /
evaporator> temperature with room temperature display on remote controller and outdoor controller circuit board. Pipe <liquid or condenser / evaporator> temperature display is indicated by setting SW2 of outdoor controller circuit board as follows.
Conduct temperature check with outdoor controller circuit board after connecting
(
‘A-Control Service Tool(PAC-SK52ST)’.
23Check converse connection of extension
pipe or converse wiring of indoor/outdoor unit connecting wire.
)
<M-NET communication error>
Error Code
A0
(6600)
A2
(6602)
A3
(6603)
Meaning of error code and detection method
Address duplicate definition
This error is displayed when transmission from the units of same address is detect­ed. Note) The address and attribute displayed
Hard ware error of transmission processor
Transmission processor intended to trans­mit “0”, but “1” appeared on transmission wire. Note) The address and attribute display at
BUS BUSY
1. Over error by collision damage Abnormal if transmitting is not possible for 8-10 minutes continuously because of collision of transmission.
2. Data could not reach transmission wire for 8-10 minutes continuously because of noise or etc.
Note) The address and attribute displayed
at remote controller indicate the con­troller that detected abnormality.
remote controller indicate the con­troller that detected abnormality.
at remote controller indicate the con­troller that detected abnormality.
(Note) “Indoor unit” in the text indicates M-NET board in outdoor unit.
Case Judgment and action
1 There are two or more same
address of controller of out­door unit, indoor unit, FRESH MASTER, or LOSSNAY.
2 Noise has entered into trans-
mission signal and signal was transformed.
1
Error is detected if wave form is transformed when wiring works of transmission wire of outdoor unit, indoor unit, FRESH MASTER or LOSSNAYare done, or polarity is changed with the power on and transmission data collide each other.
2 Defective transmitting receiving
circuit of transmission processor.
Search the unit with same address as abnormality occurred. If the same address is found, shut of the power supply of outdoor unit and indoor unit and FRESH MASTER or LOSSNAY at the same time for two minutes or more after the address is cor­rected, and put the power on again. Check transmission wave form or noise on trans­mission wire.
1 If the works of transmission wire is done with
the power on, shut off the power supply of outdoor unit and indoor unit and FRESH MASTER or LOSSNAY at the same time for two minutes or more, and put the power on again.
2 Check transmission wave form or noise on
transmission wire.
3 Transmission data is changed by
the noise on transmission. Transmission processor could
1
not transmit because short cycle voltage of noise and the like have entered into transmission wire continuously.
2 Transmission quantity has
increased and transmission is not possible because there was wiring mistake of terminal block for transmission wire (TB3) and terminal block for central control (TB7) in outdoor unit.
3 Transmission are mixed with
others and occupation rate on transmission wire rose because of defective repeater (a function to connector or disconnect trans­mission of control and central control system) of outdoor unit, then abnormality is detected.
1 Check if transmission wire of indoor unit,
FRESH MASTER, LOSSNAY, or remote con­troller is not connected to terminal block for central control (TB7) of outdoor unit.
2 Check if transmission wore of indoor unit,
FRESH MASTER or LOSSNAY is not con­nected to terminal block for transmission wire of outdoor unit.
3 Check if terminal block for transmission wire
(TB3) and terminal block for central control (TB7) is not connected.
4 Check transmission wave form or noise on
transmission wire.
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Page 39
Error Code
A6
(6606)
Meaning of error code and detection method Communication error with communica-
tion processor
Defective communication between unit processor and transmission processor Note) The address and attribute display at
remote controller indicate the con­troller that detected abnormality.
1 Data of transmission proces-
2 Address forwarding from unit
Case Judgment and action
sor or unit processor is not transmitted normally because of accidental trouble such as noise or thunder surge.
processor is not transmitted normally because of defective transmission processor hard­ware.
Shut of the power supply of outdoor unit and indoor unit and FRESH MASTER or LOSSNAY at the same time for two minutes or more, and put the power on again. System returns nor­mally if abnormality was accidental malfunction. If the same abnormality generates again, abnormality-generated controller may be defec­tive.
A7
(6607)
NO ACK signal
1. Transmitting side controller detects abnormal if a massage was transmitted but there is no reply (ACK) that a mas­sage was received. Transmitting side detects abnormality every 30 seconds, six times continuously.
Note) The address and attribute displayed
at remote controller is indicate the controller that did not reply (ACK).
2. If displayed address or attribute is out­door unit, Indoor unit detects abnormality when indoor unit transmitted to outdoor unit and there was no reply (ACK).
3. If displayed address or attribute is indoor unit, Remote controller detects abnormality when remote controller transmitted to indoor unit and there was no reply (ACK).
Common factor that has no rela­tion with abnormality source. 1 The unit of former address
does not exist as address switch has changed while the unit was energized.
2 Extinction of transmission wire
voltage and signal is caused by over-range transmission wire.
• Maximum distance ······200m
Remote controller line
3 Extinction of transmission wire
voltage and signal is caused by type-unmatched transmission wire. Type······
With shield wire-
CVVS, CPEVS
With normal wire (no shield)-
VCTF, VCTFK, CVV CVS, VVR, VVF, VCT
Diameter····1.25mm2or more
4 Extinction of transmission wire
voltage and signal is caused by over-numbered units.
5 Accidental malfunction of
abnormality-detected controller (noise, thunder surge).
6 Defective of abnormality-gen-
erated controller.
1 Contact failure of transmission
wire of outdoor unit or indoor unit.
2 Disconnection of transmission
connector (CN2M) of outdoor unit.
3 Defective transmitting receiv-
ing circuit of outdoor unit or indoor unit.
1 During group operation with
indoor unit of multi- refrigerant system, if remote controller transmit to indoor unit while outdoor unit power supply of one refrigerant system is put off or within two minutes of restart, abnormality is detected.
2 Contact failure of transmission
wire of remote controller or indoor unit.
3 Disconnection of transmission
connector (CN2M) of indoor unit.
4 Defective transmitting receiv-
ing circuit of indoor unit or remote controller.
··(12m)
Always try the followings when the error “A7” occurs.
1 Shut off the power supply of outdoor unit and
indoor unit and FRESH MASTER or LOSS­NAY at the same time for two minutes or more, and put the power on again. If mal­function was accidental, the unit returns to normal.
2 Check address switch of abnormality-gener-
ated address.
3 Check disconnection or looseness of abnor-
mality-generated or abnormality-detected transmission wire (terminal block and con­nector)
4 Check if tolerance range of transmission wire
is not exceeded.
5 Check if type of transmission wire is correct
or not.
If there were some trouble of 1-5 above, repair the defective, then shut off the power supply of outdoor unit and indoor unit and FRESH MASTER or LOSSNAY at the same time for two minutes or more, and put the power on again.
• If there was no trouble with 1-5 above in sin­gle refrigerant system (one outdoor unit), con­troller of displayed address or attribute is defective.
• If there was no trouble with 1-5 above in dif­ferent refrigerant system (two or more outdoor units), judge with 6.
6 If address of abnormality source is the
address that should not exist, there is the unit that memorizes nonexistent address information. Delete useless address informa­tion with manual setting function of remote controller. Only the system FRESH MASTER or LOSS­NAY are connected to, or the system that is equipped with group setting of different refrigerant system.
If there was no trouble with 1-6 above, replace the controller board of displayed address or attribute. If the unit does not return normally, multi-con­troller board of outdoor unit may be defective (repeater circuit). Replace multi-controller board one by one to check if the unit returns normally.
39
Continued to the next page.
Page 40
From the previous page.
Error Code
Meaning of error code and detection method
4. If displayed address or attribute is remote controller, Indoor unit detects abnormality when indoor unit transmitted to remote con­troller and there was no reply (ACK).
Case Judgment and action
1 During group operation with
indoor unit of multi- refrigerant system, if indoor unit transmit to remote controller while out­door unit power supply of one refrigerant system is put off or within two minutes of restart, abnormality is detected.
2 Contact failure of transmission
wire of remote controller or indoor unit.
3 Disconnection of transmission
connector (CN2M) of indoor unit.
4 Defective transmitting receiv-
ing circuit of indoor unit or remote controller.
Same as mentioned in “A7” of the previous page.
A7
(6607)
5. If displayed address or attribute is FRESH MASTER, Indoor unit detects abnormality when indoor unit transmitted to FRESH MAS­TER and there was no reply (ACK).
6. If displayed address or attribute is LOSSNAY, Indoor unit detects abnormality when indoor unit transmitted to LOSSNAY and there was no reply (ACK).
1 During sequential operation of
indoor unit and FRESH MAS­TER of other refrigerant sys­tem, if indoor unit transmits to FRESH MASTER while out­door unit power supply of same refrigerant system with FRESH MASTER is put off or within two minutes of restart, abnormality is detected.
2 Contact failure of transmission
wire of indoor unit or FRESH MASTER.
3 Disconnection of transmission
connector (CN2M) of indoor unit or FRESH MASTER.
4 Defective transmitting receiv-
ing circuit of indoor unit or FRESH MASTER.
1 If the power supply of LOSS-
NAY is off, indoor unit detects abnormality when it transmits to LOSSNAY.
2 During sequential operation of
indoor unit and LOSSNAY of other refrigerant system, if indoor unit transmits to LOSS­NAY while outdoor unit power supply of same refrigerant sys­tem with LOSSNAY is put off or within two minutes of restart, abnormality is detect­ed.
3 Contact failure of transmission
wire of indoor unit of LOSS­NAY.
4 Disconnection of transmission
connector (CN2M) of indoor unit.
5 Defective transmitting receiv-
ing circuit of indoor unit or LOSSNAY.
7. If displayed address or attribute is nonexistent,
1 The unit of former address
does not exist as address switch has changed while the unit was energized.
2 Abnormality is detected when
indoor unit transmitted because the address of FRESH MASTER and LOSS­NAY are changed after sequential operation of FRESH MASTER and LOSS­NAY by remote controller.
40
Page 41
Error Code
A8
(6608)
Meaning of error code and detection method
M-NET•NO RESPONSE
Abnormal if a massage was transmitted and there were reply (ACK) that massage was received, but response command does not return. Transmitting side detects abnormality every 30 seconds, six times continuously. Note) The address and attribute displayed
at remote controller is indicate the controller that did not reply (ACK).
1 Transmitting condition is
2 Extension of transmission wire
3 Extension of transmission wire
4 Accidental malfunction of
Case Judgment and action
repeated fault because of noise and the like.
voltage and signal is caused by over-range transmission wire.
• Maximum distance ······200m Remote controller line
voltage and signal is caused by type-unmatched transmis­sion wire. Type······
With shield wire-
CVVS, CPEVS
With normal wire (no shield)-
VCTF, VCTFK, CVV CVS, VVR, VVF, VCT
Diameter····1.25mm2or more abnormality-generated
controller.
··(12m)
13-5. TROUBLESHOOTING BY INFERIOR PHENOMENA
Phenomena
1. Remote controller display does not work.
2. “H0” display is remained on the remote controller.
1DC12V is not supplied to remote controller.
(Power supply display is not indicated on LCD.)
2DC12~15V is supplied to remote controller, however,
no display is indicated.
“H0” is not displayed.
“H0” is displayed.
1At longest 2 minutes after the power supply “H0” is
displayed to start up.
2Communication error between the remote controller
and indoor unit.
3Communication error between the indoor and outdoor
unit.
4Outdoor unit protection device connector is open.
Factor Countermeasure
1 Check transmission wave form or noise on
transmission wire.
2 Shut off the power supply of outdoor unit and
indoor unit and FRESH MASTER or LOSS­NAY at the same time for two minutes or more, and put the power on again. If mal­function was accidental, the unit returns to normal. If the same abnormality generates again, controller of displayed address and attribute may be defective.
1Check LED2 on indoor controller circuit
board. (1) When LED2 is lit.
Check the remote controller wiring for breaking or contact failure.
(2) When LED2 is blinking.
Check short circuit of remote controller wiring.
(3) When LED2 is not lit.
Refer to No.3 below.
2Check the following.
Failure of remote controller if “H0” is not displayed
Refer to No.2 below if “H0” is displayed.
1Normal operation 2Self-diagnosis of remote controller 3“H0” is displayed for 6 minutes at most. in
case of indoor/outdoor unit communica- tion error. Check LED3 on indoor con­troller board. (1)When LED3 is not blinking.
Check indoor/outdoor connecting wire for mis-wiring. (Converse wiring of S1 and S2, or break of S3 wiring.)
(2)When LED3 is blinking.
Indoor/outdoor connecting wire is nor­mal.
4Check LED display on outdoor controller
circuit board. Refer to page 55 and 56. Check protection device connector (63L and 63H) for contact failure. Refer to 13-9.
3. When pressing the remote controller operation switch the OPERATION display is appeared but it will be turned off soon.
4. Even controlling by the wireless remote controller no beep is heard and the unit does not start operat­ing. Operation display is indicated on wireless remote controller.
1After cancelling to select function from the remote
controller, the remote controller operation switch will be not accepted for approx. 30 seconds.
1The pair number settings of the wireless remote
controller and indoor controller circuit board are mis­matched.
41
1Normal operation
1Check the pair number settings.
Page 42
Phenomena
5. When operating by the wireless remote controller, beep sound is heard, however, unit does not start operating.
6. Remote controller display works normally and the unit performs cooling operation, however, the capacity cannot be fully obtained. (The air does not cool well.)
7. Remote controller display works nor­mally and the unit performs heating operation, however, the capacity cannot be fully obtained.
Factor
1No operation for 2 minutes at most after the power
supply ON.
2Hand-held remote controller operation is prohibited.
• Remote controlling adaptor is connected to CN32 on the indoor controller circuit board.
• Hand-held remote controller operation is prohibited
by centralised controller etc. since it is connected to MELANS.
3Factor of No.2 above. 1Refrigerant shortage.
2Filter clogging. 3Heat exchanger clogging. 4Air duct short cycle.
1Linear expansion valve fault.
Opening cannot be adjusted well due to linear expan­sion valve fault.
2Refrigerant shortage. 3Lack of insulation for refrigerant piping. 4Filter clogging. 5Heat exchanger clogging. 6Air duct short cycle . 7Bypass circuit of outdoor unit fault.
Countermeasure
1Normal operation. 2Normal operation.
3Check the details of No.2 above. 1If refrigerant leaks, discharging tempera-
ture rises and LEV opening increases. Inspect leakage by checking the tem- perature and opening.
Check pipe connections for gas leakage.
2Open suction grill and check the filter.
Clean the filter by removing dirt or dust on it.
3• If the filter is clogged, indoor pipe tem-
perature rises and discharging pressure increases. Check if heat exchanger is clogged by inspecting discharging pres­sure.
Clean the heat exchanger.
4Remove the shield.
1Discharging temperature and indoor
heat exchanger temperature does not rise. Inspect the failure by checking discharg­ing pressure.
Replace linear expansion valve.
2• If refrigerant leaks, discharging tempera
ture rises and LEV opening increases. Inspect leakage by checking the tem­perature and opening.
Check pipe connections for gas leakage.
3Check the insulation. 4Open suction grill and check the filter.
Clean the filter by removing dirt or dust on
it.
5• If the filter is clogged, indoor pipe tem-
perature rises and discharging pressure increases. Check if heat exchanger is clogged by inspecting discharging pres­sure.
Clean the heat exchanger.
6Remove the shield. 7Check refrigerant system during operation.
8. 1For 3 minutes after temperature adjuster turns off, the compressor will not start operating even if temperature adjuster is turned on.
2For 3 minutes after temperature
adjuster turns on, the compressor will not stop operating even if temperature adjuster is turned off. (Compressor stops operating immediately when turning off by the remote controller.)
9. Defective fan of outdoor units. (Not rotate)
12Normal operation.
(For protection of compressor)
1Defective fan motor (Winding open or shoot). 2Disconnection or loose connection of connector on
outdoor Fan controller circuit board.
3Defective Outdoor fan controller circuit board.
42
12Normal operation
1Check the winding resistance.
Refer to 13-6. However, make sure to check the resis­tance after it gets cold enough ([87i15:), as there is a possibility that the tempera­ture protector housed in the fan motor is working.
2Check CN2, CN5, CN6, TAB-U, TAB-V,
TAB-W, TAB-W wiring.
3Replace outdoor fan controller circuit board.
Page 43
13-6. HOW TO CHECK THE PARTS
1 2 3 4 5 6
M
Blue
Brown
Yellow
Orange
Red
White
Parts name
Check points
Disconnect the connector then measure the resistance using a tester. (Surrounding temperature 10:~30:)
Disconnect the connector then measure the resistance using a tester. (
Winding temperature 20
:)
Thermistor (TH3, TH32) <Outdoor pipe>
Thermistor (TH4) <Discharge>
Thermistor (TH6) <Outdoor 2-phase pipe>
Thermistor (TH7) <Outdoor>
Normal
160k"~410k"
4.3k"~9.6k"
TH4
TH3, TH32
TH6 TH7
Abnormal
Open or short
Normal
Red - White
Red - Orange
Brown - Yellow
Brown - Blue
Abnormal
46±4"
Measure the resistance between the terminals using a tester. (Surrounding temperature 20
:
)
Solenoid valve coil <Four-way valve> (21S4)
Pin number of relay connector is different from that motor connector
Motor for compressor (MC)
Linear expansion valve ( LEV(A) )
Normal
Abnormal
Open or short
Open or short
Measure the resistance between the terminals using a tester. (Surrounding temperature 20
:
)
Normal
1197±10"
Abnormal
Open or short
Solenoid valve coil <Bypass valve> (SV)
Measure the resistance between the terminals using a tester. (Winding temperature 20:)
Fan motor(MF1,MF2)
Normal
15.3±0.5"
1370±100"
0.72"
Measure the resistance between the terminals using a tester. (Winding temperature 20
:
)
Normal
Abnormal
Open or short
Relay connector
Abnormal
Open or short
Red — Black Black — White White — Red
Black
W
V U
W
V
U
White Red
PUHZ-RP8YHA PUHZ-RP10YHA
43
Page 44
13-7. HOW TO CHECK THE COMPONENTS
0
10
20
30
40
50
-20 -10 0 10 20 30 40 50 Temperature (:)
Resistance (K")
500
400
300
200
100
0
25
50 75 100 120
Temperature (:)
Resistance (K")
<Thermistor feature chart>
Low temperature thermistors
• Thermistor <Outdoor pipe> (TH3, TH32)
• Thermistor <Outdoor 2-phase pipe> (TH6)
• Thermistor <Outdoor> (TH7) Thermistor R0 = 15k' ±3%
B constant = 3480K ± 2%
1
R
t =15exp{3480(
0: 15k' 10: 9.6k' 20: 6.3k' 25: 5.2k'
High temperature thermistor
• Thermistor <Discharge> (TH4)
1
273+t – 273
30: 4.3k' 40: 3.0k'
)}
Thermistor R120 = 7.465k' ±2% B constant = 4057K ± 2%
t =7.465exp{4057(
R 20: 250k'
30: 160k' 40: 104k' 50: 70k' 60: 48k'
273+t – 393
70: 34k' 80: 24k' 90: 17.5k' 100: 13.0k' 110: 9.8k'
1
1
)}
44
Page 45
A
B
C
Open
Extra tightning (about 32 pulse)
Pulse number
500 pulse Opening a valve all the way
Close
Valve position (capacity)
LEV
M
1
6
[4
[4
[3
[2
[1
2
1
Red
Brown
Blue
Orange
Yellow
White
3
4
5
6
Connector LEV-A
LEV-B
DC12V
Outdoor controller board
Drive circuit
[3
[2
[1
3
2
5
4
Linear expansion valve
1
ON OFF OFF OFF
ON
ON OFF OFF
OFF
ON OFF OFF
OFF
ON ON
OFF
[1
Output
(Phase)
Output
[2 [3
[4
234
5678
OFF OFF
ON
OFF
OFF OFF
ON ON
OFF OFF OFF
ON
ON OFF OFF
ON
(1) Operation summary of the linear expansion valve.
• Linear expansion valve open/close through stepping motor after receiving the pulse signal from the outdoor controller circuit board.
• Valve position can be changed in proportion to the number of pulse signal. <Connection between the indoor controller circuit board and the linear expansion valve>
<Output pulse signal and the valve operation>
(2) Linear expansion valve operation
Opening a valve : 8 → 7 → 6 → 5 → 4 → 3 → 2 → 1 → 8
Closing a valve : 1 2 3 4 5 6 7 8 1
The output pulse shifts in above order.
1. When linear expansion valve operation stops, all output phase
become OFF.
When the switch is turned on, 700 pulse closing valve signal will
be sent till it goes to
A point in order to define the valve position.
(The pulse signal is being sent for about 20 seconds.) When the valve moves smoothly, there is no noise or vibration
occurring from the linear expansion valve : however, when the pulse number moves from B to A or when the valve is locked, more noise can be heard than normal situation. No noise is heard when the pulse number moves from B to A in case coil is burn out or motor is locked by open-phase.
Noise can be detected by placing the ear against the screw dri-
ver handle while putting the screw driver to the linear expansion valve.
45
Page 46
(3) How to attach and detach the coil of linear expansion valve
<Composition> Linear expansion valve is separable into the main body and the coil as shown in the diagram below.
Coil
Lead wire
<How to detach the coil>
Hold the lower part of the main body (shown as A) firmly so that the main body does not move and detach the coil by pulling it upward. Be sure to detach the coil holding main body firmly. Otherwise pipes can bend due to pressure.
Stopper
Main body
<How to attach the coil>
Hold the lower part of the main body (shown as A) firmly so that the main body does not move and attach the coil by inserting it downward into the main body. Then securely attach the coil stop­per to pipe B. (At this time, be careful that stress is not added to lead wire and main body is not wound by lead wire.) If the stop­per is not firmly attached to pipe B, coil may be detached from the main body and that can cause defective operation of linear expansion valve. To prevent piping stress, be sure to attach the coil holding the main body of linear expansion valve firmly. Otherwise pipe may break.
B
A
A
Be sure to attach the stopper to pipe B.
46
Page 47
13-8. EMERGENCY OPERATION
SW4
1 2 Cooling
Heating
ON
ON
OFF
CN31
Shorting pins
SW4
1 2 Cooling
Heating
ON
Inspected content Open/short of pipe thermistor (TH3, TH32/TH6) Indoor/outdoor unit communication error •Signal receiving error (Outdoor unit) Indoor/outdoor unit communication error •Transmitting error (Indoor unit) Communication error other than outdoor unit Communication error between outdoor controller board and M-NET board (Serial communication error)
Error code
U4
E8 E9
E0 ~ E7
Ed
When following abnormalities occur, emergency operation will be available.
(1) When the error codes shown below are displayed on outdoor unit or microcomputer for wired remote controller or indoor
unit has a failure, but no other problems are found, emergency operation will be available by setting the emergency opera­tion switch (SWE) to ON and short-circuiting the connector (CN31) on outdoor controller circuit board.
(2) Check the following items and cautions for emergency operation
1Make sure that there is no abnormality in outdoor unit other than the above abnormalities. (Emergency operation will
not be available when error code other than the above are indicated.)
2For emergency operation, it is necessary to set the emergency operation switch (SWE) on indoor controller circuit board.
Refer to the electrical wiring diagram of indoor unit for how to set the indoor unit.)
3During emergency operation, the air-conditioner will continuously be operated by supplying power and stopping it: It can
not be turned on or off by remote control, and temperature control is not possible.
4Do not perform emergency heating operation for an extended period of time: If the outdoor unit starts defrosting during
this period, cold air will blow out from the indoor unit.
5Do not perform emergency cooling operation for more than 10 hours: Neglecting this could result in freezing the heat
exchanger in indoor unit.
(3) Emergency operation procedure
1Turn the main power supply off. 2Turn on the emergency operation switch (SWE) on indoor controller circuit board. 3Set the shorting pins of emergency operation connector (CN31) on outdoor controller circuit board to ON. 4Use SW4-2 on outdoor controller circuit board to set the operation mode (cooling or heating). (SW4-1 is not used.)
5Turning the main power supply on will start the emergency operation.
(4) Releasing emergency operation
1Turn the main power supply off. 2Set the emergency operation switch (SWE) on indoor controller circuit board to OFF. 3Set the shorting pins of emergency operation connector (CN31) on outdoor controller
circuit board to OFF.
4Set SW4-2 on outdoor controller circuit board as shown in the right.
wIf shorting pins are not set on emergency operation connector (CN31), the setting remains OFF.
47
Page 48
13-9. TEST POINT DIAGRAM Outdoor controller circuit board
PUHZ-RP8YHA PUHZ-RP10YHA
CNS
(Indoor/outdoor unit
Communication power supply D71 Voltage developed across: 16-30V DC
CNAC
2 to 4: Power supply for outdoor controller circuit board (220V-240V AC) 1 to 3: Power supply for indoor/outdoor unit con­nection wire (220V-240V AC)
CN2
Connect to the outdoor power circuit board (CN2) 1-5: Power circuit board
Transmitting signal to the controller circuit board (0-5V DC) 2-5: Zero cross signal
(0-5V DC)
3-4: Not used 6-5: 15V DC 7-5: 15V DC
[5: – 1,2,6,7: + ]
21S4
Four-way valve
SV2
Replace valve
CN4
Transmission to outdoor power circuit board (CN4)
connecting wire)
+
LED1, LED2
Operating inspection indicators
CN332
Power supply for outdoor FAN controller circuit board (CN2)
12 : 18VDC [2: – 1: + ]
SW10
Model setup
CNDM
1 to 2: Input of silent mode 1 to 3: Input of external
contact point
CN31
Emergency operation
63H
High pressure switch
SW4
Test operation
CNDC
310V~340V DC
+
Connect from
}
outdoor noise fil-
ter circuit board
(CNDC)
63L
Low pressure switch
CN331
Control signal for outdoor FAN controller circuit board (CN6)
TH7
Thermistor<Outdoor>
TH6
Thermistor <Outdoor 2-phase pipe>
TH3
Thermistor <Outdoor pipe>
TH4
Thermistor <Discharge>
LEV-A
Linear expansion valve
CNVMNT
Connected to outdoor M-NET board
CNM
A-control service inspection kit
CNMNT
Connected to outdoor M-NET board
SW5
Function switch
SW8
Model setup Replacement operation
SW6
Model setup
SWP
Pump down
SW1
Forced defrost, detect history record reset, refrigerant address
48
Page 49
Outdoor Power circuit board PUHZ-RP8YHA PUHZ-RP10YHA
Brief Check of POWER MODULE W Usually, they are in a state of being short-circuited if they are broken. Measure the resistance in the following points (connectors, etc.). If they are short-circuited, it means that they are broken.
1. Check of POWER MODULE
1.Check of DIODE circuit L1 - P1 , L2 - P1 , L3 - P1 , L1 - N1 , L2 - N1 , L3 - N1
2.Check of IGBT circuit
P2 - U , P2 - V , P2 - W , N2 - U , N2 - V , N2 - W Note:The marks, L1 , L2 , L3 , N1 , N2 , P1 , P2 , U , V and W shown in the diagram above are not actually printed on the board.
CN5
Detection of primary current (Connect to the outdoor noise filter circuit board (CN5))
TAB connecter on X52A Connect to the RS resistor
CN4
Connect to the outdoor controller circuit board (CN4)
CN2 Connect to the outdoor controller circuit board (CN2) 1-5: Power circuit board
Transmitting
signal to the controller board (0-5V DC)
2-5: Zero cross signal (0-5V DC) 3-4: Not used 6-5: 15V DC
[ 5 : – 1, 2, 6, 7 : + ]
7-5: 15V DC
W
W
W
L3
L2
P1 L1
N2N1P2
TB-U, TB-V, TB-W
Connect to the compressor (MC) Voltage among phases: 10V-400V AC
TB-L1, TB-L2, TB-L3
Connect to the outdoor noise filter circuit board (LO1, LO2, LO3) 380V-415V AC
TB-N1
Connect to the smoothing capacitor
CB2
TB-P1
Connect to the DCL
TB-P2
Connect to the DCL and the smoothing capacitor
+
CB1
TB-C1
Connect to the smoothing capacitor
, CB2 +
CB1
49
CN1
282V DC
}
+
+
282V DC
}
Connect to the outdoor FAN controller circuit board (CN5)
565V DC
}
POWER MODULE
Page 50
Outdoor Noise filter circuit board PUHZ-RP8YHA PUHZ-RP10YHA
GD1
Connect to the earth
LI1, LI2, LI3, NI POWER SUPPLY
LI1-LI2/LI-LI3/LI3-LI1 : AC380/400/415V input LI1-NI/LI2-NI/LI3-NI : AC220/230/240V input (Connect to the terminal block (TB1))
CNAC1, CNAC2 AC220/230/240V
(Connect to the out­door controller circuit board (CNAC))
CNDC
(Connect to the out­door power circuit board (CNDC))
CNCT Primary current
(Connect to the out­door power circuit board (CN5))
LO1, LO2, LO3 POWER SUPPLY
LO1-LO2/LO2-LO3/LO3-LO1 : AC380/400/415V OUTPUT (Connect to the outdoor power circuit board (TB-L1, L2, L3))
50
Page 51
Outdoor Fan controller circuit board PUHZ-RP8YHA PUHZ-RP10YHA
U
TAB-U, TAB-V, TAB-W
(RED)
(WHITE)(BLACK)
Connect to the Fan motor (MF) Voltage among phases : 20V-380V AC
V
W
N
531
P
12
CN2
Power supply from outdoor controller circuit board (CN332)
1-2: 18V DC
[2: - , 1: + ]
CN5
+
282V DC
}
+
282V DC
}
-
Connect to the outdoor Power circuit board (CN1)
565V DC
}
Brief Check of IGBT W Usually, they are in a state of being short-circuited if they are broken. Measure the resistance in the following points (connectors, etc.). If they are short-circuited, it means that they are broken. Check of POWER MODULE
Check of IGBT circuit P - U , P - V , P - W , N - U , N - V , N - W
Note:The marks, U , V and W shown in the diagram above are not actually printed on the board.
12
CN6
Control signal from outdoor controller circuit board (CN331)
51
Page 52
Switch
Type
of
switch
Dip
switch
SW1
1 2
No.
Function Effective timing
Action by the switch operation
Compulsory defrosting Start Normal
When compressor is working in heating operation. w
Abnormal history clear
Refrigerant address setting
When power supply ON
Clear Normal off or operating
SW4
1
6
5
4
3
2
Test run Operating OFF
Under suspension
Test run mode setting Heating Cooling
ON OFF
123
0123
456ON123456ON123456ON123456
ON
123
4567
456ON123456ON123456ON123456
ON
123
891011
456ON123456ON123456ON123456
ON
123
12 13 14 15
456ON123456ON123456ON123456
ON
13-10. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS
1 2 3
4
3 4 5 6 1 2 3
ON OFF
No.
Function Effective timing
Action by the switch operation
No function
Power failure
automatic recovery w1
No function No function
No function No function No function No function
Use of existing pipe
Replacement operation
No function Pump down
Switch
SW5
SW7
Dip
switch
Push
switch
SW8
SWP
Type of
Switch
Auto recovery
— —
— — — —
Used or RP10Y
w3
Start
Start
No auto recovery
— —
— — — —
Not used
Normal
Normal
When power supply ON
— —
Always
— — — —
Always
Under suspension
Under suspension
Switch to “Low-level Sound Priority Mode”
w2
1
2
1
OFF
OFF
Mode 1 Mode 2 Mode 3
OFF
ON
ON
ON
2 Cooling
Regulate max Hz to spec.
Regulate max Hz to spec.
Regulate max Hz to spec.
Regulate max Hz to spec.
Only TH7 } 30°C regulate max Hz to spec.
No regulation
Heating
Low-level Sound Priority Mode
(1) Function of switches
Compulsory defrosting should be done as follows.
1Change the DIP SW1-1 on the outdoor controller circuit board from OFF to ON. 2Compulsory defrosting will start by the above operation 1 if these conditions written below are satisfied.
• Heat mode setting
• 10 minutes have passed since compressor started operating or previous compulsory defrosting finished.
• Pipe temperature is less than or equal to 8:. 3Compulsory defrosting will finish if certain conditions are satisfied. wCompulsory defrosting can be done if above conditions are satisfied when DIP SW1-1 is changed from OFF to ON.
After DIP SW1-1 is changed from OFF to ON, there is no problem if DIP SW1-1 is left ON or changed to OFF again. This
depends on the service conditions.
w1 Power failure automatic recovery’ can be set by either remote controller or this DIP SW. If one of them is set to ON,
‘Auto recovery’ activates. Please set “Auto recovery” basically by remote controller because all units have not DIP SW.
w2 SW7-1,2 to “Low-level Sound Priority Mode” available in “Low-level Sound Priority Mode” mode only. w3 RP10YHA is always ON.
Please refer to mode 01 in the table on 13-11.
52
Page 53
(2) Function of connectors
CN31
Types Connector Function Effective timing
Connector
SW6
SW8
SW10
SW6-1 SW6-2 SW6-3
SW6-4 SW6-5 SW6-6
SW8-1 SW10-1 SW10-2
Start
Short Open
Action by the switch operation
Model select
Emergency operation
When power supply ON
Normal
W 1
W 1
W 1 As for SW8, see also 13-10 (1) Function of switches, as SW8 sets the replacement operation as well.
53
Page 54
Special function
(a) Low-level sound priority mode (Local wiring)
Unit enters into Low-level sound priority mode by SW7-1, 2 and external signal input setting. Inputting external signals to the outdoor unit decreases the outdoor unit operation sound 3 to 4 dB lower than that of usual. Adding a commercial timer or on-off switch contactor setting to the CNDM connector which is optional contactor for Demand input located on the outdoor controller circuit board enables to control compressor operation frequency. In Low-level sound priority mode, the maximum outdoor fan steps is regulated to 8 and the maximum operation frequency of the compressor is regulated to specified range in cool mode. In heating mode, the maximum compressor operation frequency is regulated to specified range. W The performance is depends on the load of conditioned air of the room.
How to wiring
<Low-level sound priority mode circuit>
Insulate this point securely as this is not used.
Purchased at local
Relay supply
~
SW1
X
X
SW1 : Switch X : Relay (Contact spec. : DC1mA)
Max. 10 m including local wiring
Adaptor for external signal input (PAC-SC36NA)
Red
3
Brown
Orange
2 1
Outdoor unit controller board
3 2 1
CNDM
<Outdoor unit controller board>
CNDM
1) Make the circuit as shown above with Adaptor for external signal input(PAC-SC36NA).
2) Turn SW1 to on for Low-level sound priority mode. Turn SW1 to off to release Low-level sound priority mode and normal operation.
(b) On demand control (Local wiring)
Demand control is available by external input. In this mode, the outdoor unit stops and indoor unit operates with fan mode. W The setting of SW-7 is not required for the demand control.
How to wiring Basically, the wiring is the same. Connect an SW 1 which is procured at field to the between Orange and Red(1 and 3) of the Adaptor for external signal
input(PAC-SC36NA), and insulate the tip of the brown lead wire.
54
Page 55
<Display function of inspection for outdoor unit>
F3 F5 F9
E6 E7
E0 E3 E4 E5
EF
Ed
A0~A8
[Display] (1)Normal condition
(2)Abnormal condition
Unit condition
Outdoor controller circuit board A-Control Service Tool
LED1 (Green) LED2 (Red) Error code
When the power is turned on When unit stops When compressor is warming up When unit operates
Lighted Lighted Lighted Lighted
Lighted
Not lighted
Indication of the display
Alternately blinking display
Operation mode
Not lighted
Lighted
00, etc. 08, etc.
C5, H7 etc.
Indication Error
Error code
w1
Outdoor controller circuit board
Contents Inspection method
LED1 (Green) LED2 (Red) 1 blinking 2 blinking
2 blinking 1 blinking
2 blinking
3 blinking
4 blinking
5 blinking
Connector(63L) is open.
Connector(63H) is open.
2 connectors are open.
Startup time over
Error code is not defined.
Mis-wiring of indoor/outdoor unit conne­cting wire, excessive number of indoor units (5 units or more)
Mis-wiring of indoor/outdoor unit co­nnecting wire (converse wiring or di­sconnection)
Indoor/outdoor unit communication error (signal receiving error) is detected by in­door unit.
Indoor/outdoor unit communication error (transmitting error) is detected by indoor unit.
Indoor/outdoor unit communication error (signal receiving error) is detected by outdoor unit.
Indoor/outdoor unit communication error (transmitting error) is detected by outdoor unit.
Remote controller signal receiving error is detected by remote controller.
Remote controller transmitting error is detected by remote controller.
Remote controller signal receiving error is detected by indoor unit.
Remote controller transmitting error is detected by indoor unit.
Serial communication error <Communication between outdoor controller board and outdoor power board> <Communication between outdoor controller board and M-NET p.c. board>
Communication error of high prior signal(M-NET)
W1.Remote controller displays error code. W2.Refer to service manual for indoor unit.
1
Check if indoor/outdoor connecting wire is connected correctly.
2
Check if 5 or more indoor units are connected to outdoor unit. 3Check if noise entered into indoor/outdoor connecting wire or power supply.
4Re-check error by turning off power, and on again.
1
Check if connector (63L or 63H) on the outdoor controller board is not disconnected.
2
Check continuity of pressure switch (63L or 63H) by tester.
1
Check if connector (CN4) on outdoor controller circuit board and outdoor power circuit board is not disconnected.
2
Check if there is poor connection of connector on outdoor controller circuit board(CNMNT and CNVMNT).
3
Check M-NET communication signal.
1Check if remote controller is MA remote controller(PAR-20MAA). 2Check if noise entered into transmission wire of remote controller. 3Check if noise entered into indoor/outdoor connecting wire. 4Re-check error by turning off power, and on again.
1Check if connecting wire of indoor unit or remote controller
is connected correctly. 2Check if noise entered into transmission wire of remote controller.
3Re-check error by turning off power, and on again.
1
Check if indoor/outdoor connecting wire is connected correctly.
2
Check if noise entered into indoor/outdoor connecting wire or power supply.
3
Check if noise entered into indoor/outdoor controller circuit board.
4
Re-check error by turning off power, and on again.
P.32 P.32 P.32 P.33
P.33 P.33
w2 w2
P.37 P.37 P.37 P.37
w2 w2
P.37
P.37
P.38~
P.41
Detailed
reference
page
The blinking patterns of both LED1(green) and LED2(red) indicate the types of abnormality when it occurs. Types of abnormality can be indicated in details by connecting an optional part ‘A-Control Service Tool (PAC-SK52ST)’ to connector CNM on outdoor controller circuit board.
55
Page 56
Operation LED1 (Red)
Lighted
Normal (Stop)
Normal (Operating)
Fan stops. Controller board is outputting waveform for fan driving.
Contents
Operation
LED1 (Red)
Importance
2 blinks 1
26 blinks
Abnormal is detected
Abnormality of bus voltage: Abnormal if voltage is less than 200V or more than 760V. Abnormality of overcurrent: Abnormal if current value of DC bus in over the cut-off point.
Meaning of error code and detection method
Remark
This LED is not
used for service.
U2
U1
UF UP UH
U6
U3
U4
U5
U9
P1
P2
P9
P4
P5
P6
P8
Indication Error
Error code
w1
Outdoor controller circuit board
Contents Inspection method
LED1 (Green)
LED2 (Red)
3 blinking 1 blinking
2 blinking
W1 Error code displayed on remote controller W2 Refer to service manual for indoor unit.
4 blinking
5 blinking
6 blinking
7 blinking
1 blinking
2 blinking
3 blinking
4 blinking
4 blinking
Abnormality of shell thermostat and discharging temperature (TH4)
1Check if stop valves are open. 2Check if connectors (TH4, LEV-A) on outdoor controller circuit board are not
disconnected.
3Check if unit fills with specified amount of refrigerant. 4Measure resistance values among terminals on indoor valve and outdoor linear
expansion valve using a tester.
Abnormal high pressure (High pressure switch 63H worked.)
1Check if indoor/outdoor units have a short cycle on their air ducts. 2Check if connector (63H) on outdoor controller circuit board is not disconnected. 3Check if heat exchanger and filter is not dirty. 4Measure resistance values among terminals on linear expansion valve using a
tester.
1Check if stop valves are open. 2Check looseness, disconnection, and converse connection of compressor wiring. 3Measure resistance values among terminals on compressor using a tester. 4Check if outdoor unit has a short cycle on its air duct.
Compressor over current breaking (Start-up locked) Compressor over current breaking Abnormality of current sensor (P.B.) Abnormality of power module Open/short of discharge thermistor (TH4)
Open/short of outdoor ther­mistor (TH8)
Open/short of outdoor thermistors (TH3, TH32, TH6, TH7 and TH8)
1
Check if connectors (TH3, TH32, TH4, TH6 and TH7) on outdoor controller circuit board
and connector (CN3) on outdoor power circuit board are not disconnected.
2
Measure resistance value of outdoor thermistors.
Abnormality of heat sink temperature
1Check if indoor/outdoor units have a short cycle on their air ducts. 2Measure resistance value of outdoor thermistor(TH8).
Abnormality of voltage 1Check looseness, disconnection, and converse connection of compressor wiring.
2Measure resistance value among terminals on compressor using a tester. 3Check if power supply voltage decreases. 4Check CN5 wiring on the outdoor power circuit board or noise filter circuit board.
Abnormality of room temperature thermistor (TH1) Abnormality of pipe temperature thermistor /Liquid (TH2) Abnormality of pipe temperature thermistor/Condenser-Evaporator
1Check if connectors (CN20, CN21 and CN29) on indoor controller circuit board are not disconnected. 2Measure resistance value of indoor thermistors.
Abnormality of drain sensor (DS) Indoor drain overflow protection
1Check if connector (CN31) on indoor controller circuit board is not disconnected. 2Measure resistance value of indoor thermistors. 3Measure resistance value among terminals on drain-up machine using a tester. 4Check if drain-up machine works. 5Check drain function.
Freezing (cooling)/overheating (heating) protection
1Check if indoor unit has a short cycle on its air duct. 2Check if heat exchanger and filter is not dirty. 3Measure resistance value on indoor and outdoor fan motors. 4Check if the inside of refrigerant piping is not clogged.
Abnormality of pipe temperature
1Check if indoor thermistors (TH2 and TH5) are not disconnected from holder. 2Check if stop valve is open. 3Check converse connection of extension pipe. (on plural units connection) 4Check if indoor/outdoor connecting wire is connected correctly. (on plural units
connection)
P.34
P.34
P.36 P.36 P.36 P.35 P.35 P.35
P.35 P.36
W2 W2 W2
W2
W2
W2
Detailed
reference
page
LED indications of fan operating condition (LED1 on outdoor Fan controller circuit board)
56
Page 57
<Outdoor unit operation monitor function>
1ON23456
1ON23456
1 second
interval
Display Operation Model
The tens digit : Operation mode
The ones digit : Relay output
O
C H
d
Display
0 1 2 3 4 5 6 7 8 A
Compressor
Warming-up Compressor
4-way valve
Solenoid valve
— — —
— ON ON ON ON
— — — — — — —
— ON ON
— ON ON
— ON ON
— ON
ON
ON
ON
ON
— —
OFF / FAN
COOLING / DRY w
HEATING
DEFROSTING
Display
Contents to be inspected (When power is turned on) F3 F5 F9
E8 E9 EA Eb
Ec
E0~E7
63L connector(red) is open. 63H connector(yellow) is open. 2 connectors (63H/63L) are open. Indoor/outdoor communication error (Signal receiving error) (Outdoor unit) Indoor/outdoor communication error (Transmitting error) (Outdoor unit) Mis-wiring of indoor/outdoor unit connecting wire, excessive number of indoor units (5 units or more) Mis-wiring of indoor/outdoor unit connecting wire(converse wiring or disconnection) Startup time over Communication error except for outdoor unit
Display
Inspection unit 0 1 2 3 4
Outdoor unit
Indoor unit 1
Indoor unit 2
Indoor unit 3
Indoor unit 4
Display
Contents to be inspected (During operation) U1 U2 U3 U4
U5 U6
U7 UF
UH
UL UP
P1~P8 A0~A7
Abnormal high pressure (63H worked)
Abnormal high discharging temperature, shortage of refrigerant
Open/short circuit of discharging thermistor(TH4)
Open/short of outdoor unit thermistors(TH3, TH32, TH6, TH7 and TH8)
Abnormal temperature of heat sink
Compressor overcurrent interruption (When Comp. locked)
Abnormality of power module
Abnormality of super heat due to low discharge temperature
Compressor overcurrent interruption (When Comp. locked)
Current sensor error
Abnormal low pressure (63L worked)
Compressor overcurrent interruption
Abnormality of indoor units
Communication error of high-prior signal (M-NET)
[When option part ‘A-Control Service Tool(PAC-SK52ST)’ is connected to outdoor controller circuit board(CNM)]
Digital indicator LED1 displays 2 digit number or code to inform operation condition and the meaning of error code by control­ling DIP SW2 on ‘A-Control Service Tool’.
Operation indicator SW2 : Indicator change of self diagnosis
SW2 setting
Display detail
Explanation for display Unit
<Digital indicator LED1 working details>
(Be sure the 1 to 6 in the SW2 are set to OFF.) (1) Display when the power supply ON.
When the power supply ON, blinking displays by turns. Wait for 4 minutes at the longest.
(2) When the display lights. (Normal operation)
1Operation mode display.
(Lighting)
LED1
2Display during error postponement
Postponement code is displayed when compressor stops due to the work of protection device. Postponement code is displayed while error is being postponed.
(3) When the display blinks
Inspection code is displayed when compressor stops due to the work of protection devices.
SW2
(Initial setting)
57
Page 58
SW2 setting
1ON23456
1ON23456
1ON23456
1ON23456
1ON23456
1ON23456 1ON23456
1ON23456
1ON23456
10
1ON23456
1
05
4
25
2
45
1
25
1
50
1ON23456
Display detail
Pipe temperature / Liquid(TH3) – 40~90
Explanation for display Unit
– 40~90 (When the coil thermistor detects 0: or below, “–”
and temperature are displayed by turns.)
(Example)
When –10:; 0.5 secs. 0.5 secs. 2 secs.
:
Discharge temperature (TH4) 3~217
Output step of outdoor FAN 0~10
The number of ON / OFF times of compressor 0~9999
Compressor integrating operation times 0~9999
Compressor operating current. 0~50
3~217 (When the discharge thermistor detects 100: or
more, hundreds digit, tens digit and ones digit are displayed by turns.)
(Example)
When 105:; 0.5 secs. 0.5 secs. 2 secs.
0~10
0~9999 (When the number of times is 100 or more,
hundreds digit, tens digit and ones digit are displayed by turns.)
(Example) When 42500 times (425 100 times);
0.5 secs. 0.5 secs. 2 secs.
0~9999 (When it is 100 hours or more, hundreds digit, tens
digit and ones digit are displayed by turns.)
(Example) When 2450 hours (245 10 hours);
0.5 secs. 0.5 secs. 2 secs.
0~50 wOmit the figures after the decimal fractions.
:
Step
100 times
10 hours
A
Compressor operating frequency 0~225
0~255 (When it is 100Hz or more, hundreds digit, tens
digit and ones digit are displayed by turns.
(Example)
When 125Hz; 0.5 secs. 0.5 secs. 2 secs.
LEV-Aopening pulse 0~480
0~480 (When it is 100 pulse or more, hundreds digit, tens
digit and ones digit are displayed by turns.
(Example)
When 150 pulse; 0.5 secs. 0.5 secs. 2 secs.
Error postponement code history (1) of outdoor unit
Postponement code display Blinking: During postponement Lighting: Cancellation of postponement “00” is displayed in case of no postponement.
Operation mode on error occurring Operation mode of when operation stops due to
error is displayed by setting SW2 like below.
(SW2)
58
Hz
Pulse
Code
display
Code
display
Page 59
SW2 setting
1ON23456
1ON23456
1ON23456 1ON23456
1ON23456
1ON23456
15
1302
45
1
05
Display detail
Pipe temperature / Liquid(TH3) on error occurring – 40~90
Explanation for display Unit
– 40~90 (When the coil thermistor detects 0: or below, “–”
and temperature are displayed by turns.)
(Example)
When –15:; 0.5 secs. 0.5 secs. 2 secs.
:
Compressor temperature (TH4) or discharge temperature (TH4) on error occurring 3~217
Compressor operating current on error occurring 0~20
Error code history (1) (latest) Alternate display of abnormal unit number and code
Error code history (2) Alternate display of error unit number and code
3~217 (When the temperature is 100: or more, the
hundreds digit, tens digit and ones digit are displayed by turns.)
(Example)
When 130:; 0.5 secs. 0.5 secs. 2 secs.
0~20
When no error history, “ 0 ” and “– –” are displayed by turns.
When no error history, “ 0 ” and “– –” are displayed by turns.
:
A
Code
display
Code
display
Thermostat ON time 0~999
Test run elapsed time 0~120
0~999 (When it is 100 minutes or more, the hundreds digit,
tens digit and ones digit are displayed by turns.)
(Example)
When 245 minutes; 0.5 secs. 0.5 secs. 2 secs.
0~120 (When it is 100 minutes or more, the hundreds digit,
tens digit and ones digit are displayed by turns.)
(Example)
When 105 minutes; 0.5 secs. 0.5 secs. 2 secs.
59
Minute
Minute
Page 60
SW2 setting
1ON23456
1ON23456
1ON23456
1ON23456
1ON23456
Capacity
RP8Y RP10Y
40 50
Code
Setting details
• The tens digit (Total display for applied setting)
• The ones digit
H·P /
Cooling only
Single phase / Three phase
Display details
0 : H·P 1 : Cooling only 0 :
Single phase
2 :
Three phase
Setting details
Defrosting switch
Display details
0 : Normal 1 : For high humidity
1ON23456
1ON23456
1ON23456
Display detail
The number of connected indoor units
Explanation for display
0~4 (The number of connected indoor units are dis­played.)
Unit
Unit
Capacity setting display
Outdoor unit setting information
Indoor pipe temperature / Liquid (TH2(1)) Indoor 1 – 39~88
Displayed as an outdoor capacity code.
(Example) When heat pump,three phase and
defrosting (normal) are set up, “20” is displayed.
– 39~88 (When the temperature is 0: or less, “–” and
temperature are displayed by turns.)
Code
display
Code
display
:
Indoor pipe temperature / Cond. / Eva. (TH5(1)) Indoor 1 – 39~88
Indoor pipe temperature / Liquid (TH2(2)) Indoor 2 – 39~88
Indoor pipe temperature / Cond. / Eva. (TH5(2)) Indoor 2 – 39~88
Indoor room temperature (TH1) 8~39
– 39~88 (When the temperature is 0: or less, “–” and
temperature are displayed by turns.)
– 39~88 (When the temperature is 0: or less, “–” and
temperature are displayed by turns.)
– 39~88 (When the temperature is 0: or less, “–” and
temperature are displayed by turns.)
8~39
60
:
:
:
:
Page 61
1ON23456
1ON23456
1ON23456
1ON23456
SW2 setting
1ON23456
1ON23456
1ON23456
1ON23456
Display detail
Indoor setting temperature 17~30
Explanation for display Unit
17~30
:
1ON23456
Outdoor pipe temperature / Cond./ Eva. (TH6) – 39~88
Outdoor outside temperature (TH7) – 39~88
Outdoor internal heat sink tempera­ture (TH8) – 40~200
Discharge super heat. SHd 0~255
Cooling = TH4-TH6 Heating = TH4-TH5
Sub cool. SC 0~130
Cooling = TH6-TH3 Heating = TH5-TH4
– 39~88 (When the temperature is 0: or less, “–” and
temperature are displayed by turns.)
– 39~88 (When the temperature is 0: or less, “–” and
temperature are displayed by turns.)
– 40~200 (When the temperature is 0: or less, “–” and
temperature are displayed by turns.)
(When the thermistor detects 100: or more,
hundreds digit, tens digit and ones digit are displayed by turns.)
0~255 (When the temperature is 100°C or more, hundreds
digit, tens digit and ones digit are displayed by turns.)
0~130 (When the temperature is 100°C or more, hundreds digit, tens digit and ones digit are displayed by turns.)
:
:
:
°C
°C
Input current of outdoor unit
Targeted operation frequency 0~255
DC bus voltage 360~760
0~500 (When it is 100 or more, hundreds digit, tens digit
and ones digit are displayed by turns.)
0~255 (When it is 100Hz or more, hundreds digit, tens
digit and ones digit are displayed by turns.)
360~760 (When it is 100V or more, hundreds digit, tens
digit and ones digit are displayed by turns.)
0.1 A
Hz
V
61
Page 62
SW2 setting
1ON23456
1ON23456
1ON23456
1ON23456
1ON23456
1ON23456
1ON23456
00125
1
Display detail
Capacity save 0~255 When air conditioner is connected to M-NET and capacity save mode is demanded, “0”~”100” is displayed.
When there is no setting of capacity save “100” is displayed.
Error postponement code history (2) of outdoor unit
Explanation for display Unit
0~100 (When the capacity is 100% hundreds digit, tens digit and ones digit are displayed by turns.) (Example)
When 100%; 0.5 secs. 0.5 secs. 2 secs.
Postponement code display Blinking: During postponement Lighting: Cancellation of postponement “00” is displayed in case of no postponement.
%
Code
display
Error postponement code history (3) of outdoor unit
Error code history (3) (Oldest) Alternate display of abnormal unit num­ber and code.
Error thermistor display
When there is no error thermistor, “–“ is displayed.
Operation frequency on error occurring 0~255
Postponement code display Blinking: During postponement Lighting: Cancellation of postponement “00” is displayed in case of no postponement.
When no error history, “0” and “– –“ are displayed by turns.
3: Outdoor pipe temperature /Liquid (TH3, TH32) 6: Outdoor pipe temperature /Cond./Eva. (TH6) 7: Outdoor outside temperature (TH7) 8: Outdoor heat sink (TH8)
0~255 (When it is 100Hz or more, hundreds digit, tens digit and ones digit are displayed by turns.) (Example)
When 125Hz; 0.5 secs. 0.5 secs. 2 secs.
Code
display
Code
display
Code
display
Hz
Fan step on error occurring 0~10
0~10
Step
62
Page 63
SW2 setting
1ON23456
30
1
1ON23456
1ON23456
1ON23456
1ON23456
1ON23456
1ON23456
15
15
15
15
Display detail
LEV-Aopening pulse on error occurring 0~480
Explanation for display Unit
0~480 (When it is 100 pulse or more, hundreds digit, tens
digit and ones digit are displayed by turns.)
(Example)
When 130 pulse; 0.5 secs. 0.5 secs. 2 secs.
Pulse
Indoor room temperature (TH1) on error occurring 8~39
Indoor pipe temperature / Liquid (TH2) on error occurring – 39~88
Indoor pipe temperature / Cond./ Eva. (TH5) on error occurring – 39~88
Outdoor pipe temperature / Cond./ Eva. (TH6) on error occurring – 39~88
8~39
– 39~88 (When the temperature is 0°C or less, “–” and
temperature are displayed by turns.)
(Example)
When -15°C; 0.5 secs. 0.5 secs. 2 secs.
– 39~88 (When the temperature is 0°C or less, “–” and
temperature are displayed by turns.)
(Example)
When -15°C; 0.5 secs. 0.5 secs. 2 secs.
– 39~88 (When the temperature is 0°C or less, “–” and
temperature are displayed by turns.)
(Example)
When -15°C; 0.5 secs. 0.5 secs. 2 secs.
:
:
:
:
Outdoor outside temperature (TH7) on error occurring – 39~88
Outdoor heat sink temperature (TH8) on error occurring – 40~200
63
– 39~88 (When the temperature is 0°C or less, “–” and
temperature are displayed by turns.)
(Example)
When -15°C; 0.5 secs. 0.5 secs. 2 secs.
– 40~200 (When the temperature is 0°C or less, “–” and
temperature are displayed by turns.)
(When the temperature is 100°C or more, hundreds
digit, tens digit and ones digit are displayed by turns.)
:
:
Page 64
SW2 setting
50
1
1ON23456
1ON23456 1ON23456
1ON23456
1ON23456
15115
4
1ON23456
Display
Description
Normal Overvoltage error Undervoltage error T phase interruption error Abnormal power synchronous signal
00 01 02 04 08
Display detail
Discharge super heat on error occurring SHd 0~255
Cooling = TH4-TH6 Heating = TH4-Th5
Explanation for display Unit
0~255 (When the temperature is 100°C or more, hundreds
digit, tens digit and ones digit are displayed by turns.)
(Example)
When 150°C; 0.5 secs. 0.5 secs. 2 secs.
:
Sub cool on error occurring. SC 0~130
Cooling = TH6-TH3 Heating = TH5-TH2
Thermostat-on time until error stops 0~999
Indoor pipe temperature / Liquid (TH2 (3)) Indoor 3 – 39~88
Indoor pipe temperature / Cond./ Eva. (TH5 (3)) Indoor 3 – 39~88
0~130 (When the temperature is 100°C or more, hundreds
digit, tens digit and ones digit are displayed by turns.)
(Example)
When 115°C; 0.5 secs. 0.5 secs. 2 secs.
0~999 (When it is 100 minutes or more, hundreds digit, tens
digit and ones digit are displayed by turns.)
(Example)
When 415 minutes; 0.5 secs. 0.5 secs. 2 secs.
– 39~88 (When the temperature is 0°C or less, “–” and
temperature are displayed by turns.)
– 39~88 (When the temperature is 0°C or less, “–” and
temperature are displayed by turns.)
When there is no indoor unit, “00” is displayed.
:
Minute
:
:
Suspensive U9 error detail
(1) Display timing
1 During the error suspensive period, the latest
suspensive error is displayed according to the table below.
2 When U9 error is determined, the latest error
status is displayed according to the table below, and the display is cleared (=00) by the error clearing condition.
(2) Error display
W Display examples for multiple errors:
Overvoltage (01) + Undervoltage (02) =03 Undervoltage (02) + Power-sync signal error (08) = 0A
64
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SW2 setting
1ON23456
Display
Compressor operating frequency control
Display
Compressor operating frequency control
Primary current control Secondary current control
1 2
1
4 8
2
The tens digit
The ones digit
(In this digit, the total number of
activated control is displayed.)
Preventive control for excessive temp­erature rise of discharge temperature Preventive control for excessive temp­erature rise of condensing temperature Frosting preventing control
Preventive control for excessive temp­erature rise of radiator panel
(Example) The following controls are activated.
• Primary current control
• Preventive control for excessive tempe- rature rise of condensing temperature
• Preventive control for excessive tempe­ rature rise of radiator panel
1a
LED
10
1ON23456 1ON23456
1ON23456
1ON23456
Display detail
Controlling status of compressor operating frequency
Explanation for display Unit
The following code will be a help to know the operating status of unit.
Code
display
Liquid pipe temperature (TH32) – 40~90
Indoor pipe temperature / Liquid (TH2(4)) Indoor 4 – 39~88
Indoor pipe temperature / (Cond./Eva.) (TH5(4)) Indoor 4 – 39~88
Indication for performing status of unit replacement operation
•The ones digit Every time the unit replacement oper­ation is performed by using SW8-2 for 2 hours, the number "1" is displayed. However, the operation less than 2 hours is not counted, and the number "0" is displayed.
•The tens digit When specified time of unit replace­ment operation has been performed by using outdoor unit, the number "1" is displayed. (The number gets back to "0" when performing replacement operation by using SW8-2.)
– 40~90 (When the temperature is 0°C or less, “–” and
temperature are displayed by turns.)
(Example)
When –10°C; 0.5 secs. 0.5 secs. 2 secs.
– 39~88 (When the temperature is 0°C or less, “–” and
temperature are displayed by turns.)
– 39~88 (When the temperature is 0°C or less, “–” and
temperature are displayed by turns.)
•The ones digit 1: Performed 0: Not performed
•The tens digit 1: Specified time of replacement operation
completed
0: Now performing replacement operation
65
:
:
:
Page 66
Function
Settings
Mode No.
Setting No.
Remarks
Filter sign
Fan speed
No. of air outlets
Installed options (high­performance filter) Horizontal vane setting
Energy saving air flow (Heating mode) Direct add-on type humidifier (Only for power-cassette) Swing
Set temperature in heating mode 4deg-up
Fan speed when the heating thermostat is OFF
Quiet operation mode of power cassette Fan speed when the cooling thermostat is OFF Detection of abnormality of the pipe temperature (P8)
100Hr 2500Hr No filter sign indicator standard High ceiling 1 High ceiling 2 4 directions 3 directions 2 directions Not supported Supported No vanes Equipped with vane (No.1 setting) Equipped with vane (No.2 setting) Disabled Enabled Not supported Supported
Not available Available Available Not available Extra low Low (4-speed model) Low (2-speed model) Set fan speed Normal Quiet Set fan speed Stop Available Not available
1 2 3 1 2 3 1 2 3 1 2 1 2 3 1 2 1
2 1
2 1 2 1 2 3 1 2 1 2 1 2
— — — — — — — — — — — — — —
— —
— —
07
08
09
10
11
12
13
23 24
25
26 27 28
4-way Cassette PLA-AA
(power­cassette)
PLA-AA.UK (power­cassette)
Ceiling concealed
— — — — — — — — — — — — — —
— —
— — — — —
Initial setting(when sent from the factory)
–: Not available
PEAD-EA PEAD-GA
PEH-MYA
— — — — — — — — — — — — — —
— —
Ceiling Concealed
Ceiling Concealed
Wall Mounted
— — — — — — — — — — — — — —
— —
PKA-FAL PKA-GAL
— — —
— —
— —
Ceiling Suspended
PCA-GA
Function
Settings
Mode No.
Setting No.
Initial setting
(when sent from the factory)
Remarks
Power failure automatic recovery Indoor temperature detecting
LOSSNAY connectivity
Power supply voltage Auto operating mode Frost prevention temperature Humidifier control
Change of defrosting control
OFF ON Operating indoor units (The average is considered as indoor temperature.) Indoor unit with remote controller Remote controller's internal sensor Not supported Supported (indoor unit not equipped with outdoor air intake) Supported (indoor unit equipped with outdoor air intake) 240V 220V,230V Auto energy-saving operation ON Auto energy-saving operation OFF 2: (Normal) 3: When the compressor operates, the humidifier also operates. When the fan operates, the humidifier also operates. Standard For high humidity
1 2
1 2
3 1 2 3 1 2 1 2 1 2 1 2 1 2
01
02
03
04 05 15 16 17
The setting is applied to all the units in the same refrigerant system.
13-11. SELECTING FUNCTIONS USING THE REMOTE CONTROLLER
Each function can be set according to necessity using the remote controller. The setting of function for each unit can only be done by the remote controller. Select function available from the table 1.
<Table 1> Function selections
(1) Functions available when setting the unit number to 00 (Select 00 referring to 4 setting the indoor unit number on 13-11-1.)
W1 The functions below are available only when the wired remote controller is used.The functions are not available for floor
standing models.
(2) Functions available when setting the unit number to 01-03 or AL (07 in case of wireless remote controller)
• When setting functions for an indoor unit in an independent system, set the unit number to 01 referring to 4 setting the indoor unit number on 13-11-1.
• When setting functions for a simultaneous- Twin Triple indoor unit system, set the unit number to 01 to 03 for each indoor
unit in case of selecting different functions for each unit referring to 4 setting the indoor unit number on 13-11-1.
• When setting the same functions for an entire simultaneous Twin Triple-indoor unit system, set refrigerant address to AL
(07 in case of wireless remote controller) referring to 4 setting the indoor unit number on 13-11-1.
66
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13-11-1. Selecting functions using the wired remote controller
PAR-20MAA
ON/OFF
CENTRALLY CONTROLLED
ERROR CODE
CLOCK
ON OFF
˚C
CHECK
CHECK MODE
FILTER
TEST RUN FUNCTION
˚C
1Hr.
NOT AVAILABLE
STAND BY DEFROST
FILTER
CHECK TEST
TEMP.
TIMER SET
F E
G
CD
A
J
B
123
4
[Flow of function selection procedure] The flow of function selection procedure is shown below. The flow is described in case of setting indoor temperature detecting shown in table 1 on the preceding page. Refer to procedure 1 to 0 when actually setting functions.
Selecting functions using the wired remote controller
1 Check the function selection setting. 2 Switch to function setting mode. w
(Press A and B at the same time with the remote controller stopped.)
w For modes 15 and higher,
press J and B at the same time.
3 Specify refrigerant address "00" (outdoor unit) (This operation is not necessary for single refrigerant system.) 4 Specify unit No. "00". (indoor unit)
(Use C and D.)
5 Enter the setting.
(Press E.)
6
Select mode No "02"
(Specified indoor unit: FAN operation)
NO
Change refrigerant address unit No.
(room temperature detection position).
7
Select setting No. "03" (remote controller fixed). (Use
F
and G.)
8 Enter the setting.
(Press E.)
Finished
NO
YES
10
Function selection end screen
(Press A and B at the same time.)
Wired type
1 Mode number 2 Setting number 3 Refrigerant address 4 Unit number
YES
9
For mode 01 to 13, press Aand B at the same time and for mode 15 to 28, press B and J to go to function select mode.
[Operating instructions]
11
Checking the function settings
If you change the setting in the function setting procedure, the contents of setting will be changed for the designated mode. Change the setting after recording all the previous setting into the checklist of table 1 by following steps 2 to 7. In addition,
read the installation manual packed with indoor units to be informed of initial setting.
22
Turning off the remote controller
Press the
A FILTER and B TEST RUN buttons simultaneous-
ly and hold them for at least 2 seconds. (For modes 15 and higher, press J and B simultaneously for
33
Setting the refrigerant address No. of outdoor unit
Press C TIMER SET button to select the refrigerant address from No.00 to No.15. (Set the refrigerant address to
No.00 in case of single refrigerant grouping system.) at least 2 seconds.) FUNCTION will start to flash. After a while, the refrigerant address display will start to flash .
3
FUNCTION
FUNCTION
W If the unit stops two seconds after the FUNCTION display starts to flash or [88] starts to flash in the room temperature dis­play, a transmission problem may have occurred. Check to see if there are some sources of transmission interference (noise) nearby.
If you make a mistake during any points of this procedure, you can quit the function setting by pressing 0 then return to step 2.
67
Page 68
44
FUNCTION
1
(a)
(c)
(h)
(g)
(b)
(f)
(d) (e)
3 00 refrigerant address
FUNCTION
1
FUNCTION
FUNCTION
2
2
Setting the indoor unit number
Press D(CLOCK ON OFF) and [--] will start to flash in the unit number display (4) .
4
Press C (TIMER SET) button to select the unit number from 00, 01, 02, 03, 04, and AL.
FUNCTION
Set the unit number to 00 if the mode such as power failure automatic recovery, indoor temperature detecting or
LOSSNAY connectivity is desired to be selected.
Select the unit number from 01 to 04 if the function setting is desired to be done for each of them individually.
Set the unit number to AL if the function setting is desired to be done for all of units simultaneously.
55
Confirming the refrigerant address and indoor unit number
Press E MODE button to confirm the refrigerant address and unit number. After a while, [--] will flash in the mode number display (I).
WIf [88] appears in the room temperature display section, the selected refrigerant address does not exist in the system. Also, if [F] appears in the unit number display section, the selected unit number does not exist. Enter the correct refrig-
erant address and unit number at steps 2 and 3.
FUNCTION
Designated indoor unit starts fan draft operation by pressingE MODE button. Check which indoor unit is designated for func­tion setting by doing this. In addition, all the units of the selected refrigerant address start fan draft operation if the unit number is set to 00 or AL.
Example) When the refrigerant address is set to 00 and the
unit number is 02;
(a) Outdoor unit (b) Indoor unit (c) Unit number 01 (d) Unit number 02 (e) Unit number 03 (f) Fan draft (g) Designation (h) Remote controller
WIf any undesignated indoor units start fan draft operation under multiple refrigerant grouping system, refrigerant addresses may be overlapped. Reassign refrigerant address­es at the DIP switch of the outdoor unit.
66
Selecting the mode number
Press F (TEMP) buttons to set the desired mode number. (It is possible to set the number of available mode only.)
77
Selecting the setting of designated mode
Press G button, and the setting number will start to flash.
Press F (TEMP) button to select the setting num­ber.
Check the current status of the setting by doing this.
68
Page 69
88
Registering the settings from steps 33to 77into memory
The mode and setting numbers (1)(2) will start to flash when the MODE button E is pressed and registration will begin. The numbers are set when the flashing stays lit.
FUNCTION
21
21
FUNCTION
WIf [---] appears in the room temperature display as the mode/setting number, or if a flashing [88] display appears, a transmis­sion problem may have occurred. Check to see if there are some sources of transmission interference (noise) nearby.
99
Registering other settings simultaneously
Repeat steps 3 to 8 to make other function settings.
00
Completing the function settings Press A FILTER and B TEST RUN buttons simultaneously for at least two seconds. (For modes 15 and higher, press J and B simultaneously for at least 2 seconds.) After a while, the function selection screen will disappear and air conditioner OFF display will appear.
WDo not use the remote controller for 30 seconds after completing the function
setting. (Any requests will be rejected.)
FUNCTION
69
Page 70
ON/OFF
TEMP
FAN
VANE
MODE
CHECK
LOUVER
TEST RUN
AUTO STOP
AUTO START
h
min
CHECK
RESET
SET
CLOCK
h
CHECK
min
h
The flow of the function selection procedure is shown below. This example shows how to turn off the function that raises the set temperature by 4 degrees during HEAT operation . The procedure is given after the flow chart.
1 Check the function selection setting. 2 Switch to function selection mode.
(Enter address "50" in troubleshooting mode, then press the HOUR button.)
Troubleshooting mode is the mode entered when you press the INSPECT button twice to display "INSPECT".
3 Specify unit No. "01" (since the function applies to unit 01).
(Set address "01" while still in troubleshooting mode, then press the MINUTE button.)
Note: You can't specify the refrigerant address. 4
Select mode No. "24" (function that raises set temperature by 4 degrees during HEAT operation). (Set address "24" while still in troubleshooting mode, then press the HOUR button.)
6
Finished
8 End function selection mode.
(End troubleshooting mode.)
YES
NO
Note: When you switch to function selection mode
on the wireless remote controller's operation area, the unit ends function selection mode automatically if nothing is input for 10 minutes or longer.
5 Select setting No. "02" (OFF).
(Set address "02" while still in troubleshooting mode, then press the HOUR button.)
Change unit No.
YES
NO
7
13-11-2. Selecting functions using the wireless remote controller (Type C)
h
min
Functions can be selected with the wireless remote controller. Function selection using wireless remote controller is available only for refriger­ant system with wireless function. Refrigerant address cannot be specified by the wireless remote controller.
[Flow of function selection procedure]
[Operating instructions]
1 Check the function settings. 2 Press the button twice continuously. CHECK is lit and “00” blinks.
Press the temp button once to set “50”. Direct the wireless remote controller toward the receiver of the indoor unit and press the button.
3 Set the unit number.
Press the temp button to set the unit number. (Press “01” to specify the indoor unit whose unit number is 01.) Direct the wireless remote controller toward the receiver of the indoor unit and press the button.
By setting unit number with the button, specified indoor unit starts performing fan operation. Detect which unit is assigned to which number using this function. If unit number is set to AL, all the indoor units in same refrigerant system start performing fan operation simultaneously.
* If a unit number that cannot be recognized by the unit is entered, 3 beeps of 0.4 seconds will be heard. Reenter the unit number
setting.
* If the signal was not received by the sensor, you will not hear a beep or a “double beep” may be heard. Reenter the unit number
setting.
4 Select a mode.
Press the temp button to set a mode. Press “24” to turn on the function that raises the set temperature by 4 degree
during heat operation. Direct the wireless remote controller toward the sensor of the indoor unit and press the button.
The sensor-operation indicator will flash and beeps will be heard to indicate the current setting number. Current setting number: 1 = 1 beep (one second)
2 = 2 beeps (one second each)
* If a mode number that cannot be recognized by the unit is entered, 3 beeps of 0.4 seconds will be heard. Reenter the mode
number.
* If the signal was not received by the sensor, you will not hear a beep or a “double beep” may be heard. Reenter the mode
number.
5 Select the setting number.
Press the temp button to select the setting number. (02: Not available) Direct the wireless remote controller toward the receiver of the indoor unit and press the button. The sensor-operation indicator will flash and beeps will be heard to indicate the the setting number.
Setting number: 1 = 2 beeps (0.4 seconds each)
* If a setting number that cannot be recognized by the unit is entered, the setting will turn back to the original setting.
6 Repeat steps 4 and 5 to make an additional setting without changing unit number. 7 Repeat steps 3 to 5 to change unit number and make function settings on it. 8 Complete the function settings
* Do not use the wireless remote controller for 30 seconds after completing the function setting.
* If the signal was not received by the sensor, you will not hear a beep or a “double beep” may be heard. Reenter the setting number.
Press ON / OFF button.
3 = 3 beeps (one second each)
2 = 2 beeps (0.4 seconds each, repeated twice) 3 = 2 beeps (0.4 seconds each, repeated three times)
70
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14 DISASSEMBLY PROCEDURE
w When servicing, pay careful attention in removing heavy parts. w Collect the refrigerant before you service the refrigerant system.
PUHZ-RP8YHA PUHZ-RP10YHA
w When brazing, make sure to apply the non-oxidizing braze.
OPERATING PROCEDURE
1. Removing the service panel
(1) Remove 8 service panel fixing screws (5o10)
(see photo 1) .
(2) Remove the service panel by sliding it towards you.
w It is the panel to remove when you maintain
the refrigerant circuit, electrical parts, and compressor.
2. Removing the rear panel
(1) Remove 7 rear panel fixing screws (5o10) (see photo 2). (2) Remove the rear panel by sliding it towards you.
w It is the panel to remove when you maintain the machine
room from the rear side.
3. Removing the front panel
(1) Remove 7 front panel fixing screws (5o10) (see photo 1). (2) Remove the front panel by sliding it towards you, then upward.
w It is the panel to remove when you maintain the thermistor
and the fan motor.
PHOTOS
Photo 1 (front)
Front panel
Front panel fixing screw (7pcs)
Servis panel
Service panel fixing screw (8pcs)
Photo 2 (rear)
Rear guard
Rear guard fixing screw (7pcs)
Rear panel fixing screw (7pcs)
71
Rear panel
Page 72
OPERATING PROCEDURE PHOTOS
4. Removing the fan motor
(1) Remove
• 10 fan guard fixing screws (5o15) (see photo 3).
• Fan guard by sliding it upward.
• Cap by pulling it upward (see photo 4).
• Propeller fixing nut (M16, left screw).
• Washer ([32) and the propeller from the fan motor shaft (see photo 4).
• Propeller holding washer ([40) from the fan motor shaft.
Note 1: Be careful not to drop any of the cap, nuts, and washers
inside the unit.
(2) Remove the service panel and the front panel. (3) Disconnect the relay connector of the fan motor lead wire
in the electrical parts box.
(4) Loosen all the clamps for the fan motor lead wire, and
pull out the wire from the penetration part.
(5) Remove
• 4 motor support fixing screws (5o15).
• Motor support together with the fan motor (see photo 4).
Note 2: The motor support and the fan motor should be held
by two people.
(6) Remove
• 4 fan motor fixing screws (M6o16).
• Fan motor (see photo 5).
Photo 3
Fan guard fixing screw
Unit leg
Front
Fan guard
Fan guard fixing screw
Service panel
Photo 4
Propeller
Cap
Nut tightening torque 20i2N•m
Photo 5
Fan motor
Motor support fixing screw (4pcs)
Fan motor lead wire
Fan motor fixing screw (4pcs)
72
Motor support
Page 73
OPERATING PROCEDURE PHOTOS
5. Removing the electrical parts box
(1) Remove
• Service panel.
• Waterproof sheet for the electrical parts.
(2) Disconnect
• Power wire from TB1, and the indoor / outdoor connecting wire from TB2 (see photo 6).
• Fan motor relay connector.
• Lead wires in the compressor terminal cover (see photo 6).
(3) Disconnect all the following connectors from the con-
troller circuit board.
• LEV-A(Linear expansion valve / 6P, white)
• TH3 (Thermistor <Outdoor pipe> / 3P, white)
• TH32 (Thermistor <Outdoor pipe> / 3P, black)
• TH4 (Thermistor <Discharge> / 3P, white)
• TH6/7 (Thermistor <Outdoor 2-phase pipe>, <Outdoor> / 4P,
red)
• 63H (High pressure switch / 3P, yellow)
• 63L (Low pressure switch / 3P, red)
• 21S4 (4-way solenoid valve / 3P, green)
• SV2 (Bypass solenoid valve / 3P, blue)
(4) Remove
• 4 electrical parts box fixing screws (5o10).
• Electrical parts box by sliding it towards you (see photo6).
Photo 6
Outdoor Controller circuit board
Electrical parts box
Terminal block (TB1)
Electrical parts box fixing screw
Compressor
Electrical parts box pedestal
Terminal block (TB2)
Terminal cover
Screw tightening torque
1.7~2.1N
Cover panel fixing screw
Cover panel
m
6. Removing the thermistor <Outdoor 2-phase pipe> (TH6) and thermistor <Outdoor> (TH7)
w TH6 and TH7 are replaced together, since they are combined
together at the connector to the controller circuit board. (1) Remove the service panel and the front panel. (2) Disconnect the connector TH6/7 (4P, red) from the controller
circuit board. (3) Loosen all the clamps for the lead wire and cut 2 fasteners
(see photo 7). (4) Pull out
• Thermistor <Outdoor 2-phase pipe> (TH6) from the sensor holder mounted on the heat exchanger.
• Thermistor <Outdoor pipe> (TH7) from the sensor holder (see photo 7).
7. Removing the thermistor <Outdoor pipe>
(1) Remove the service panel and the front panel. (2) Disconnect the connector TH3 (3P, white) or TH32 (3P, black)
from the controller circuit board.
(3) Loosen all the clamps for the lead wire and cut 2 fasteners
(see photo 7).
(4) Pull out the thermistor (TH3 or TH32) from the sensor holder
mounted on the heat exchanger (see photo 7).
w When there is difficulty in pulling out TH3 from the heat
exchanger, open the side panel (right) by removing 2 side panel fixing screws (5o10).
Photo 7
Thermistor <Outdoor pipe> (TH32)
Clamp
Clamp
Thermistor <Outdoor> (TH7)
Clamp
Thermistor <Outdoor 2­phase pipe> (TH6)
Fan motor lead wire penetration part
Thermistor <Outdoor pipe> (TH3)
Fastener
73
Page 74
OPERATING PROCEDURE PHOTOS
8. Removing the thermistor <Discharge>
(1) Remove the service panel. (2) Disconnect the connector TH4 (3P, white) from the controller
circuit board. (3) Loosen all the clamps for the lead wire (see photo 7). (4) Pull out the thermistor (TH4) from the sensor holder mounted
on the compressor discharging pipe (see photo 8).
9. Removing the 4-way solenoid valve coil, the linear
expansion valve coil, and the bypass solenoid valve coil
(1) Remove the service panel. <4-way solenoid valve coil>
(2) Disconnect the connector 21S4 (3P, green) from the controller
circuit board. (3) Loosen all the clamps for the lead wire and cut 2 fasteners
(see photo 7). (4) Remove the 4-way solenoid valve coil fixing screw (M4o6)
(see photo 9). (5) Remove the 4-way solenoid valve coil by sliding it towards
you (see photo 8, 9). <Bypass solenoid valve coil>
(2) Disconnect the connector SV2 (3P, blue) from the controller circuit board. (3) Loosen all the clamps for the lead wire and cut 2 fasteners
(see photo 7). (4) Remove the bypass solenoid valve coil fixing screw (M4o6)
(see photo 9). (5) Remove the bypass solenoid valve coil by sliding it upward.
<Linear expansion valve coil>
2. Disconnect the connector LEV-A(6P, white) from the controller circuit board.
3. Loosen all the clamps for the lead wire and cut 2 fasteners
(see photo 7).
4. Remove the linear expansion valve coil by sliding it upward (see photo 9).
Photo 8
Photo 9
Linear expan­sion valve
Bypass solenoid valve
4-way solenoid valve coil
<Side panel (right) is removed>
Linear expan­sion valve coil
Thermistor <Discharge> (TH4)
4-way solenoid valve
Bypass solenoid valve coil fixing screw
Bypass solenoid valve coil
Note) When attaching the coil, make sure to tie the lead wires
with the fasteners that are equivalent to the ones you just cut.
Valve bed support
Valve bed support fixing screw
74
4-way sole­noid valve coil fixing screw
4-way solenoid valve coil
4-way sole­noid valve
Page 75
OPERATING PROCEDURE PHOTOS
10. Removing the 4-way solenoid valve
(1) Remove
• Service panel.
• 3 cover panel fixing screws (5o10).
• Cover panel (see photo 6).
• 4-way solenoid valve coil (see photo 8, 9).
• 2 valve bed support fixing screws (5o10), then valve bedsupport (see photo 9).
• 4 valve bed fixing screws (5o10), 4 stop valve fixing screws
(5o16), then valve bed (see photo 15). (2) Collect the refrigerant. (3) Remove 4-way solenoid valve together with the pipes from 3
welded points shown in the photo 10.
(4) Separate 4 welded pipes from the 4-way solenoid valve.
Note 1: Collect the refrigerant without releasing it in the air. Note 2: The welded points can be accessed easily by removing
the right side panel.
Note 3: When installing the 4-way solenoid valve, cover it
with a wet cloth to prevent it from heating (120
or more), then braze the pipe (non-oxidizing braze).
;;
Photo 10
Bypass solenoid valve
Thermistor <Discharge>
11. Removing the linear expansion valve
(1) Remove
• Service panel.
• 3 cover panel fixing screws (5o10).
• Cover panel (see photo 6).
• Linear expansion valve coil (see photo 11).
• 2 valve bed support fixing screws (5o10), then valve bed support (see photo 9).
• 4 valve bed fixing screws (5o10), 4 stop valve fixing screws (5o16), then valve bed (see photo 15).
(2) Collect the refrigerant. (3) Remove the linear expansion valve from 2 welded points.
Note 1: Collect the refrigerant without releasing it in the air. Note 2: The welded points can be accessed easily by removing
the right side panel.
Note 3: When installing the linear expansion valve, cover it
with a wet cloth to prevent it from heating (120;;or more), then braze the pipe (non-oxidizing braze).
3 welded points of the 4-way solenoid valve
<Side panel (right) is removed>
Photo 11
Linear expansion valve
4-way solenoid valve
Linear expansion valve coil
75
Page 76
OPERATING PROCEDURE
12. Removing the bypass solenoid valve
(1) Remove
• Service panel
• 3 cover panel fixing screws (5o10).
• Cover panel (see photo 6).
• Bypass solenoid valve coil (see photo 9).
• 2 valve bed support fixing screws (5o10), then valve bed support (see photo 9).
• 4 valve bed fixing screws (5o10), 4 stop valve fixing screws (5o16), then valve bed (see photo 15).
(2) Collect the refrigerant. (3) Remove the bypass solenoid valve from 2 welded points.
Note 1: Collect the refrigerant without releasing it in the air. Note 2: The welded points can be accessed easily by
removing the right side panel.
PHOTOS & ILLUSTRATION
13. Removing the low pressure switch and the high pressure switch
(1) Remove
• Service panel (see photo 1).
• 3 cover panel fixing screws (5o10).
• Cover panel (see photo 6).
• 2 valve bed support fixing screws (5o10), then valve bed support (see photo 9).
• 4 valve bed fixing screws (5o10), 4 stop valve fixing screws
(5o16), then valve bed (see photo 15).
(3) Disconnect the lead wire for the low pressure switch or the
high pressure switch (see photo 12). (4) Collect the refrigerant (5) Remove the low pressure switch or the high pressure switch
from the welded part.
Note 1: Collect the refrigerant without releasing it in the air. Note 2: The welded points can be accessed easily by
removing the right side panel.
Note 3: When installing the low / high pressure switch,
cover it with a wet cloth to prevent it from heating (100;;or more), then braze the pipe
(non-oxidizing braze).
Photo 12
Lead wire for the high pressure switch
High pressure switch
Low pressure switch
Lead wire for the low pressure switch
76
Page 77
OPERATING PROCEDURE
PHOTOS & ILLUSTRATION
14. Removing the reactor
(1) Remove
• Service panel
• 2 screws (4o8) that hold the terminal block fixing metal plate in front of the electrical parts box, then slightly pull the plate towards you.
• 4 screws (4o8) that hold the controller circuit board fixing metal plate in front of the electrical parts box, then tilt the plate towards you (see photo 6).
• 3 reactor fixing screws (4o8).
• Remove the reactor by sliding it upward (see photo 14).
Photo 13
screws
Photo 14
screws
screws
screws
15. Removing the compressor
(1) Remove
• Service panel (see photo 2).
• 3 cover panel fixing screws (5o10).
• Cover panel (see photo 6).
• 2 valve bed support fixing screws (5o10), then valve bed support (see photo 9).
• 4 valve bed fixing screws (5o10), 4 stop valve fixing screws
(5o16), then valve bed (see photo 15).
• Terminal cover.
• 3 lead wire fixing screws (M5o10), then disconnect the lead
wire (see photo 15). (2) Collect the refrigerant. (3) Remove the sound insulation. (4) Disengage the welded points of the compressor inlet and dis
charge pipes.
(5) Remove 3 compressor fixing nuts by using a spanner or a
monkey wrench.
Note: Collect the refrigerant without releasing it in the air.
77
photo 15
Valve bed support
Terminal
Compressor
Compressor fixing nut (3pcs)
Reactor
Valve bed fixing screw
Valve bed
Valve bed fixing screw
Page 78
OPERATING PROCEDURE PHOTOS
16. Removing the accumulator
(1) Remove
• Service panel (see photo 1).
• Electrical parts box (see photo 6).
• 2 electrical parts box leg fixing screws (5o10), then electrical parts box legs (see photo 6).
• 2 lower fixing screws (5o10) of the heat sink duct.
• 2 screws (4o10) which hold the metal plate above the heat sink, then remove the plate.
• Fan guard.
• 3 upper fixing screws (5o10) of the heat sink duct located below the fan motor, then remove the hear sink duct (see photo 15).
(2) Collect the refrigerant. (3) Disengage 2 welded points of the accumulator inlet and outlet
(see photo 17).
(4) Remove 4 accumulator fixing screws (5o10), then take out the
accumulator.
Note 1: Collect the refrigerant without releasing in the air. Note 2: The welded points can be accessed easily by remov-
ing the rear panel. When servicing from the rear side, remove the rear panel first, then follow the procedure from number 2 (collecting the refrigerant) mentioned above (see photo 16).
Photo 16
Fan motor
Upper heat sink duct fixing screw (3pcs)
Photo 17
Accumulator
<Viewed from rear side>
Accumulator fixing screw (4pcs)
78
Page 79
15 PARTS LIST
PUHZ
1 1 2 2 1 1
1 1 2 2 1 1
MOTOR CAP NUT M16 SUPPORT MOTOR SUPPORT FAN MOTOR PROPELLER
R01 E01 122 R01 E05 097
— R01 E20 130 T7W E26 763 R01 E03 115
1 2 3 4 5 6
RP8 RP10
YHA
Part No. Specification
No.
Wining
Diagram
Symbol
Recom­mended
Q,ty
Price
Unit
Amount
Part Name
Q,ty/set
Remarks
(Drawing No.)
BG02U187H03
MF
FAN PARTS PUHZ-RP8YHA PUHZ-RP10YHA
2
1
6
5
3
4
79
Page 80
STRUCTURAL PARTS PUHZ-RP8YHA PUHZ-RP10YHA
2
1
26
24
25
3
6
12
7
8
4
9
10
23
22
18 17
16
15
12
14
13
21
20
19
12
11
5
80
Page 81
No.
Part No. Specification
R01 E01 675
1
R01 E05 662
2
R01 E06 668
3
R01 E05 667
4
R01 E06 658
5 6
R01 H75 202
7 8 9
10
R01 E00 808
11 12 13 14 15
R01 E74 202
16
R01 H76 202
17 18
R01 E10 661
19
R01 E07 667
20
R01 E03 698
21
R01 E66 408
22 23 24
R01 E39 409
25 26 27 28 29 30 31
— — —
— — — —
— —
— — — — — —
Part Name
FAN GUARD SIDE PANEL (L) FRONT PANEL SERVICE PANEL COVER PANEL SEPARATOR THERMISTOR (OUTDOOR PIPE) HEAT SINK DUCT BASE VALVE BED SUPPORT LEG SUPPORT VALVE BED SEPARATOR SUPPORT DRAIN DUCT THERMISTOR (OUTDOOR PIPE) THERMISTOR (OUTDOOR) HEAT EXCHANGER JOINT SIDE PANEL (R) REAR PANEL REAR GUARD HEAT EXCHANGER (1) COIL PLATE (1) COIL PLATE (2) HEAT EXCHANGER (2) TOP FRAME LABEL (MITSUBISHI) LABEL (INVERTER) ELECTRICAL PARTS BOX PEDESTAL SENSOR HOLDER SEPARATOR CAP
Q,ty/set
PUHZ
RP8 RP10
YHA
1 1 1 1 1 1 1 1 1 1 2 4 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2
1 1 1 1 1 1 1 1 1 1 2 4 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2
Remarks
(Drawing No.)
RG00N510G03
RG00T950G05 BG02Q044G08 BH02C038H01
RG02N341H03 RG02N340G05
RG02T894H03 RG00T951G03
RG02N346G10
RG02N397H05 RG02N397K05
RG00N473G09 DG79R130H01
BK79C208G02 RG02T748H04 BG25V080H03
RG02T749H04
Wining
Diagram
Symbol
TH32
TH3
TH6,TH7
Recom­mended
Q,ty
Unit
Price
Amount
81
Page 82
FUNCTIONAL PARTS PUHZ-RP8YHA PUHZ-RP10YHA
19 1820
1
2
3
4 5
17
16
15
6
1413121110987
82
Page 83
No.
Part No. Specification
T97 410 741
1
R01 E20 242
2
R01 E59 401
3
R01 E06 413
4
R01 E05 413
5
R01 E09 410
6
R01 E08 410 R01 E00 450
7
R01 30L 450 R01 E07 410
8
R01 E00 570
9
R01 E00 417
10
T7W E01 417 R01 E01 450
11
R01 E02 450
12
T7W E07 242
13
R01 E11 403
14
R01 E02 490
15
T7W E06 242
16
R01 E03 428
17
T7W E03 208
18
R01 25T 209
19
T7W E13 440
20
R01 E00 201
21 22
R01 E19 425
23
R01 E20 425
24
Part Name
MOTOR FOR COMPRESSOR
ANV47FFBMT LINEAR EXPANSION VALVE COIL LINEAR EXPANSION VALVE CHARGE PLUG CHARGE PLUG STOP VALVE STOP VALVE
3/8F 1/2F
STRAINER STRAINER STOP VALVE
1F GASKET FRANG ASSY FRANG ASSY STRAINER STRAINER SOLENOID COIL (FOUR-WAY VALVE) SOLENOID VALVE (FOUR-WAY VALVE) OIL SEPARATOR SOLENOID COIL (BYPASS VALVE) SOLENOID VALVE (BYPASS VALVE) HIGH PRESSURE SWITCH LOW PRESSURE SWITCH ACCUMULATOR THERMISTOR (DISCHARGE) SOUND INSULATION CAPILLARY TUBE CAPILLARY TUBE
3.0o1.0o1000
3.0o1.0o300
Q,ty/set
PUHZ
RP8 RP10
YHA
1 1 1 1 1
1 1 1 1 1
1
1
1
1 1 1
1
1 1
1 1 2 1 1 1 1 1 1 1 1 1 1 1 1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
Remarks
(Drawing No.)
RG33N368G03
Wining
Diagram
Symbol
MC
LEV
21S4
SV 63H 63L
TH4
Recom­mended
Q,ty
Unit
Price
Amount
83
Page 84
ELECTRICAL PARTS PUHZ-RP8YHA PUHZ-RP10YHA
1
2
3
4
1314161015
12
5678 9 11
84
Page 85
PUHZ
1 1 2 2 2 1 1 1 1 1 1 1 1 1 2 1 1
1 1 2 2 2 1 1 1 1 1 1 1 1 1 2 1 1
CONTROLLER CIRCUIT BOARD CIRCUIT BOARD SUPPORT PLATE FUSE FUSE FUSE HOLDER NOISE FILTER CIRCUIT BOARD TERMINAL BLOCK (POWER SUPPLY) TERMINAL BLOCK (INDOOR / OUTDOOR) REACTOR RUSH CURRENT PROTECT RESISTOR POWER CIRCUIT BOARD ELECTRICAL PARTS BOX RIGHT SIDE PLATE HEAT SINK FAN CONTROLLER CIRCUIT BOARD MAIN SMOOTHING CAPACITOR ELECTRICAL PARTS BOX WATERPROOF SHEET FOR THE ELECTRICAL PARTS
T7W E23 315
— R01 E02 239 R01 E03 239 R01 30L 241 T7W E06 346 T7W E06 716 T7W E22 716 T7W E05 259 R01 E08 233 T7W E11 313
— T7W E38 310 T7W E03 254
1 2 3 4 5 6 7 8
9 10 11 12 13 14 15 16 17
RP8 RP10
YHA
Part No. Specification
No.
Wining
Diagram
Symbol
Recom-
mended
Q,ty
Price
Unit
Amount
Part Name
Q,ty/set
Remarks
(Drawing No.)
BH00C028G10
RG11N336G05
RG02N450G10
RG02N349G06
RG00N768G02
DCL
FUSE3,4 FUSE1,2
5P(L1,L2,L3,N,;)
3P(S1,S2,S3)
N.F.
C.B.
P.B.
F.C.
RS
TB1
CB1, 2
TB2
250V 15A
250V 6.3A
2.7mH 25A
85
Page 86
16 OPTIONAL PARTS
Parts name
RP8·RP10
Parts No.
MSDD-50WR-E MSDT-111R-E MSDF-1111R-E PAC-SG73RJ-E ([9.52 [12.7) PAC-SG92DS-E PAC-SG86AG-E PAC-SG87AG-E PAC-SG82DR-E PAC-SG85DR-E PAC-SK73MI-E PAC-SK80SI-E PAC-SF60MA-E
Twin
Triple
Quadruple
Front, Rear
Left, Right
[9.52 [12.7
Main
Sub
Distribution pipe
Joint pipe Centralized drain kit
Air guide Filter dryer A-control interface board M-NET adapter
HEAD OFFICE : MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU TOKYO 100-8310, JAPAN
cCopyright 2004 MITSUBISHI ELECTRIC ENGINEERING CO., LTD. Distributed in Nov. 2004 No.OC317 PDF 9 Made in Japan.
New publication, effective Nov. 2004 Specifications subject to change without notice.
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