13. PARTS LIST ····················································87
14. RoHS PARTS LIST ·········································90
Model name
indication
OUTDOOR UNIT
NOTE :
· This service manual describes technical data of outdoor unit.
As for indoor units, refer to its service manual.
· RoHS compliant products have <G> mark on the spec name plate.
· For servicing of RoHS compliant products, refer to the RoHS PARTS LIST.
15. OPTIONAL PARTS ·········································95
Revision:
· PUMY-P100/125/140VHMA
are added in REVISED
EDITION-B.
· Some descriptions have
been modified.
· Please void OC376
REVISED EDITION-A
···22
Use new refrigerant pipes.
Make sure that the inside and outside of refrigerant piping are clean and it has no contamination
such as sulfur hazardous for use, oxides, dirt,
shredded 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.
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 enters 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 enters into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of compressor.
If large amount of mineral oil enters, 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) Perform service after recovering 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.Tool nameSpecifications
1Gauge manifold·Only for R410A
·Use the existing fitting
·Use high-tension side pressure of 5.3MPa·G or over.
2Charge hose·Only for R410A
·Use pressure performance of 5.09MPa·G or over.
3Electronic scale
4Gas leak detector·Use the detector for R134a, R407C or R410A.
5Adaptor for reverse flow check·Attach on vacuum pump.
6Refrigerant charge base
7Refrigerant cylinder·Only for R410A·Top of cylinder (Pink)
Bender
Pipe cutter
Welder and nitrogen gas cylinder
Refrigerant charging scale
Vacuum gauge or thermistor vacuum gauge and
vacuum valve
Charging cylinder
Air purge, refrigerant charge
and operation check
Gas leak check
Refrigerant recovery
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
Refrigerant charge
Check the degree of vacuum. (Vacuum
valve prevents back flow of oil and refrigerant to thermistor vacuum gauge)
Refrigerant charge
Tool exclusive for R410A
Tool exclusive for R410A
Tool for HFC refrigerant
Tool exclusive for R410A
Tool exclusive for R410A
Ester oil, ether 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 materialsUseR410A toolsCan R22 tools be used?
: 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 R410A is 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 its working pressure is 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 inch, 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.)
• A handy remote controller for use in conjunction
with the Melans centralized management system.
• Addresses must be set.
• Addresses setting is not necessary.
MA remote controller
PAR-21MAA
3-1. UNIT CONSTRUCTION
Decorative panel
*1. It is possible only by 1:1 system.
*2. When the indoor unit of Fresh Air type is connected with the outdoor unit, the maximum connectable total indoor unit
(1 indoor unit of Fresh Air type is connected with 1 outdoor unit.)
Operating temperature range (outdoor temperature) for fresh air type indoor units differ from other indoor units.
Refer to 3-2(3).
capacity is 110%(100% in case of heating below -5
:(23˚F)).
5
3-2. UNIT SPECIFICATIONS
P L F Y - P 80 V BM - EPU M Y - P 125 VH M A
PAC type
AM
BM
KM
M
KM
LMD
Frequency
conversion
controller
Refrigerant
R407C/R22
R410A
commonness
Refrigerant
R410A
NEW frequency converter
one-to-many air conditioners
(flexible design type)
Indicates equivalent
to Cooling capacity
(k cal / h)
Indicates equivalent
to Cooling capacity
(k cal / h)
Power supply
V: Single phase
220-230-240V 50Hz
220V 60Hz
Power supply
V: 1-phase
220-230-240V : 50Hz
220V : 60Hz
L : Ceiling cassette
K : Wall-mounted type
E : Hidden skylight type
C: Ceiling suspended type
M: Ceiling cassette type
F : Floor standing type
}
M-NET
control
Outdoor unit
model type
Sub-numberSub-number
M-NET control
Frequency
conversion
controller
Outdoor unit
MULTI-S
Service Ref.
Capacity
Cooling (kW)
Heating (kW)
PUMY-P140VHM
PUMY-P140VHMA
15.5
18.0
3.3
PUMY-P125VHM
PUMY-P125VHMA
14.0
16.0
2.9
PUMY-P100VHM
PUMY-P100VHMA
11.2
12.5
2.2Motor for compressor (kW)
Cooling
W.B. 15~24°C
D.B. -5~46°C
w1
Heating
D.B. 15~27°C
W.B. -15~15°C
Indoor-side intake air temperature
Outdoor-side intake air temperature
■ In case of connecting fresh air type indoor unit
air type indoor
Capacity of Fresh
Cooling
Heating
Indoor-side and Outdoor-side
P80
D.B.21~43: w2
W.B.15.5~35:
D.B.-10~20:
w
3
intake air temperature
P140
D.B.21~43:
w
2
W.B.15.5~35:
D.B.-5~20: w3
w
2.Thermo-off(FAN-mode) automatically starts if the outdoor temp. is lower than 21:D.B..
w
3.Thermo-off(FAN-mode) automatically starts if the outdoor temp. is higher than 20:D.B..
(1) Outdoor Unit
Cooling / Heating capacity indicates the maximum value at operation under the following condition.
w. Cooling Indoor: D.B. 27°C / W.B. 19.0°C
Outdoor : D.B. 35°C
Heating Indoor: D.B. 20°C
Outdoor : D.B. 7°C / W.B. 6°C
(2) Method for identifying MULTI-S model
■ Indoor unit < When using Model 80 >
■ Outdoor unit <When using model 125 >
(3) Operating temperature range
Notes D.B. : Dry Bulb Temperature
W.B. : Wet Bulb Temperature
w1. 10~46°C DB : In case of connecting PKFY-P20/P25 type indoor unit.
6
4SPECIFICATIONS
PUMY-P100VHM
PUMY-P100VHMA
Cooling CapacitykW14.0
Heating CapacitykW16.0
Input (Cool)kW4.32
Input Current (Cool)A
Power factor (Cool)
Input (Heat)kW4.33
Input Current (Heat)A
Oil (Model)2.3 (VHM:MEL56, VHMA:FV50S)
ProtectionHigh pressure protectionHP switch
devicesCompressor protectionDischarge thermo, Over current detection
Fan motor protectionOverheating/Voltage protection
Total Piping length (Max.)m
Farthestm80
Max. Height differencem30
Chargeless lengthm50
Piping diameter
Guaranteed operation range
Gas[mm(in)15.88 (5/8)
Liquid[mm(in)9.52 (3/8)
/min(CFM)100 (3,530)
L
(cool)-5~ 46: DB
(heat)-15~ 15: WB
11.2
12.5
3.34
15.4/14.8/14.1, 15.4
98.4
3.66
16.9/16.2/15.5,16.9
98.4
3.35
3.42
6
14.5 (130%)
Single phase , 50Hz 220/230/240V, 60Hz 220V
49 / 51
VHM:ANB33FDCMT, VHMA:ANB33FDHMT
2.2
PUMY-P125VHM
PUMY-P125VHMA
20.0/19.1/18.3, 20.0
98.4
20.0/19.1/18.3, 20.0
98.5
120
*1
PUMY-P140VHM
PUMY-P140VHMA
15.5
18.0
5.35
24.7/23.6/22.7,24.7
98.4
5.58
25.8/24.7/23.6,25.8
98.4
2.90
3.23
20.2 (130%)
51 / 53
*2
8
3.3
Rating conditions (JIS B 8616)
Cooling Indoor: D.B. 27: / W.B. 19:
Outdoor : D.B. 35: / W.B. 20:
Heating Indoor: D.B. 20:
Outdoor : D.B. 7: / W.B. 6:
Note. *1. 20m:In case of installing outdoor unit lower than indoor
unit.
*2. 10~46:DB :In case of connecting PKFY-P20/P25 type indoor
unit.
*3. Electrical data is for only outdoor unit.
7
5DATA
Model 20
Model Number for indoor unit
Model Capacity
22
Model 15
17
Model 2528Model 3236Model 4045Model 5056Model 6371Model 7180Model 8090Model 100
112
Model 125
140
Model 140
160
5-1. COOLING AND HEATING CAPACITY AND CHARACTERISTICS
5-1-1. Method for obtaining system cooling and heating capacity:
To obtain the system cooling and heating capacity and the electrical characteristics of the outdoor unit, first add up the ratings
of all the indoor units connected to the outdoor unit (see table below), and then use this total to find the standard capacity with
the help of the tables on 5-2.STANDARD CAPACITY DIAGRAM.
(1) Capacity of indoor unit
(2) Sample calculation
1System assembled from indoor and outdoor unit (in this example the total capacity of the indoor units is greater than that of
the outdoor unit)
• Outdoor unit PUMY-P125VHM
• Indoor unit PKFY-P25VAM-E o 2 , PLFY-P50VLMD-E o 2
2According to the conditions in 1, the total capacity of the indoor unit will be: 28 o 2 + 56 o 2 = 168
3The following figures are obtained from the 168 total capacity row of 5-2. STANDARD CAPACITY DIAGRAM :
Capacity (kW)
Cooling
A 14.60
Heating
B 16.33
Outdoor unit power consumption (kW)
Cooling
4.39
Heating
3.99
Outdoor unit current (A)/230V
Cooling
19.4
Heating
17.6
5-1-2. Method for obtaining the heating and cooling capacity of an indoor unit:
(1) The capacity of each indoor unit (kW) = the capacity A (or B)
(2) Sample calculation (using the system described above in 5-1-1. (2) ):
During cooling: During heating:
• The total model capacity of the indoor unit is:
2.8 o 2 + 5.6 o 2=16.8kW
Therefore, the capacity of PKFY-P25VAM-E and
PLFY-P50VLMD-E will be calculated as follows by
using the formula in 5-1-2. (1):
Model 25=14.6 o= 2.43kW
Model 50=14.6 o= 4.87kW
2.8
16.8
5.6
16.8
o
total model capacity of all indoor units
• The total model capacity of indoor unit is:
3.2 o 2 + 6.3 o 2=19.0
Therefore, the capacity of PKFY-P25VAM-E and PLFYP50VLMD-E will be calculated as follows by using the
formula in 5-1-2. (1):
Model 25=16.33 o= 2.75kW
Model 50=16.33 o= 5.41kW
model capacity
3.2
19.0
6.3
19.0
8
5-2. STANDARD CAPACITY DIAGRAM
Total capacity of
Capacity(kW
)
Power Consumption(kW)Current(A)/220VCurrent(A)/230VCurrent(A)/240V
Power Consumption(kW)Current(A)/220VCurrent(A)/230VCurrent(A)/240V
14
5-3. CORRECTING COOLING AND HEATING CAPACITY
Rated cooling capacity
Rated heating capacity
Indoor D.B. 27°C / W.B. 19°C
Outdoor D.B. 35°C
Indoor D.B. 20°C
Outdoor D.B. 7°C / W.B. 6°C
0.4
-5 010203040 46
0.6
0.8
1.0
1.2
1.4
0.6
0.8
1.0
1.2
1.4
22
20
18
16
22
20
18
16
0.6
0.4
0.8
1.0
1.2
1.4
0.4
0.6
0.8
1.0
1.2
1.4
-10-15-5051015
20
25
15
20
25
15
5-3-1.Correcting Capacity for Changes in Air Conditions
(1)The performance curve charts (Figure 1, 2) show the change ratio of capacity and input (power consumption) according to the
indoor and outdoor temperature condition when defining the rated capacity (total capacity) and rated input under the standard
condition in standard piping length (5m) as “1.0”.
• Standard conditions:
• Use the rated capacity and rated input given in “5-2.”.
• The input is the single value of the outdoor unit; the input of each indoor unit must be added to obtain the total input.
(2)The capacity of each indoor unit may be obtained by multiplying the total capacity obtained in (1) by the ratio between the
individual capacity at the rated time and the total capacity at the rated time.
Individual capacity under stated conditions = total capacity under the stated conditions o
5-3-2. Correcting Capacity for Changes in the Length of Refrigerant Piping
Cooling
Heating
100
95
90
85
80
75
70
5 101520253035404550556065707580[m]
Cooling P100 model
Heating P100, 125, 140
models
Cooling P125 model
Cooling P140 model
Capacity ratio [%]
Corrected pipe length
(1) During cooling, to obtain the ratio (and the equivalent piping length) of the outdoor units rated capacity and the total
in-use indoor capacity, first find the capacity ratio corresponding to the standard piping length from Figure 3,
and then multiply by the cooling capacity from Figure 1 to obtain the actual capacity.
(2) During heating, to find the equivalent piping length, first find the capacity ratio corresponding to standard piping length
from Figure 3, and then multiply by the heating capacity from Figure 2 to obtain the actual capacity.
(1) Capacity CORRECTION CURVE (Figure 3)
(2) Method for Obtaining the Equivalent Piping Length
Equivalent length for type P100·125·140 = (length of piping to farthest indoor unit) + (0.3 o number of bends in the piping) (m)
Length of piping to farthest indoor unit: type P100~P140.....80m
5-3-3. Correction of Heating Capacity for Frost and Defrosting
If heating capacity has been reduced due to frost formation or defrosting, multiply the capacity by the appropriate correction
factor from the following table to obtain the actual heating capacity.
Correction factor diagram
Outdoor Intake temperature (W.B.°C)
Correction factor
6
1.0
4
0.98
2
0.89
0
0.88
-2
0.89
-4
0.9
-6
0.95
-8
0.95
-10
0.95
16
5-4. NOISE CRITERION CURVES
1.5m
1m
MICROPHONE
UNIT
GROUND
90
80
70
60
50
40
30
20
10
631252505001000 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
PUMY-P100VHM
PUMY-P100VHMA
COOLING
MODE
HEATING
49
SPL(dB)
51
LINE
90
80
70
60
50
40
30
20
10
631252505001000 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
PUMY-P125VHM
PUMY-P125VHMA
COOLING
MODE
HEATING
50
SPL(dB)
52
LINE
90
80
70
60
50
40
30
20
10
631252505001000 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
PUMY-P140VHM
PUMY-P140VHMA
COOLING
MODE
HEATING
51
SPL(dB)
53
LINE
17
6
OUTLINES AND DIMENSIONS
PUMY-P100VHM
PUMY-P125VHM
PUMY-P140VHM
19
2-U Shaped notched holes
(Foundation Bolt M10)
600175175
Rear Air Intake
Installation Feet
417
330
56
37
2-12o36 Oval holes
28370
53
42
70
(Foundation Bolt M10)
30
Left·········For the power supply
Center····For the transmission line
Terminal block
56
950
Air Discharge
Right·······For concentration control
Ground for the transmission line
( )
Ground for the power supply
("GR"marking position)
322
Ground for concentration control
Service panel
1088
Handle for moving
635371
1350
1
w1 507
w1 423
2
Front piping cover
Rear piping cover
71
71
23
Bottom piping hole
(Knockout)
81219
Unit : mm
Drain hole
(5-[33)
14514522030145
Side Air Intake
4 PIPING-WIRING DIRECTIONS
Piping and wiring connections
can be made from 4 directions:
front, right, rear and below.
FOUNDATION
500
Over
10
Over
30
Less than
500
Over
Service space
<Foundation bolt height>
Please secure the unit
firmly with 4 foundation (M10)
bolts.(Bolts and washers must
be purchased locally.)
150
Over
2 SERVICE SPACE3 FOUNDATION BOLTS
Dimensions of space needed
for service access are
shown in the below diagram.
Handle for moving
Side Air Intake
Rear Air Intake
Handle for moving
Handle for moving
Handle for moving
Air intake
Rear trunking hole
(Knockout)
Power supply wiring hole
(2-[27Knockout)
45 40
Right trunking hole
(Knockout)
Power supply wiring hole
(2-[27Knockout)
7540
Right piping hole
(Knockout)
4540
Power supply wiring hole
(2-[27Knockout)
[
n92
92
n92
Rear piping hole
(Knockout)
92
65
2755
23 73 63
92
1955
7363
23 27 92
23 73 63
2755
65
92
Over 10
FREE
1 FREE SPACE (Around the unit)
The diagram below shows a
basic example.
Explantion of particular details is
given in the installation manuals etc.
Over 10
Over 150Over 1000
Example of Notes
w1·····Indication of STOP VALVE connection location.
1Refrigerant GAS pipe connction(FLARE)[15.88(5/8 inch)
Connection Lead <N-Phase>
Connection Terminal <Ground>
EI
Connector
CNAC1/2
Connector
CN5
TH7TH6 TH3 TH463HS63H63L
Multi Controller Board
MULTI.B.
Fuse <6.3A>
F1,F2
F500
Fuse <3A>
SW1
Switch <Display Selection>
SW2
Switch <Function Selection>
SW3
Switch <Test Run>
SW4
Switch <Model Selection>
SW5
Switch <Function Selection>
SW6
Switch <Function Selection>
SW7
Switch <Function Selection>
SW8
Switch <Function Selection>
SWU1
Switch <Unit Address Selection, 1st digit>
SWU2
Switch <Unit Address Selection, 2nd digit>
TRANS
Transformer
LED1,2
Digital Indicator <Operation Inspection Display>
LED3
LED <Power Supply to Main Microcomputer>
CNS1
Connector <Multi System>
CNS2
Connector <Centralized Cotrol>
MULTI. B.
CN3D
CN3S
CN3N
MF1
MF2
TB3
(BRN)
M1
M2
(BRN)
S
TO INDOOR UNIT
CONNECTING WIRES
DC 30V(Non-polar)
TB7
(ORN)
M1
M2
(ORN)
S
FOR CENTRALIZED
CONTROL
DC 30V(Non-polar)
POWER SUPPLY
~/N
AC220/230/240V 50Hz
NO FUSE
AC220V 60Hz
BREAKER
TB1
L
N
1
1
3
52C
(BLK)
F500
X505
1
4 5 6 7
4 5 6 7
21S4
(GRN)
3 1
21S4
CNF1
(WHT)
CNF2
(WHT)
CNDC
(PNK)
X504
+
CB
31
SV2
(BLU)
3 1
TH8
X503
1 2 3
63HS
(WHT)
TRANS
(WHT)
2 1
SV1
52C
P. B.
123
CNAF
4 5 6
(WHT)
1212 12 123 4 5 6 7
(WHT)
(WHT)
(RED)
(WHT)
TABN
TABP
X502
SV1
CN2
CN3
CN5
CN4
1 21 2 1 23 4
TH7/6
(RED)
63H
(YLW)
SS
(WHT)
3 1
RS
3 1
X501
TABP2
TH3
(WHT)
+
U
RED
MC
F1
F2
V
WHT
(WHT)
31
-
W
BLK
TH4
63L
(RED)
2
1
DCL
CNDC
(PIN)
+
LED3
CNAC
(RED)
ACTM
1
3
TABN1
CNS1
(RED)
L1
+
-
TABN2
(WHT)
1 2 3
(WHT)
7 6 5 4 3 2 1
CNS2
(YLW)
2
121
+
+
(RED)
CN2
123 4 5 6
L2
TABT
~
~
TABS
~
~
TABP1
1 2 3
P
N1
N2
I
(BLU)
1 2 3
CN4
(WHT)
2 1
CN51
(WHT)
SWU2SWU1
54321
w
1
CN41
(WHT)
3
13
CNAC2
(RED)
1
CNAC1
(WHT)
(WHT)
4 3 2 14 3 2 1
SW5
LED1
88
CN40
E I
LO
NO
CN5
(RED)
M-P.B.
N. F.
12
NILI
SW6
SW2SW8SW1
SW7SW3SW4
LED2
88
CN102
(WHT)
4 3 2 1
1 2 3 4
CN2
(WHT)
TP1
CN1
(WHT)
3 1
w1 MODEL SELECT
MODELS
PUMY-P100VHM
PUMY-P125VHM
PUMY-P140VHM
CNAC
Connector <To Noise Filter Circuit Board>
CNDC
Connector <To Noise Filter Circuit>
CN2
Connector <To Power Circuit Board>
CN4
Connector <To Power Circuit Board>
CN40
Connector <Centralized Cotrol Power Supply>
CN41
Connector <For shorting Jumper Connector>
TH3
Connector <Thermistor>
TH4
Connector <Thermistor>
TH7/6
Connector <Thermistor>
63HS
Connector <High Pressure Sensor>
63H
Connector <High Pressure Switch>
63L
Connector <Low Pressure Switch>
CNF1,CNF2
Connector <Fan Motor>
21S4
Connector <Four-way Valve>
SV1
Connector <Bypass Valve>
SS
Connector <For Option>
CN3D
Connector <For Option>
CN3S
Connector <For Option>
CN3N
Connector <For Option>
CN51
Connector <For Option>
Relay
X501~505
Transmission Power Board
M-P.B.
CN1
Connector <To Noise Filter Circuit Board>
CN2
Connector <To Multi Controller Board>
1: ON 0: OFF
123456
1
0
1
0
1
0
SW4
0
0
0
0
1
0
1
0
0
1
1
0
Cautions when Servicing
• WARNING: When the main supply is turned off, the voltage[340V] in the main capacitor will drop to 20V in approx. 2 minutes (input voltage:240V).
!
When servicing,make sure that LED1, LED2 on the outdoor circuit board goes out, and then wait for at least 1 minute.
• Components other than the outdoor board may be faulty: Check and take corrective action, referring to the service manual.
Do not replace the outdoor board without checking.
NOTES:
1.Refer to the wiring diagrams of the indoor units for details on wiring of each indoor unit.
Self-diagnosis function
The indoor and outdoor units can be diagnosed automatically using the self-diagnosis switch (SW1) and LED1, LED2 (LED indication) found
on the multi-controller of the outdoor unit.
LED indication : Set all contacts of SW1 to OFF.
• During normal operation
• The LED indicates the drive state of the controller in the outdoor unit.
Bit
Indication
1
Compressor
operated
2
52C321S44SV1
5
(SV2)6—
7
8
Always lit
—
[Example]
When the compressor and
SV1 are turned on during cooling
operation.
12345678
• When fault requiring inspection has occurred
The LED alternately indicates the inspection code and the location
of the unit in which the fault has occurred.
Connector<To N.F. Board CN52C>
(Symbol of Board is CNLVB)
SS
Connector<Connection For Option>
CN3D
Connector<Connection For Option>
CN3S
Connector<Connection For Option>
CN3N
Connector<Connection For Option>
CN51
Connector<Connection For Option>
LED<Operation Inspection Display>
LED1,LED2
LED3
LED<Power Supply to Main Microcomputer>
Fuse<T6,3AL250V>
F1,F2
X501~505
Relay
M-NET Power Circuit Board
TP1
ConnectionTerminal<Ground>
Centralized Control Line>
MULTI. B.
MF1
1
MS
3~
MF2
1
MS
3~
X505
52C
13
(BLK)
TB3
2
RED
M1
M2
RED
S
TO INDOOR UNIT
CONNECTING WIRES
DC 30V(Non-polar)
TB7
2
YLW
M1
M2
YLW
S
FOR CENTRALIZED
CONTROL
DC 30V(Non-polar)
POWER SUPPLY
~/N 230V 50Hz
TB1
L
N
Cautions when Servicing
WARNING: When the main supply is turned off, the voltage [340 V] in the main capacitor will drop to 20 V in approx. 2 minutes (input voltage: 240 V).
!
When servicing, make sure that LED1, LED2 on the outdoor circuit board goes out, and then wait for at least 1 minute.
Components other than the outdoor board may be faulty: Check and take corrective action, referring to the service manual.
Do not replace the outdoor board without checking.
NOTES:
1.Refer to the wiring diagrams of the indoor units for details on wiring of each indoor unit.
Self-diagnosis function
The indoor and outdoor units can be diagnosed automatically using the self-diagnosis switch (SW1) and LED1, LED2 (LED indication) found on
the multi-controller of the outdoor unit.
LED indication : Set all contacts of SW1 to OFF.
· During normal operation
The LED indicates the drive state of the controller in the outdoor unit.
Bit
Indication
When fault requiring inspection has occurred
The LED alternately indicates the inspection code and the location of the unit in which the fault has occurred.
1
Compressor
operated
2
52C321S44SV15(SV2)
67
—
63L
t°
t° t° t°
2112
TH3
TH4
(WHT)
113
63L
(RED)
3
63H
(YLW)
X501
X502
SV1
1
3
1212
(WHT)
(WHT)
IPM
+
TABP2
CN3
RED
CN5
CN4
TABU
RED
V
U
MS
3~
DCL
+
RED
-
BLK
ACTM
—
F1
F2
SS
2
-
TABV
TABW
BLK
WHT
W
MC
L1 L2
8
Always lit
CN3D
CN3S
CN3N
(WHT)
(RED)
(BLU)
131313
1
LED3
CNS2
CNS1
(YLW)
(RED)
1
1
2
CNAC
(RED)
22
CNDC
(PIN)
2
1
3
TABN1
U
BLK
+
TABN2
WHT
4
16
P
N1
N2
Io
CNLVB
SWU2SWU1
(WHT)
4
BLU
WHT
CN41
SW5
w
1
LED1
CN40
(WHT)
1
1
4
2
3
1
CNAC2
3
2
1
CNAC1
(RED)
16
1
5
CN51
(WHT)
CN4
CN2
(WHT)
(WHT)
7
1
2
7
2
TABT
DS3
-
+
TABS
DS2
-
+
TABP1
RED
WHT
2
2
RED
w1 MODEL SELECT 1:ON 0:OFF
PUMY-P100VHMA
PUMY-P125VHMA
PUMY-P140VHMA
[Example]
When the compressor and
SV1 are turned on during cooling
operation.
• Example for wiring control cables, wiring method and address setting, permissible lengths, and the prohibited items are listed
in the standard system with detailed explanation.
A. Example of a M-NET remote controller system (address setting is necessary.)
Example of wiring control cablesWiring Method and Address Setting
1. Standard operation
a. Use feed wiring to connect terminals M1 and M2 on
transmission cable block (TB3) for the outdoor unit
(OC) to terminals M1 and M2 on the transmission
cable block (TB5) of each indoor unit (IC). Use
non-polarized 2 wire.
b. Connect terminals M1 and M2 on transmission cable
terminal block (TB5) for each indoor unit with the
terminal block (TB6) for the remote controller (RC).
c. Set the address setting switch (on outdoor unit
P.C.B.) as shown below.
• 1 remote controller for each
indoor unit.
• There is no need for setting the 100
position on the remote controller.
2. Operation using two remote controllers
• Using 2 remote controllers
for each indoor unit.
3. Group operation
• Multiple indoor units operated
together by 1 remote controller
Combinations of 1through 3 above are possible.
Unit
Indoor unit (IC)
Outdoor unit
(OC)
Remote
controller (RC)
Range
001 to 050
051 to 100
101 to 150
Setting Method
Use the smallest
address of all the indoor
unit plus 50.
Indoor unit address plus
100.
a. Same as above.
b. Same as above.
c. Set address switch (on outdoor unit P.C.B.) as
shown below.
Unit
Indoor Unit (IC)
Outdoor unit
(OC)
Main Remote
Controller (RC)
Sub Remote
Controller (RC)
Range
001 to 050
051 to 100
101 to 150
151 to 200
Setting Method
Use the smallest
address of all the indoor
units plus 50.
Indoor unit address plus
100.
Indoor unit address plus
150.
a. Same as above.
b. Connect terminals M1 and M2 on transmission cable
terminal block (TB5) of the IC main unit with the most
recent address within the same indoor unit (IC)
group to terminal block (TB6) on the remote controller.
c. Set the address setting switch (on outdoor unit
P.C.B.) as shown below.
Unit
IC (Main)
IC (Sub)
Outdoor Unit
Main Remote
Controller
Sub Remote
Controller
Range
001 to 050
001 to 050
051 to 100
101 to 150
151 to 200
Use the smallest address within the
same group of indoor units.
Use an address, other than that of
the IC (Main) from among the units
within the same group of indoor
units. This must be in sequence with
the IC (Main).
Use the smallest address of all the
indoor units plus 50.
Set at an IC (Main) address within
the same group plus 100.
Set at an IC (Main) address within
the same group plus 150.
Setting Method
d. Use the indoor unit (IC) within the group with the
most functions as the IC (Main) unit.
24
—
—
• Name, Symbol and the Maximum Remote controller Units for Connection
M1M2
TB5
S12
TB15
01
102
IC(Main)
AB
M1M2
TB3
SAB
TB7
51
OC
S
M1M2
TB5
S12
2
TB15
02
IC(Sub)
RC
M1M2
TB5
S12
TB15
01
101
RC
(Main)
151
IC
M1M2
TB3
SAB
TB7
51
OC
S
M1M2
TB5
S12
TB15
02
IC
RC
(Sub)
102
RC
(Main)
103
RC
(Sub)
104
RC
ABABABABAB
M1M2
TB5
S12
TB15
01
101
IC
AB
M1M2
TB3
SAB
TB7
51
OC
S
M1M2
TB5
S12
TB15
02
IC
RC
TB15
AB
MA
Name
Outdoor unit
Indoor unit
M-NET remote
controller
Symbol
OC
IC
RC
Maximum units for connection
—
1 OC unit can be connected to 1-8 IC units (P100 : 1-6 IC units)
Maximum 2 RC for 1 indoor unit, Maximum 16 RC for 1 OC
Permissible LengthsProhibited items
Longest transmission cable length
(1.25 mm
L
1 + L2, L2 + L3, L3 + L1 [ 200m
2
)
Remote controller cable length
1. If 0.5 to 1.25 mm
2
R1, R2 [10m
2. If the length exceeds 10 meters,
the exceeding section should
be 1.25 mm
2
and that section
should be a value within the
total extension length of the
transmission cable and
maximum transmission cable
length. (L
3)
Same as above
• M-NET remote controller(RC) and MA remote controller(MA) cannot be used together.
• Do not connect anything with TB15 of indoor unit(IC).
• Use the indoor unit(IC)
address plus 150 as the
sub remote controller
address. In this case, it
should be 152.
• 3 or more remote controller (RC) cannot be
connected to 1 indoor
unit.
Same as above
• The remote controller
address is the indoor
unit main address plus
100. In this case, it
should be 101.
25
B. Example of a group operation system with 2 or more outdoor units and a M-NET remote controller.
A
B
C
E
D
M1M2S
M1 M2 S
TB7
TB3
IC
(51)
M1 M2 S
TB5
RC
(01)
IC
M1 M2 S
TB5
(03)
IC
M1 M2 S
TB5
(02)
IC
M1 M2 S
TB5
(04)
IC
M1 M2 S
TB5
(05)
IC
M1 M2 S
TB5
(07)
IC
M1 M2 S
TB5
(06)
L2
L1
(101)
RC
(105)
RC
(104)
RC
(155)
OC
M1 M2 S
TB7
(53)
OC
3
M1M2S
Power Supply
Unit
M1M2S
G-50A
L3
L6L7
L4
L5
2
4
1
ABABAB
AB
M1M2 S
TB3
A : Group 1
B : Group 3
C : Group 5
D : Shielded Wire
E : Sub Remote Controller
( ): Address
r
r
r
r
(Address settings are necessary.)
Examples of Transmission Cable WiringWiring Method Address Settings
slla. Always use shielded wire when making connections between the outdoor unit (OC) and the indoor unit (IC), as well
for all OC-OC, and IC-IC wiring intervals.
b. Use feed wiring to connect terminals M1 and M2 and the ground terminal on the transmission cable terminal block
(TB3) of each outdoor unit (OC) to terminals M1 and M2 on the terminal S on the transmission cable block of the
indoor unit (IC).
c. Connect terminals M1 and M2 on the transmission cable terminal block of the indoor unit (IC) that has the most
recent address within the same group to the terminal block on the remote controller (RC).
d. Connect together terminals M1, M2 and terminal S on the terminal block for central control (TB7) for the outdoor
unit (OC).
e. DO NOT change the jumper connector CN41 on MULTI controller board.
f. The earth processing of S terminal for the centralized control terminal block(TB7) is unnecessary.
Connect the terminal S on the power supply unit with the earth.
g. Set the address setting switch as follows.
Unit
IC (Main)
IC (Sub)
Outdoor Unit
Main Remote Controller
Sub Remote Controller
MA Remote Controller
101 to 150
151 to 200
Range
01 to 50
01 to 50
51 to 100
—
Use the smallest address within the same group of indoor units.
Use an address, other than the IC (Main) in the same group of indoor units.
This must be in sequence with the IC (Main).
Use the smallest address of all the indoor units plus 50.
*The address automatically becomes “100” if it is set as “01 - 50”.
Set at an IC (Main) address within the same group plus 100.
Set at an IC (Main) address within the same group plus 150.
Unnecessary address setting (Necessary main/ sub setting)
Setting Method
h. The group setting operations among the multiple indoor units is done by the remote controller (RC) after the electrical
power has been turned on.
26
• Name, Symbol, and the Maximum Units for Connection
A
B
C
E
D
M1M2S
M1 M2 S
TB7
TB3
IC
(51)
M1 M2 S
TB5
RC
(01)
IC
M1 M2 S
TB5
(03)
IC
M1 M2 S
TB5
(02)
IC
M1 M2 S
TB5
(04)
IC
M1 M2 S
TB5
(05)
IC
M1 M2 S
TB5
(07)
IC
M1 M2 S
TB5
(06)
(101)
RC
(105)
RC
(104)
RC
(155)
OC
M1 M2 S
TB7
(53)
OC
M1M2S
Power Supply
Unit
M1M2S
G-50A
ABABAB
AB
M1M2 S
TB3
A : Group 1
B : Group 3
C : Group 5
D : Shielded Wire
E : Sub Remote Controller
( ): Address
• Longest length via outdoor units : L1+L2+L3+L4, L1+L2+L3+L5, L1+L2+L6+L7 [ 500 meters (1.25mm2)
8) should be included in the calculation of the maximum length and overall length.
2
)
shielded wire. The length of this sec-
Permissible Length
)
Prohibited items
• Never connect together the terminal blocks (TB5) for transmission wires for indoor units (IC) that have been connected to
different outdoor units (OC).
• Set all addresses to ensure that they are not overlapped.
• M-NET remote controller and MA remote controller cannot be connected with the indoor unit of the same group wiring
together.
27
C. Example of a MA remote controller system (address setting is not necessary.)
M1M2
TB5
S12
TB15
00
IC
AB
M1M2
TB3
S
M1M2
TB7
00
OC
L
1L2
S
M1M2
TB5
S12
TB15
00
IC
AB
MAMA
r1
r2
MA
M1M2
TB5
S12
TB15
00
IC
AB
M1M2
TB3
SM1M2
TB7
00
OC
S
M1M2
TB5
S12
TB15
00
IC
MA
ABAB
MAMA
r3
r4
r5
AB
r6
MA
M1M2
TB5
S12
TB15
00
IC
AB
M1M2
TB3
S
M1M2
TB7
00
OC
S
M1M2
TB5
S12
TB15
00
IC
r7
r8
NOTE : In the case of same group operation, need to set the address that is only main indoor unit.
Example of wiring control cablesWiring Method and Address Setting
1. Standard operation
a. Use feed wiring to connect terminals M1 and M2 on
transmission cable block (TB3) for the outdoor unit
(OC) to terminals M1 and M2 on the transmission
cable block (TB5) of each indoor unit (IC). Use
non-polarized 2 wire.
b. Connect terminals 1 and 2 on transmission cable
terminal block (TB15) for each indoor unit with the
terminal block for the MA remote controller (MA).
• 1 remote controller for each
indoor unit.
2. Operation using two remote controllers
• Using 2 remote controllers
for each indoor unit.
3. Group operation
a. The same as above.
b. The same as above.
c. In the case of using 2 remote controllers, connect
terminals 1 and 2 on transmission cable terminal
block (TB15) for each indoor unit with the terminal
block for 2 remote controllers.
· Set the sub remote controller position for one of
MA remote controller’s main switch.
Refer to the installation manual of MA remote
controller
a. The same as above.
b. The same as above.
c. Connect terminals 1 and 2 on transmission cable ter-
minal block (TB15) of each indoor unit, which is doing
group operation with the terminal block for MA remote
controller. Use non-polarized 2 wire.
d. In the case of same group operation, need to set the
address that is only main indoor unit. Please set the
smallest address within number 01-50 of the indoor
unit with the most functions in the same group.
• Multiple indoor units operated
together by 1 remote
controller
Combinations of 1through 3 above are possible.
28
Permissible LengthsProhibited items
MA
M1M2
TB5
S12
TB15
00
IC
AB
M1M2
TB3
S
M1M2
TB7
00
OC
S
MA
M1M2
TB5
S12
TB15
00
IC
AB
MA
M1M2
TB5
S12
TB15
00
IC
AB
M1M2
TB3
S
M1M2
TB7
00
OC
S
M1M2
TB5
S12
TB15
00
IC
MA
ABAB
MAMAMA
ABAB
M1M2
TB5
S12
TB15
00
IC
AB
M1M2
TB3
S
M1M2
TB7
00
OC
S
M1M2
TB5
S12
TB15
00
IC
AB
MAMA
AB
RC
Longest transmission cable length
L
1 + L2 [ 200m (1.25 mm
2
)
MA remote controller cable length
R
1, R2 [ 200m (0.3 ~ 1.25 mm
Longest transmission cable length
The same as above.
MA remote controller cable length
R
3 +R4, R5 +R6 [ 200m
(0.3 ~ 1.25 mm
2
)
The MA remote controller and the
M-NET remote controller cannot be
used together with the indoor unit
2
)
of the same group.
3 MA remote controllers or more
cannot be connected with
the indoor unit of the same group.
Longest transmission cable length
The same as above.
MA remote controller cable length
R
7 +R8 [ 200m (0.3 ~ 1.25 mm
2
)
The second MA remote controller is
connected with the terminal
block(TB15) for the MA remote controller of the same indoor unit(IC) as
the first remote control.
29
D. Example of a group operation with 2 or more outdoor units and a MA remote controller.
A
B
C
E
D
M1 M2 S
TB7
IC
(51)
M1 M2 1 2S
TB5 TB15
12
TB15
12
TB15
12
TB15
12
TB15
12
TB15
12
TB15
MA
(01)
IC
M1 M2 S
TB5
(03)
IC
M1 M2 S
TB5
(02)
IC
M1 M2 S
TB5
(04)
IC
M1 M2 S
TB5
(05)
IC
M1 M2 S
TB5
(07)
IC
M1 M2 S
TB5
(06)
L2
L1
MAMAMA
OC
M1 M2 S
TB7
(53)
OC
1
m4
3
S
Power Supply
Unit
S
G-50A
L3
L6L7
L4
m3
ABABAB
M1M2
M1M2
1
1
2 2
AB
M1M2S
TB3
M1M2S
TB3
A : Group 1
B : Group 3
C : Group 5
D : Shielded Wire
E : Sub Remote Controller
( ): Address
m
m
m
m
m
m
(Address settings are necessary.)
Examples of Transmission Cable Wiring
a. Always use shielded wire when making connections between the outdoor unit (OC) and the indoor unit (IC), as well
for all OC-OC, and IC-IC wiring intervals.
b. Use feed wiring to connect terminals M1 and M2 and the ground terminal on the transmission cable terminal block
Setting Method
(TB3) of each outdoor unit (OC) to terminals M1 and M2 on the terminal S on the transmission cable block of the
indoor unit (IC).
c. Connect terminals M1 and M2 on the transmission cable terminal block of the indoor unit (IC) that has the most
recent address within the same group to the terminal block on the remote controller (RC).
d. Connect together terminals M1, M2 and terminal S on the terminal block for central control (TB7) for the outdoor
unit (OC).
e. DO NOT change the jumper connector CN41 on MULTI controller board.
f. The earth processing of S terminal for the centralized control terminal block(TB7) is unnecessary.
Connect the terminal S on the power supply unit with the earth.
g. Set the address setting switch as follows.
Unit
IC (Main)
IC (Sub)
Wiring Method Address Settings
Outdoor Unit
Main Remote Controller
Sub Remote Controller
MA Remote Controller
h. The group setting operations among the multiple indoor units is done by the remote controller (RC) after the electrical
power has been turned on.
Range
01 to 50
01 to 50
51 to 100
101 to 150
151 to 200
—
Use the smallest address within the same group of indoor units.
Use an address, other than the IC (Main) in the same group of indoor units.
This must be in sequence with the IC (Main).
Use the smallest address of all the indoor units plus 50.
*The address automatically becomes “100” if it is set as “01 - 50”.
Set at an IC (Main) address within the same group plus 100.
Set at an IC (Main) address within the same group plus 150.
Unnecessary address setting (Necessary main/ sub setting)
30
• Name, Symbol, and the Maximum Units for Connection
A : Group 1
B : Group 3
C : Group 5
D : Shielded Wire
E : Sub Remote Controller
( ): Address
A
B
C
E
D
M1 M2 S
TB7
IC
(51)
M1 M2 1 2S
TB5 TB15
12
TB15
12
TB15
12
TB15
12
TB15
12
TB15
12
TB15
MA
(01)
IC
M1 M2 S
TB5
(03)
IC
M1 M2 S
TB5
(02)
IC
M1 M2 S
TB5
(04)
IC
M1 M2 S
TB5
(05)
IC
M1 M2 S
TB5
(07)
IC
M1 M2 S
TB5
(06)
MAMAMA
OC
M1 M2 S
TB7
(53)
OC
S
Power Supply
Unit
S
G-50A
AB
M1M2S
TB3
M1M2S
TB3
ABABAB
M1M2
M1M2
Longest length via outdoor unit (M-NET cable): L1+L2+L3+L4 and L1+L2+L6+L7[ 500 m (1.25 mm2 or more)
Longest transmission cable length (M-NET cable): L1 and L3+L4 and L6 and L2+L6 and L7[ 200 m (1.25 mm2 or more)
Remote controller cable length: m1 and m1+m2+m3 and m1+m2+m3+m4
[ 200 m (0.3 to 1.25
mm2)
Permissible LengthProhibited items
• Never connect together the terminal blocks (TB5) for transmission wires for indoor units (IC) that have been connected to
different outdoor units (OC).
• M-NET remote controller and MA remote controller cannot be connected with the indoor unit of the same group wiring
together.
31
9TROUBLESHOOTING
ON/OFF
TEST RUN
˚C
1Hr.
FILTER
CHECK TEST
TEMP.
TIMER SET
Check code indicator (see NOTE 1)
Test run remaining time indicator (see NOTE 3)
Display panel
(M-NET Remote controller)
ON/OFF button 9
ON/OFF LED (Lights up in operation)
LOUVER button 6
TEST RUN button 2
AIR DIRECTION button 6
FAN SPEED button 5
TEST RUN indicator
Indoor unit liquid pipe temperature indicator
(see NOTE 4)
(Cooling/Heating)
OPERATION
SWITCH button
3,4
Control panel
9-1. CHECK POINTS FOR TEST RUN
9-1-1. Procedures of test run
(1) Before test run, make sure that following work is completed.
• Installation related :
Make sure that the panel of cassette type and electrical wiring is done.
Otherwise electrical functions like auto vane will not operate normally.
• Piping related :
Perform leakage test of refrigerant and drain piping.
Make sure that all joints are perfectly insulated.
Check stop valves on both liquid and gas side for full open.
• Electrical wiring related :
Check ground wire, transmission cable, remote controller cable, and power supply cable for secure connection.
Make sure that all switch settings of address or adjustments for special specification systems are correctly settled.
(2) Safety check :
With the insulation tester of 500V, inspect the insulation resistance.
Do not touch the transmission cable and remote controller cable with the tester.
The resistance should be over 1.0 MΩ. Do not proceed inspection if the resistance is under 1.0 MΩ.
Inspect between the outdoor unit power supply terminal block and ground first, metallic parts like refrigerant pipes or the electrical box next,
then inspect all electrical wiring of outdoor unit, indoor unit, and all linked equipment .
(3) Before operation :
a) Turn the power supply switch of the outdoor unit on for compressor protection. For a test run, wait at least 12 hours from this point.
b) Register control systems into remote controller(s). Never touch the on/ off switch of the remote controller(s). Refer to 9-1-2. Special
Function Operation and Settings (for M-NET Remote Controller), this registration is unnecessary.
(4) More than 12 hours later from power supply to the outdoor unit, turn all power switch on for test run. Perform test run according to the
“Operation procedure” table of the bottom of this page. While test running, make test run reports .
(5) When you deliver the unit after test run, instruct the end user for proper usage of the system using owners’ manual and the test run report
you made to certificate normal operation. If abnormalities are detected during test run, refer to “ 9-1-3. Countermeasures for Error During
Test Run”. As for DIP switch setting of outdoor unit, refer to” 9-5. INTERNAL SWITCH FUNCTION TABLE”.
Operation procedure
1 Turn on the main power supply of all units at least 12 hours before test run. ”HO” appears on display panel for 3 min.
2 12 hours later, press TEST RUN button twice to perform test run. “TEST RUN “ appears on display panel.
3 Press OPERATION SWITCH button to make sure that air blows out.
4 Select Cooling (or Heating) by OPERATION SWITCH button to make sure that cool (or warm) air blow out.
5 Press Fan speed button to make sure that fan speed is changed by the button.
6 Press AIR DIRECTION button or LOUVER button to make sure that air direction is adjustable(horizontal, downward, upward, and each angle).
7 Check outdoor fans for normal operation.
8 Check interlocked devices (like ventilator) for normal operation, if any. This is the end of test run operation.
9 Press ON/OFF button to stop and cancel test run.
NOTE 1 : If error code appears on remote controller or remote controller malfunction , refer to “ 9-1-3. Countermeasures for Error During Run”.
NOTE 2 : During test run operation 2-hours off timer activates automatically and remaining time is on remote controller and test run stops 2-hours
later.
NOTE 3 : During test run, the indoor liquid pipe temperature is displayed on remote controller instead of room temperature.
NOTE 4 : Depend on a model, “This function is not available” appears when air direction button is pressed. However, this is not malfunction.
32
9-1-2. Special Function Operation and Settings (for M-NET Remote Controller)
The addresses of indoor
unit and linked units are
displayed simultaneously.
(alternating
display)
These alternating IC or LC displays will appear
when entry is completed normally.
A flashing “88” will appear if there is a
problem with the entry (indicating that the
unit does not exist).
• It is necessary to perform “group settings” and “paired settings” at making group settings of different refrigerant
systems (multiple outdoor unit).
(A) Group settings: Enter the indoor unit controlled by the remote controller, check the content of entries, and clear
entries, etc.
(B) Paired settings: Used to set the linked operation of a Lossnay unit.
(1) Entering address: Follow the steps below to enter the addresses of the indoor unit using the remote controller.
a) Group settings
• Turning off the remote controller: Press the ON/OFF button to stop operation (the indicator light will go off).
• Changing to indoor unit address display mode: If the FILTER and k buttons on the remote controller are
pressed simultaneously and held for 2 seconds, the display shown in Figure 1 will appear.
• Changing address: Press the temperature adjustment buttons to change the displayed address to the
address to be entered.
• Entering the displayed address: Press the TEST RUN button to enter the indoor unit with the displayed address.
The type of the unit will be displayed as shown in Figure 2 if entry is completed normally.
If a selected indoor unit does not exist, an error signal will be displayed as shown in Figure 3. When this happens,
check whether the indoor unit actually exists and performs entry again.
• Returning to the normal mode after completing entry: Press the FILTER and k buttons simultaneously and
hold for 2 seconds to return to the normal mode.
Figure 1 (A) Group setting display
b) Paired Settings
• Turn off the remote controller: Press the remote controller’s ON/OFF button to turn it off (the indicator light will go off).
• Put in indoor unit address display mode: Press the FILTER and k buttons on the remote controller simultaneously
and hold for 2 seconds.
✻The above steps are the same as a) Group settings.
• Changing to the linked operation unit address display state: The display shown in Figure 4 will appear when the
button on the remote controller is pressed.
• Displaying the address of the Lossnay unit and linked indoor unit: In this situation, the indoor unit
number will be the lowest address of the group. The Lossnay unit will not operate if this setting is
incorrect.
✻If the temperature adjustment buttons are pressed, the address may be changed to the indoor units that are
to be linked.
✻If the time setting buttons are pressed, the address of the linked units may be changed to the address where
it is desired to enter the Lossnay .
• Linking the Lossnay and the indoor unit: The display shown in Figure 5 will appear when the TEST RUN
button is pressed. The indoor unit whose address is displayed and the Lossnay unit with a linked address
will operate in a linked manner.
✻If it is desired to display the address of the Lossnay in the indoor unit address, display the indoor
unit address in the linked unit address, and the above content will also be recorded.
✻ Apart from the indoor unit with the lowest address in the group, display and enter the addresses of the other indoor unit
that are to be linked with the Lossnay unit.
• Returning to the normal mode after completing entry: Press the FILTER and k buttons on the remote controller
simultaneously and hold for 2 seconds to return to the normal mode.
Figure 2 Normal completion of entry
Figure 3 Entry error signal
Flashing “88” indicates entry errorType of unit is displayed
a
Figure 4 (B) Making paired settings
Figure 5 Completing normal entry
33
(2) Address check: Refer to section (1) regarding address entry.
"88" will appear in the room temperature display location.
"--" will appear in the room temperature
display location.
a) In making group settings:
• Turn off the remote controller: Press the remote controller's ON/OFF button to stop operation (the indicator light will go off).
• Locate the indoor unit address display mode: Press the FILTER and k buttons on the remote controller simultaneously
and hold for 2 seconds.
• Display indoor unit address: The entered indoor units address and type will be displayed each time the button is pressed.
✻ When one entry is made, only 1 address will be displayed no matter how many times the w button is pressed.
• Returning to the normal mode after completing check: Simultaneously press the FILTER and k buttons on the remote
controller and hold for 2 seconds to return to the normal mode.
b) In making paired settings:
• Turn off the remote controller: Press the remote controller's ON/OFF button to stop operation (the indicator light will go off).
• Put into indoor unit address display mode: Press the FILTER and k buttons on the remote controller simultaneously and
hold for two seconds.
• Changing to the linked operation unit address display state: Press the a button on the remote control.
• Displaying the address of the indoor unit to be checked: Change the address to that of the indoor unit to be checked by pressing the temperature adjustment buttons .
• Displaying the address of the linked Lossnay unit: Press the w button to display the addresses of the linked Lossnay and
indoor unit in alternation.
• Displaying the addresses of other entered units: The addresses of the other entered units will be displayed in alternating
blinking after resting the w button again.
• Returning to the normal mode after completing the check: Simultaneously press the FILTER and k buttons on the remote
controller and hold for 2 seconds to return to the normal mode.
(3) Clearing an address: Refer to section (1) regarding the address entry and section (2) regarding checking addresses.
a) In making group settings:
• Turn off the remote controller: The procedure is same as a) in (2) Address check.
• Put into the indoor unit address display mode: The procedure is same as a) in (2) Address check.
• Displaying the indoor unit address to be cleared: The procedure is same as a) in (2) Address check.
• Clearing indoor unit address : ......Pressing the q button on the remote controller twice will clear the address entry of the
displayed indoor unit, resulting in the display shown in Figure 6.
The display shown in Figure 7 will appear if an abnormality occurs and the entry is not cleared.
Please repeat the clearing procedure.
• Returning to the normal mode after clearing an address: The procedure is same as a) in (2) Address check.
Figure 6 Display after address has been
cleared normally
Figure 7 Display when an abnormality
has occurred during clearing
b) In making paired settings:
• Turn off the remote controller: The procedure is same as b) in (2) Address check.
• Put into the indoor unit address display mode: The procedure is same as b) in (2) Address check.
• Put into the linked unit address display mode: The procedure is same as b) in (2) Address check.
• Display the address of the Lossnay unit or the indoor unit to be cleared.
• Deleting the address of a linked indoor unit: Pressing the q button on the remote controller twice will clear the address
entry of the displayed indoor unit, resulting in the display shown in Figure 8.
• Returning to the normal mode after clearing an address: The procedure is same as b) in (2) Address check.
Figure 8 Display after address has been cleared normally
"--" will appear in the unit type display location when an address has
(alternating
display)
been cleared normally.
"88" will appear in the unit type display location when an abnormality
has occurred during clearing.
34
9-1-3. Countermeasures for Error During Test Run
Check code
1102
1302
1500
1501
1505
2502
2500
2503
4115
4220
4230
4250
5101
5102
5103
5105
5106
5110
5201
6600
6602
6603
6606
6607
6608
6831
6832
6833
6834
7100
7101
7102
7105
7111
Piping temperature sensor trouble (TH3)
Outdoor temperature sensor trouble (TH7)
Heatsink temperature sensor trouble (TH8)
Pressure sensor trouble (63HS)
Current sensor trouble
Duplicated unit address setting
Transmission error
(Transmission processor hardware error)
Transmission error (Transmission route BUSY)
Transmission and reception error
(Communication trouble with transmission processor)
Transmission and reception error (No ACK error)
Transmission and reception error
(No responsive frame error)
MA communication receive signal error
(no receive signal)
MA communication send signal error
(starting bit derection error)
MA communication send error (H/W error)
MA communication receive error
(Synchronous recovery error)
Total capacity error
Capacity code error
Connecting unit number error
Address set error
Remote controller sensor trouble
Only M-NET Remote controller is detected.
Only M-NET Remote controller is detected.
Only M-NET Remote controller is detected.
Only M-NET Remote controller is detected.
Only M-NET Remote controller is detected. w
Only M-NET Remote controller is detected. w
Only MA Remote controller is detected.
Only MA Remote controller is detected.
Only MA Remote controller is detected.
Only MA Remote controller is detected.
0403
Serial transmission trouble
Discharge temperature trouble
Low Pressure trouble
High pressure trouble
Excessive refrigerant replenishment
Insufficient refrigerant trouble
Vacuum operation protection
Water leakage
Drain pump trouble
Drain sensor trouble (THd)
Overcurrent trouble (Overload, compressor lock)
Power synchronization signal trouble
Inverter trouble
Overheat protection of radiator panel
Power module trouble or Overcurrent trouble
Fan controller trouble (Outdoor)
Air inlet sensor trouble (TH21) or
Discharge temperature sensor trouble (TH4)
Liquid pipe temp.sensor trouble (TH22) or
Low pressure saturated temp.sensor trouble (TH6)
Gas pipe temperature sensor trouble (TH23)
Outdoor unit Multi controller board ~
Power board communication trouble
1300
Check delay code 1400
4100
Check delay code 4350
4400
Check delay code 4500
5300
Check delay code 4310
Trouble
Remarks
Detected unit
Indoor
Outdoor
Remote
controller
12345678
[Example]
When the compressor and
SV1 are turned during cooling
operation.
Bit
Indication
1
Compressor
operated
2
52C
3
21S4
4
SV15(SV2)
6
—
7
—8Always lit
Self-diagnosis function
The indoor and outdoor units can be diagnosed automatically using the self-diagnosis switch
(SW1) and LED1, LED2 (LED indication) found on the multi-controller of the outdoor unit.
LED indication : Set all contacts of SW1 to OFF.
During normal operation
The LED indicates the drive state of the controller in the outdoor unit.
• If a problem occurs during test run, a code number will appear in the temperature display area on the remote controller
(or LED on the outdoor unit), and the air conditioning system will automatically cease operating.
Determine the nature of the abnormality and apply corrective measures.
NOTE )
When the outdoor unit detects No ACK error/ No responsive frame error, an object indoor unit is treated
as a stop, and not assumed to be abnormal.
35
Display
Abnormal point and detecting method
Causes
Check points
1102
1300
1302
1500
High discharging temperature
Abnormal if discharge temperature thermistor
(TH4) exceeds 125: or 110: continuously
for 5 minutes.
Abnormal if pressure detected by high pressure
sensor and converted to saturation temperature
exceeds 40: during defrosting and discharge
temperature thermistor (TH4) exceeds 110:.
4.31MPa or more (or over 4.15MPa for
3 minutes) during the compressor operation.
Too low superheat due to low discharge
temperature
Abnormal if discharge super heat is
continuously detected less than or equal to
-15:
even though linear expansion valve has
minimum open pulse after compressor starts
operating for 10 minutes.
1 Over-heated compressor operation is
caused by shortage of refrigerant
2 Defective operation of stop valve
3 Defective thermistor
4 Defective outdoor controller board
5 Defective action of linear expansion
valve
1 Stop valve of outdoor unit is closed
during operation.
2 Disconnection or loose connection of
connector (63L) on outdoor controller
board
3
Disconnection or loose connection of 63L
4 Defective outdoor controller board
5 Leakage or shortage of refrigerant
6 Malfunction of linear expansion valve
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
board
5 Disconnection or contact failure of 63H
connection
6 Defective outdoor controller board
7 Defective action of linear expansion
valve
8 Malfunction of fan driving circuit
9 Solenoid valve (SV1) performance
failure (High-pressure cannot be
controlled by SV1)
)
High-pressure sensor defective
! High-pressure sensor input circuit
defective in multi controller board.
1 Disconnection or loose connection of
discharge temperature thermistor. (TH4)
2
Defective holder of discharge temperature
thermistor.
1 Check intake super heat.
Check leakage of refrigerant.
Charge additional refrigerant.
2 Check if stop valve is full open.
34 Turn off and check if 5101 is
displayed when the power is put
again. When 5101 is displayed, refer
to “Check points” for 5101.
5 Check linear expansion valve.
1 Check stop valve.
2~4
Check the connector (63L) on outdoor
controller board.
5 Correct to proper amount of refrigerant.
6 Check linear expansion valve.
1~6 Check 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.
4~6
Check the connector (63H) on outdoor
controller board.
7 Check linear expansion valve.
8 Replace outdoor controller board.
9 Check the solenoid valve performance.
)
Check the high-pressure sensor.
!
Check the high-pressure sensor.
12 Check the installation conditions of
discharge temperature thermistor (TH4).
36
Display
Abnormal point and detecting method
Causes
Check points
Refrigerant shortage
When the conditions of below detecting
mode 1 or 2 are satisfied during the
compressor operation.
<Detecting mode 1>
When the below conditions are satisfied
completely.
1. Compressor is operating in HEAT
mode.
2. Discharge super heat is 80; or more.
3. Difference of outer temperature
thermistor (TH7) and outdoor piping
temp. thermistor (TH3) applies to the
formula of (TH7-TH3)<5;.
4. High-pressure sensor is below about
2.04MPa.
<Detecting mode 2>
When the below conditions are satisfied
completely.
1. Compressor is operating.
2. When cooling, discharge super heat is 80;
or more.
When heating, discharge super heat is 90;
or more.
High pressure sensor is below about 2.32MPa.
1 Gas leakage, Gas shortage
2 When heating operation, scant
refrigerant operation (When heating,
air flow or thermo OFF are mixedoperation, it cause a refrigerant
shortage operation.)
3 Ball valve performance failure
(not full opened.)
4 Error detection of discharge super heat
1) High-pressure sensor defective
2) Discharge temperature thermistor
defective
3) Thermistor input circuit defective and
high-pressure sensor defective in
multi controller board
5 Error detection of TH7/TH3
1) Thermistor defective
2) Thermistor input circuit defective in
multi controller board
1 Check the refrigerant amount.
2 Check the operation condition and
refrigerant amount.
3 Check the ball valve is full opened.
4
1) Check the ball valve is full opened.
2) Check the resistance of discharge
temperature thermistor.
3) According to “Outdoor unit functions”,
set the SW2 and check the high-
pressure sensor level.
According to “Outdoor unit functions”,
check the discharge temp. thermistor level.
When the high-pressure sensor and
discharge temp. thermistor are normal
if the above mentioned detecting
pressure level and temp. are big
different from the actual pressure and
temp. replace the multi controller board.
5
1) Check the resistance of thermistor.
2) According to “Outdoor unit functions”,
check the outdoor pipe temp. thermistor
level.
3) According to “Outdoor unit functions”,
check the outer temp. thermistor level.
1501
Water leakage
1. Suspensive abnormality when float switch
detects to be in the water and drain pump
turns on and off except during cooling or dry
mode.
2. Abnormal when detecting that the drain
pump turns on and off again within 1 hour
after the detection of water leakage
suspensive abnormality, and repeats the
detection twice. <2500> is displayed.
3. The unit continues to detect abnormality
while turned off.
4. To release water leakage suspensive
abnormality
· When not detecting that the drain pump
turns off and on within 1 hour after
detecting suspensive abnormality.
· When turning to cooling operation or dry
operation.
· Detected that [liquid pipe temperature –
room temperature][ -10deg[-18°F]
2500
(Float
switch
model)
1 Check the drain function.
2 Check moving part of float switch.
3 Check the value of resistance with the
float switch ON/OFF.
1 Defective drain
Clogged drain pump
Clogged drain pipe
Adverse flow of drain in other units
2 Defective moving part of float switch
Foreign matter on the moving
part of float switch(ex. sludge etc.)
3 Defective float switch
Operation mode: When drain pump turns on as float switch detects to be in the water except during cooling/dry mode
6 min.6 min.
15 sec.
In the water
Water leakage suspensive abnormality
In the water
Water leakage abnormality
In the airIn the water In the air
15 sec.
Within 1 hourWithin 1 hour
15 sec.15 sec.
15 sec.
ON
OFF
Drain pump
Float switch
ON
OFF
37
Display
2502
(Drain
sensor
model)
Abnormal point and detecting method
Drain pump (DP)
1 Let drain sensor self-heated, and if
temperature rises slightly, as suspensive
abnormality operation stops and changes to
protect mode of restarting in 3 minutes.
2 Drain pump is abnormal if the condition
above is detected during suspensive
abnormality. <2502> is displayed.
3 Malfunction of drain pipe is constantly
detected during drain pump
operation.
1 Malfunction of drain pump
2 Defective drain
Clogged drain pump
Clogged drain pipe
3
Water drops on drain sensor
• Drops of drain trickles from lead wire.
• Clogged filter is causing wave of drain.
4 Defective indoor controller board
Causes
Check points
1 Check if drain-up machine works.
2 Check drain function.
3 Check the setting of lead wire of drain
sensor and check clogs of the filter.
4 Replace indoor controller board when
there is no problem in the above
mentioned 1~3.
4 The unit enters to forced outdoor unit stop
when following conditions, a) and b), are
satisfied (while the above mentioned
detection is performed).
a) The drain sensor detects to be
soaked in the water 10 times in a row.
b) Detected that
[liquid pipe temperature –
room temperature][ -10deg[-18°F] for
30 minutes constantly.
When the drain sensor detects to be
NOT soaked in the water, the
()
record of a) and b) will becleared.)
w Drain pump abnormality (above 1~3) is
detected before it becomes an outdoor unit
forced stop condition.
5 When indoor unit detects above 4 condition,
outdoor unit in same refrigerant sytem stops.
Also, indoor unit except for Fan or OFF
mode unit stop. <2502> is displayed on
stopped unit.
6 Detection timing of forced outdoor unit stop
Constantly detected during unit operation
and stop
7 Releasing of forced outdoor unit stop
Reset power supply of both abnormal indoor
unit and its outdoor unit in same refrigerant
system. Forced outdoor unit stop cannot be
released by remote controller OFF.
NOTE )
Above-mentioned 1~3 and 4~7 are
detected independently.
detection
5 Both of above mentioned 1~4 and the
indoor linear expansion valve full-closed
failure (leakage) happens synchronistically.
(Note) Address/Attribute displayed on
the remote controller shows the indoor
unit which is cause of trouble.
Check whether the indoor linear
expansion valve leaks or not.
38
Display
2502
(Float
switch
model)
Abnormal point and detecting method
Drain pump (DP)
1 Judge whether the sensor is in the water or
in the air by turning the float switch
ON/OFF.
In the water: Detected that the float switch
is ON for 15 seconds.
In the air:Detected that the float switch is
OFF for 15 seconds.
2 When the float switch remains to be turned
ON for 3 minutes after detected to be in the
water, the drain pump is judged to be
abnormal and <2502> will be displayed.
*It takes 3 minutes and 15 seconds to detect
abnormality including the time to judge to be
in the water.
3 The unit continue to detect abnormality
while turned off.
4 When the conditions below 1, 2 and forced
outdoor unit stop condition are met
1. Detected that
[liquid pipe temperature –
room temperature][ -10deg[-18°F] for
30 minutes constantly.
2. Float switch detects to be in the water
for 15 minutes constantly.
*Before forced outdoor unit stop condition
is met, the unit always detects 1-3 above.
5 The indoor unit detecting 4 above stops
due to detecting abnormality the outdoor
unit in same refrigerant system
(compressor is inhibited to operate). The
unit which stops due to detecting
abnormality displays <2502>.
6 Detection timing of forced outdoor unit stop
Constantly detected during unit operation
and stop
7 Releasing of forced outdoor unit stop
Reset power supply of both abnormal
indoor unit and its outdoor unit in same
refrigerant system. Forced outdoor unit
stop cannot be released by remote
controller OFF.
NOTE )
Above-mentioned 1~3 and 4~7 are
detected independently.
Causes
1 Malfunction of drain pump
2 Defective drain
Clogged drain pump
Clogged drain pipe
3 Defective moving part of float switch
Foreign matter on the moving
part of float switch(ex. sludge etc.)
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 board
39
1
Check whether the indoor controller
board connector (CN31) is
disconnected or not.
Check whether the thermistor wiring is
2
disconnected or not.
3
Check the resistance of thermistor.
4
If abnormality is not found in the
method of the above-mentioned from
1 to 3, it is defective of the indoor
controller board.
1 Open stop valve.
2 Check facility of power supply.
3 Correct the wiring (U·V·W phase) to
compressor.
4 Check compressor.
5 Replace outdoor power circuit board.
Display
4220
Abnormal point and detecting method
Overvoltage or voltage shortage
Abnormal if any of followings are detected
during compressor operation;
• Decrease of DC bus voltage to 310V
• Instantaneous decrease of DC bus voltage to
200V.
• Increase of DC bus voltage to 400V.
• Decrease of input current of outdoor unit to
0.1A only if operation frequency is more than
or equal to 40Hz or compressor current is
more than or equal to 6A.
1 Decrease of power supply voltage
2 Disconnection of compressor wiring
3 Defective 52C
4 Defective ACT module
5 Disconnection or loose connection of
CN5 on the outdoor power circuit board
6 Defective 52C drive circuit of outdoor
power circuit board
7 Disconnection or loose connection of
CN2 on the outdoor power circuit board
8 Defective ACT module drive circuit of
outdoor controller circuit board
9
Disconnection or loose connection of CNAF
Causes
Check points
1 Check the facility of power supply.
2 Correct the wiring (U·V·W phase) to
compressor. (Outdoor power circuit board).
3 VHM:Replace 52C.
VHMA:Replace noise filter circuit board
4 Replace ACT module.
5 Check CN5 wiring on the outdoor power
6 Replace outdoor power circuit board.
7 Check CN2 wiring on the outdoor power
8 Replace outdoor power circuit board.
9 Check CNAF wiring.
0
(Including 52C).
circuit board.
circuit board.
The 4220 error history can be confirmed
with SW1 No.189.
21345678
on
Temperature of heatsink
4230
Abnormal if heatsink thermistor (TH8) detects
85:
4250
(1) Power module
Check abnormality by driving power module in
case over current is detected.
(2) Compressor overcurrent interruption
Abnormal if overcurrent DC bus or
compressor is detected after compressor
starts operating for 30 seconds.
Over current : 27.5A
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
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
1 Stop valve of outdoor unit is closed.
2 Decrease of power supply voltage
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 outdoor
controller board
12 Check outdoor fan.
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
4230 is displayed within 30 minutes.
5 Check thermistor <TH8> temperature
by micro computer.
6 Replace outdoor power circuit board.
7 Replace outdoor controller circuit board.
1 Open stop valve.
2 Check facility of power supply.
3 Correct the wiring (U·V·W phase) to
compressor.
(Outdoor power circuit board).
4 Check compressor.
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
The outdoor fan motor is considered to be
abnormal if the rotational frequency of fan
motor is abnormal when detected during
operation.
Fan motor rotational frequency is abnormal if;
• 100 rpm or below detected continuously
for 15 seconds at 20: or more outside
air temperature
• 50 rpm or below or 1500 rpm or more
detected continuously for 1 minute.
7 Defective compressor
1
Failure in the operation of the DC fan motor
2
Failure in the outdoor circuit controller board
40
7 Check compressor.
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 (SW7-1 ON). 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.
1 Check or replace the DC fan motor.
2 Check the voltage of the outdoor circuit
controller board during operation.
3 Replace the outdoor circuit controller
board. (when the failure is still indicated
even after performing the check points 1
above.)
Display
5101
Abnormal point and detecting method
Room temperature thermistor (TH21)
When controller detects short (high
temp.)/open (low temp.) in thermistor
during the operation, the operation stops
and the operation changes to protect
mode of restarting in 3 minutes. If the
thermistor does not recover in 3 minutes,
the operation stops due to detecting
abnormality. In this time, <5101> is
displayed. Then, if the thermistor recover
in 3 minutes, it operates normally.
Short: Detected 90; or more
Open: Detected –40; or less
Discharge temperature thermistor (TH4)
Causes
1 Connector (CN20) contact failure Check whether the connector
2 Thermistor wiring disconnection or
half disconnection
3 Thermistor failure Check the resistance of thermistor.
4 Detecting circuit failure in the
indoor controller board
1
(CN20) in the indoor controller board
is connected or not.
2
Check whether the thermistor wiring
is disconnected or not.
mentioned 123, replace the indoor
controller board.
Check points
1
When controller detects short/open in
thermistor during the operation, the
outdoor unit stops once and restarts
operation in 3 minutes. When the detected
temperature is normal at just before of
restarting, the outdoor unit restarts.
2
When controller detects short/open in
thermistor at just before of restarting, the
unit stops due to detecting abnormality. In
this time, <5101> is displayed.
For 10 minutes after starting compressor,
3
for defrosting or for 3 minutes after recover
of defrosting, above-mentioned short/open
are not detected.
Short: 216;or more (1k')
Open: 0; or less (700k')
Note) When outdoor temperature
thermistor (TH7) is 5; or less on cooling,
open detecting is not determined as
abnormality.
1 Connector (TH4) contact failure Check whether the connector (TH4)
2 Thermistor wiring disconnection or
half disconnection
3 Thermistor failure Check the resistance of thermistor.
4 Multi controller board input circuit
failure
1
in the multi controller board is
connected or not.
2
Check whether the thermistor wiring
is disconnected or not.
3
When the resistance is not below
value, replace the thermistor.
0;··· about 700k'
10;··· about 410k'
20;··· about 250k'
30;··· about 160k'
40;··· about 104k'
Set the SW1 to
4
When the temperature in multi
controller board is not an actual
temperature, replace the multi
controller board.
1.3: Open
219.4: Short
21345678
on
41
Display
5102
Abnormal point and detecting method
Liquid pipe temperature thermistor
(TH22)
When the thermistor detects short/open
during the operation, the operation stops
and the operation changes to protect mode
of restarting in 3 minutes. If the thermistor
does not recover in 3 minutes, the
operation stops due to detecting
abnormality. In this time, <5102> is
displayed. Then, if the thermistor recover
in 3 minutes, it operates normally.
Short: Detected 90; or more
Open: Detected -40; or less
Causes
1) Connector (CN21) contact failure Check whether the connector
2) Thermistor wiring disconnection or
half disconnection
3) Thermistor failure
1
(CN21) in the indoor controller board
is connected or not.
2
Check whether the thermistor wiring
is disconnected or not.
Low pressure saturation temperature
thermistor (TH6)
1
When controller detects short/open in
thermistor during the operation, the
outdoor unit stops once and restarts
operation in 3 minutes. When the detected
temperature is normal at just before of
restarting, the outdoor unit restarts.
2
When controller detects short/open in
thermistor at just before of restarting, the
unit stops due to detecting abnormality. In
this time, <5102> is displayed.
For 10 minutes after starting compressor in
3
heating mode, above-mentioned short/open
are not detected.
Short: 90; or more
Open: -40; or less
4) Detecting circuit failure in the
indoor controller board
1) Connector (TH6) contact failure Check whether the connector (TH6)
2) Thermistor wiring disconnection or
half disconnection
3) Thermistor failure Check the resistance of thermistor.
4) Multi controller board input circuit
failure
When there is no problem in above
4
mentioned 123, replace the indoor
controller board.
1
in the multi controller board is
connected or not.
2
Check whether the thermistor wiring
is disconnected or not.
controller board is not an actual
temperature, replace the multi
controller board.
-42.5: Open
91.9: Short
on
42
Display
5103Gas pipe temperature thermistor (TH23)
Abnormal point and detecting method
Causes
Check points
5105
When the thermistor detects short/open
after 3 minutes-continuous thermo ON
during cooling or dry operation, the
operation stops and the operation
changes to protect mode of restarting in
3 minutes. If the thermistor does not
recover in 3 minutes, the operation stops
due to detecting abnormality. In this time,
<5103> is displayed. Then, if the
thermistor recover in 3 minutes, it
operates normally.
Short: Detected 90; or more
Open: Detected -40; or less
Pipe temperature / judging defrost
thermistor (TH3)
1
When controller detects short/open in
thermistor during the operation, the outdoor
unit stops once and restarts operation in
3 minutes. When the detected temperature
is normal at just before of restarting, the
outdoor unit restarts.
2
When controller detects short/open in
thermistor at just before of restarting, the
unit stops due to detecting abnormality. In
this time, <5105> is displayed.
3
For 10 minutes after starting compressor,
for defrosting or for 3 minutes after recover
of defrosting, above-mentioned short/open
are not detected.
Short: 88; or more (0.4k')
Open: -39; or less (115k')
1) Connector (CN29) contact failure Check whether the connector (CN29)
2) Thermistor wiring disconnection or
half disconnection
3) Thermistor failure Check the resistance of thermistor.
4) Detecting circuit failure in the indoor
controller board
1) Connector (TH3) contact failure Check whether the connector (TH3)
2) Thermistor wiring disconnection or
half disconnection
3) Thermistor failure Check the resistance of thermistor.
1
in the indoor controller board is
connected or not.
2
Check whether the thermistor wiring
is disconnected or not.
When there is no problem in above
mentioned 123, replace the indoor
controller board.
1
in the multi controller board is
connected or not.
2
Check whether the thermistor wiring
is disconnected or not.
3
When the resistance is not below
value, replace the thermistor.
0;····15k'
10;···9.6k'
20;···6.3k'
30;···4.3k'
40;···3.0k'
4) Multi controller board input circuit
failure
43
21345678
4
Set the SW1 to
When the temperature in multi
controller board is not an actual
temperature, replace the multi
controller board.
-42.5: Open
91.9: Short
on
Display
5106
Abnormal point and detecting method
Outdoor temperature thermistor (TH7)
1
When controller detects short/open in
thermistor during the operation, the
outdoor unit stops once and restarts
operation in 3 minutes. When the detected
temperature is normal at just before of
restarting, the outdoor unit restarts.
2
When controller detects short/open in
thermistor at just before of restarting, the
unit stops due to detecting abnormality. In
this time, <5106> is displayed.
3
For 10 minutes after starting compressor,
for defrosting or for 3 minutes after recover
of defrosting, above-mentioned short/open
are not detected.
Short: 90; or more
Open: -40; or less
5110Heatsink temperature thermistor (TH8)
(internal thermistor of power module)
Causes
1) Connector (TH7) contact failure Check whether the connector (TH7)
1
Check points
in the multi controller board is
connected or not.
2) Thermistor wiring disconnection or
half disconnection
3) Thermistor failure Check the resistance of thermistor.
2
Check whether the thermistor wiring
is disconnected or not.
3
When the resistance is not below
value, replace the thermistor.
controller board is not an actual
temperature, replace the multi
controller board.
-42.5: Open
91.9: Short
1
1) Connector (TH8) contact failure
Check whether the connector (TH8) in
the power circuit board.
When controller detects short/open in
1
thermistor during the operation, the
outdoor unit stops once and restarts
operation in 3 minutes. When the detected
temperature is normal at just before of
restarting, the outdoor unit restarts.
2
When controller detects short/open in
thermistor at just before of restarting, the
unit stops due to detecting abnormality. In
this time, <5110> is displayed.
3
For 10 minutes after starting compressor,
for defrosting or for 3 minutes after recover
of defrosting, above-mentioned short/open
are not detected.
Short:102; or more
Open: -27; or less
2) Thermistor wiring disconnection or
half disconnection
3) Thermistor failure
4) Power board input circuit failure
2
Check whether the thermistor wiring
is disconnected or not.
Check the resistance of thermistor.
3
When the resistance is not below
value, replace the thermistor.
0; ·····180k'
10; ·····105k'
20; ·······63k'
30; ·······39k'
40; ·······25k'
21345678
Set the SW1 to
4
on
When the temperature in multi
controller board is not an actual
temperature, replace the power
board.
-81.0: Open
999.9: Short
44
Display
5201
Abnormal point and detecting method
Pressure sensor (63HS)
1
When detected pressure in high-pressure
sensor is 1 MPa or less during the
operation, the compressor stops and
restarts operation in 3 minutes.
2
When the detected pressure is 1 MPa or
less at just before of restarting, the
compressor stops due to detecting
abnormality. In this time, <5201> is
displayed.
3
For 3 minutes after starting compressor,
for defrosting, or for 3 minutes after
recover of defrosting, abnormality is not
detected as abnormality.
Causes
1) High-pressure sensor failure Check the high-pressure sensor.
2) Internal pressure decreases by gas
leakage
3) Connector contact failure or
disconnection
1
Check the internal pressure.
2
Check the high-pressure sensor.
3
Check points
Current sensor error
5300
Abnormal if current sensor detects –1.5A to
1.5A during compressor operation.
(This error is ignored in case of SW7-1 ON.)
6600Duplex address error
Detected error when transmission of unit
with the same address is confirmed.
Note) Address/Attribute displayed on the
remote controller shows the controller
detecting abnormality.
6602Transmission processor H/W error
'' 1 '' is shown on the transmission line
though the transmission processor
transmitted '' 0''.
Note) Address/Attribute displayed on the
remote controller shows the controller
detecting abnormality.
4) Multi controller board input circuit
failure
1) Disconnection of compressor wiring
2) Defective circuit of current sensor on
outdoor power circuit board
1) There are 2 units or more with the
same address among the outdoor
unit or indoor unit or lossnay
controller, remote controller.
2) When noise has occurred in the
transmission signal, and the signal
has changed.
1) When the wiring for either of the
indoor unit, the outdoor unit or
lossnay transmission line is
constructed or polarity is changed
with the power supply turned on,
the transmission waves change in
case that the transmission data
collides mutually. It causes to
detect error.
2) Transmission processor circuit
failure
3) When the transmission data has
changed by the noise.
Check the high-pressure sensor.
4
1 Correct the wiring (U·V·W phase) to
compressor.
(Outdoor power circuit board).
2 Replace outdoor power circuit board.
Look for the unit, which is source of
1
abnormality with the same address.
When the same address is found,
correct the address and turn off power
supply of outdoor unit, indoor unit,
and lossnay for 2 minutes or more as
the same time. Then, turn on power
supply.
Check the transmitted wave and the
2
noise on the transmission line.
1
When the transmission line is
constructed with the current flowed,
turn off power supply of outdoor unit,
indoor unit and lossnay for 2 minutes
or more as the same time. Then, turn
on power supply.
2
Check the transmitted wave and the
noise on the transmission line.
45
Display
6603Transmission bus busy error
Abnormal point and detecting method
1
Over error by collision1) The transmission processor cannot
Abnormality when the state, which cannot
be transmitted by collision of transmission,
is consecutive for 8 to 10 minutes.
Causes
be transmitted since a short cycle
voltage of the noise etc. mixes on
the transmission line consecutively.
Check points
1
Check whether the transmission line
of the indoor unit, fresh master,
lossnay and remote controller is
connected to the outdoor unit terminal
board (TB7) for centralized controller
or not.
6606
2
The state that data cannot to be output to
the transmission line by noise for 8 to 10
minutes consecutively.
Note) Address/Attribute displayed on the
remote controller shows the controller
detecting abnormality.
Signal communication error with
transmission processor
Signal communication error between unit
processor and transmission processor
Note) Address/Attribute displayed on the
remote controller shows the controller
detecting abnormality.
2) The transmission volume increases
and cannot be transmitted since the
wiring method is mistaken and the
routing technique to the terminal
board (TB3) for the transmission
line of the outdoor unit and the
terminal board (TB7) for centralized
control cannot be transmitted.
3) The share becomes high since the
data exists together to other
transmitted data by a defective
repeater (function which connects
and intercepts the transmission of
controlling system and centralized
control system), and it causes
abnormal detection.
1) Tha data of the unit/transmission
processor was not normally
transmitted due to accidental
disturbance such as noise and
lightening surge.
2) The address transmission from the
unit processor was not normally
transmitted by the hardware of
transmission processor defective.
2
Check whether the transmission line
with the other refrigerant system of the
indoor unit and lossnay is connected to
the outdoor unit terminal board (TB3)
for transmission or not.
3
Check whether the outdoor unit
terminal board for transmission line
(TB3) and for centralized controller
(TB7) are connected or not.
4
Check the transmitted wave and the
noise on the transmission line.
Turn off power supply of outdoor unit,
indoor unit, and lossnay for 2minutes
or more at the same time. Then, turn
on power supply. It normally recovers
from the malfunction that happens by
chance. When same abnormality
occurs again, it is defective of the
controller.
46
From the preceding page.
Display
6607
Abnormal point and detecting method
No ACK (Acknowledgement)
Abnormality which controller of the
1
sending side detects when there is no
answer (ACK) from other side though data
was transmitted once. It is detected 6
times every 30 seconds continuously.
Note) Address/Attribute displayed on the
remote controller shows the controller,
which did not send back replay (ACK).
Causes
Factor that not related to origin
1) Since the address switch was
changed with the passed current, the
unit in the last address does not exist.
2)
Decline of transmission voltage and
signal by transmission cable tolerance
over
· The furthest point···200m
· Remote controller cable···(12m)
(Refer to 8-3.)
3)
Decline of transmission cable voltage
and signal by unmatched kind of cable.
· Shield cable-CVVS,CPEVS
Cable diameter···1.25 e or more
4) Decline of transmission cable
voltage and signal by a number of
over-connected units.
5) Mis-operation of origin controller,
which happens accidentally
6) Origin controller defective
Check points
1
Turn off power supply of outdoor unit,
indoor unit fresh master and lossnay
for 2 minutes or more at the same
time. Then, turn on power supply. It
recovers normally at the malfunction
that happens accidentally.
2
Check the address switch in the
address, which occurs abnormality.
3
Check whether the transmission cable
is connected / loosen or not at origin.
(Terminal board or connector)
4
Check whether the transmission
cable tolerance is over or not.
Check whether the kind of
5
transmission cable is mistaken or not.
When there is any trouble from above
1-5, turn off power supply of outdoor
unit, indoor unit and lossnay for
2 minutes or more at the same time.
Then, turn on power supply.
1) When the cause of displayed address
and attribute is on the outdoor unit side.
(The indoor unit detects when there is no
reply (ACK) on transmitting from the
indoor unit to the outdoor unit.)
2) When the cause of displayed address
and attribute is on the indoor unit side.
1) Contact failure of outdoor unit or
indoor unit transmission cable.
2) Indoor unit transmission connector
(CN2M) disconnection.
3) Sending/receiving signal circuit
failure in the indoor/outdoor unit.
1) When operating with multi
refrigerant system indoor units, the
remote controller transmits the
signal to the indoor unit after the
other refrigerant system outdoor unit
is turned off or turned on again in
2 minutes, and detects abnormality.
2) Contact failure of remote controller
or indoor unit transmission cable
When there is not any trouble in
single refrigerant system (1outdoor
unit) from above1-5, controller is
defective in displayed address and
attribute.
When there is not any trouble in
different refrigerant system (2outdoor
unit or more) from above1-5,
determine it after 6.
6
When the address, which should not
exist, is an origin, since there is the
indoor unit which memorizes the
address data, cancel the unnecessary
address data by the manual setting
function of remote controller.
However, they are limited to the
system, which sets the group between
different refrigerant systems, or which
fresh master /lossnay are connected.
When there is not any trouble from
above 1-6, replace the displayed
address/attribute controller board.
In this time, when the error does not
recover to normal, the outdoor unit
multi controller board (repeater circuit)
defective is expected.
Check the recovery by replacing the
multi controller board one by one.
(The remote controller detects when
there is no reply (ACK) on transmitting
from the remote controller to the indoor
unit.)
3) Indoor unit transmission connector
(CN2M) disconnection
4) Sending/receiving signal circuit
failure in the indoor unit or remote
controller
Continued to the next page.
47
Display
Abnormal point and detecting method
Causes
Check points
6607
3) When the cause of displayed address
and attribute is on the remote controller
side
(The indoor unit detects when there is no
reply (ACK) on transmitting from the
indoor unit to the remote controller unit.)
4) When the cause of displayed address
and attribute is on the fresh master side
(The indoor unit detects when there is no
reply (ACK) on transmitting from the
indoor unit to the fresh master.)
1) When operating with multi
refrigerant system indoor units, the
indoor units transmits the signal to
the remote controller after the other
refrigerant system outdoor unit is
turned off or turned on again in
2 minutes, and detects abnormality.
2) Contact failure of remote controller
or indoor unit transmission cable.
3) Indoor unit transmission connector
(CN2M) disconnection.
4) Sending/receiving signal circuit
failure in the indoor unit or remote
controller.
1) When synchronized operation with
other refrigerant system fresh master,
the indoor units transmit the signal to
the fresh master after the fresh master
and same refrigerant system outdoor
unit is turned off or turned on again in
2 minutes, and detects abnormality.
5) When the cause of displayed address
and attribute is on the lossnay side
(The indoor unit detects when there is no
reply (ACK) on transmitting from the indoor
unit to the lossnay.)
2) Contact failure of fresh master or
indoor unit transmission cable
3) Indoor unit or fresh master
transmission connector (CN2M)
disconnection.
4) Sending/receiving signal circuit
failure in the indoor unit or fresh
master.
1) When the lossnay power supply is
Off, the indoor unit detects abnormality
at signal transmitting to the lossnay.
Continued to the next page.
48
From the previous page.
Display
6607
Abnormal point and detecting method
Causes
2) When synchronized operation with
lossnay in o
the
the
same
are turned
minutes, and
3) Contact failure of lossnay or indoor
unit transmission cable.
4) Indoor unit transmission connector
(CN2M) disconnection.
5) Sending/receiving signal circuit
failure in the indoor unit or lossnay.
ther refrigerant system,
indoor units transmit the signal to
lossnay after the lossnay and
refrigerant system outdoor unit
off or turned on again in 2
detects abnormality.
Check points
6608
6) When the controller of displayed
address and attribute is not recognized
No response
Though there was a reply (ACK) of
having received signal from the other
side, it is the abnormality when the
response command does not return.
The sending side detects the
abnormality continuously 6 times every
30 seconds.
Note) Address/Attribute displayed on the
remote controller shows the controller,
which did not response.
1) Since the address switch was
changed with the current passed, the
unit in the last address does not exist.
2) Since the fresh master/ lossnay
address are changed after
synchronized setting of fresh master/
lossnay by the remote controller,
abnormality is detected at
transmitting from the indoor unit.
1) Transmission repeats the failure by
the noise etc.
2) Decline of transmission voltage and
signal by transmission cable tolerance
over.
· The furthest point···200m
· Remote controller cable···(12m)
(Refer to 8-3.)
3) Decline of transmission line voltage
and signal by unmatched kind of cable.
· Shield wire-CVVS,CPEVS
wire diameter···1.25eor more
Check the transmission wave and
1
noise on the transmission cable.
Turn off power supply of outdoor unit,
2
indoor unit and lossnay for 2 minutes
or more at the same time. Then, turn
on power supply again. It recovers
normally at the malfunction that
happens by chance. When same
abnormality occurs again, it is defective
of displayed address and attribute.
4) Mis-operation of origin controller,
which happens by chance.
49
Display
6831
6834
6832
6833
7100
Abnormal point and detecting method
Signal reception(Remote controller)
Following symptoms are regarded as
abnormality.
1) When the remote controller cannot
receive the signal from indoor controller
normally even once for 3 minutes
2) When the remote controller cannot
receive the signal even once for 2 minutes
Signal transmission(Remote controller)
Following symptoms are regarded as
abnormality.
1) When sub-remote controller cannot
transmit the signal to the transmission
path for 6 minutes
2) When the remote controller cannot
finish transmitting the signal for 30
times on end
When connected total models of the
indoor units exceed the specified level
(130% of the outdoor unit models), error
code <7100> is displayed.
Causes
Defect of the transmission and reception
1
circuit of the remote controller.
Defect of the transmission and
2
reception circuit of the indoor controller
board
Noise occurs on the transmission cable
3
of the remote controller
All remote controllers are set as
4
sub-remote controller.
Defect of the transmission and
1
reception circuit of the remote controller
Noise occurs on the transmission cable
2
of the remote controller
There are 2 main remote controllers.
3
1) Connecting total models of the
indoor unit exceed the specified
level.
· PUMY-P100 ( ~ code 26)
· PUMY-P125 ( ~ code 33)
· PUMY-P140 ( ~ code 38)
Check points
1~3
Perform a check of the remote
controller.
According to the results, perform the
following process.
• When "RC OK" is displayed
The remote controller is normal.
Turn off the power supply and turn it
on again.
If "HO" is displayed for 4 minutes or
more, replace the indoor controller
board.
• When "RC NG" is displayed
Replace the remote controller.
• When "RC 6832 or 6833" or "ERC
00-66" is displayed
These displays may be due to noise,
etc.
4 Set one remote controller to main
remote controller and the other to
sub-remote controller.
1
Check the total models of connected
indoor unit.
Check the model code registration
2
switch (indoor controller board SW2)
of connected indoor unit.
2) There is a mistake in the registration
of model name code of the outdoor
unit.
Check the model code registration
switch (outdoor multi controller board
SW4) of the outdoor unit.
50
Display
Abnormal point and detecting method
7101Capacity code error
When the connected indoor unit models
cannot be connected, <7101> is displayed.
Causes
The indoor unit models is not possible
to connect.
[PUMY-P100/125/140VHM]
The indoor unit of 20-140(code 4-28)
is possible to connect.
[PUMY-P100/125/140VHMA]
The indoor unit of 15-40(Code 3-28) is
possible to connect.
Check points
Check the model code registration
1
switch (indoor controller board SW2)
in the connected indoor unit.
The outdoor unit SW1 operation can
2
check model code of the connected
indoor units.
Code of indoor unit No.1
Code of indoor unit No.2
Code of indoor unit No.3
Code of indoor unit No.4
Code of indoor unit No.5
Code of indoor unit No.6
Code of indoor unit No.7
on
on
on
on
on
on
on
21345678
21345678
21345678
21345678
21345678
21345678
21345678
7102Number of connecting unit over
When the number of connecting unit
exceeds limitations, error code <7102>
is displayed.
Even if the indoor unit is not connected,
becomes <7102> is display.
Number of connecting unit exceeds
limitations. It is assumed abnormality
excluding the following cases;
1) The indoor unit can be totally
connected up to 6(P100)/8(P125,
140) units.
2) Ventilation unit connecting is only
1 unit.
7105
Address setting error
Address setting of the outdoor unit is
wrong.
Addresses wrong setting of the outdoor
unit.
The outdoor unit is not set in 000 or in
the range of 51-100.
7111When an old type remote controller for
Remote controller sensor
In the case of M-NET remote controller,
it is an abnormality when incapable
M-NET is used, the remote controller
sensor is specified (SW1-1 is ON).
response returns from the M-NET remote
controller during the operation.
21345678
Code of indoor unit No.8
on
Check whether the connecting unit
exceeds a number of limitations or
not.
Check the address setting of the
outdoor unit. The address should be
set in 000 or 51-100.
When the setting is out of the range,
reset it, turn off power supply of the
outdoor unit, indoor unit and lossnay
for 2 minutes or more at the same
time, and turn on power supply again.
Replace the remote controller to
M-NET remote controller.
0403Serial communication error
Abnormal if serial communication between
outdoor multi board and outdoor power
board is defective.
1 Breaking of wire or contact failure of
connector CN2
2 Breaking of wire or contact failure of
connector CN4
3 Defective communication circuit of
outdoor power board
4 Defective communication circuit of
outdoor multi board for power board
51
12 Check connection of each
connector CN2, CN4.
3 Replace outdoor power board.
4 Replace outdoor multi board.
9-2. REMOTE CONTROLLER DIAGNOSIS
· MA remote controller is equipped with the diagnosis function
If the air conditioner cannot be operated from the remote controller, diagnose the remote controller as explained below.
1 First, check that the power-on indicator is lit.
If the correct voltage (DC12 V) is not supplied to the remote controller, the
indicator will not light.
If this occurs, check the remote controller's wiring and the indoor unit.
Power on indicator
2 Switch to the remote controller self-diagnosis mode.
Press the
change as shown below.
CHECK
button for 5 seconds or more. The display content will
3 Remote controller self-diagnosis result
[When the remote controller is functioning correctly]
Press the
[When the remote controller malfunctions]
(Error display 1) "NG" flashes. ➝ The remote controller's transmitting-receiv-
FILTER
button to start self-diagnosis.
ing circuit is defective.
Check for other possible causes, as there is no problem with the remote
controller.
[Where the remote controller is not defective, but cannot be operated.]
(Error display 2) [E3], [6833] or [6832] flashes.
There might be noise or interference on the transmission path, or the indoor unit
or other remote controllers are defective. Check the transmission path and other
controllers.
➝ Transmission is not possible.
4 To cancel remote controller diagnosis
Press the
approximately 30 seconds, the state in effect before the diagnosis will be restored.
CHECK
button for 5 seconds or more. Remote controller diagnosis will be cancelled, "PLEASE WAIT" and operation lamp will blink. After
The remote controller must be replaced with a new one.
(Error display 3)
The number of data errors is the difference between the number of bits sent from
the remote controller and the number actually transmitted through the transmission path. If such a problem is occurring, the transmitted data is affected by noise,
etc. Check the transmission path.
"ERC" and the number of data errors are displayed.
➝ Data error has occurred.
When the number of data errors is "02":
Transmission data from remote controller
Transmission data on transmission path
52
Symptom or inspection codeCauseInspection method and solution
Though the content of operation is
displayed on the remote
controller, some indoor units do
not operate.
• The power supply of the indoor unit is not on.
•
The address of the indoor units in same group or the remote controller
is not set correctly.
•
The group setting between outdoor units is not registered to the remote
controller.
• The fuse on the indoor unit controller board is blown.
• Check the part where the
abnormality occurs.
1 The entire system
2 In the entire refrigerant system
3 In same group only
4 1 indoor unit only
<In case of the entire system or in
the entire refrigerant system>
•
Check the self-diagnosis LED
of the outdoor unit.
• Check the items shown in the
left that are related to the
outdoor unit.
<In case of same group only or
1 indoor unit only>
• Check the items shown in the
left that are related to the
indoor unit.
Though the indoor unit operates,
the display of the remote controller
goes out soon.
• The power supply of the indoor unit is not on.
• The fuse on the indoor unit controller board is blown.
( ) is not displayed on the remote
controller.
(M-NET remote controller
is not fed.)
• The power supply of the outdoor unit is not on.
• The connector of transmission outdoor power board is not connected.
•
The number of connected indoor unit in the refrigeration system is over
the limit or the number of connected remote controller is over the limit.
•
M-NET remote controller is connected to MA remote controller cable.
• The transmission line of the indoor/outdoor unit is shorted or down.
• M-NET remote controller cable is shorted or down.
• Transmission of outdoor power board failure.
"HO" keeps being displayed or it
is displayed periodically. ("HO" is
usually displayed about 3 minutes
after the power supply of the
outdoor unit is on.)
• The power supply for the feeding expansion unit for the transmission
line is not on.
• The address of the outdoor unit remains "00".
•
The address of the indoor unit or the remote controller is not set correctly.
• MA remote controller is connected to the transmission line of the
indoor/outdoor unit.
The remote controller does not
operate though ( ) is displayed.
• The transmission line of the indoor/outdoor unit is connected to TB15.
• The transmission line of the indoor/outdoor unit is shorted, down or
badly contacted.
9-3. REMOTE CONTROLLER TROUBLE
Symptom or inspection codeCauseInspection method and solution
Though the content of operation is
displayed on the remote controller,
some indoor units do not operate.
( ) is not displayed on the remote
controller. (MA remote controller is
not fed.)
"PLEASE WAIT" keeps being displayed or it is displayed periodically.
("PLEASE WAIT" is usually displayed about 3 minutes after the
power supply of the outdoor unit is
on.)
The
remote controller does not
operate though ( ) is displayed.
• The power supply of the indoor unit is not on.
• Wiring between indoor units in same group is not finished.
• The indoor unit and Slim model are connected to same group.
• The fuse on the indoor unit controller board is blown.
• Check the part where the
abnormality occurs.
1 The entire system
2 In the entire refrigerant system
3 In same group only
4 1 indoor unit only
<In case of the entire system or in
the entire refrigerant system>
•
Check the self-diagnosis LED
of the outdoor unit.
• Check the items shown in the
left that are related to the
outdoor unit.
<In case of same group only or
1 indoor unit only>
• Check the items shown in the
left that are related to the
indoor unit.
Though the indoor unit operates,
the display of the remote
controller goes out soon.
• The power supply of the indoor unit (Master) is not on.
• In case of connecting the system controller, the setting of the system
controller does not correspond to that of MA remote controller.
• The fuse on the indoor unit (Master) controller board is blown.
The remote controller is not fed until the power supply of both indoor unit
and outdoor unit is on and the start-up of both units is finished normally.
• The power supply of the indoor unit is not on.
• The power supply of the outdoor unit is not on.
• The number of connected remote controller is over the limit
(Maximum: 2 units) or the number of connected indoor unit that is
over the limit (Maximum: 16 units).
•
The address of the indoor unit is "00" and the address for the outdoor
unit is the one other than "00".
•
The transmission line of the indoor/outdoor unit is connected to TB15.
• MA remote controller is connected to the transmission line of the
indoor/outdoor unit .
• The remote controller cable is shorted or down.
• The power supply cable or the transmission line is shorted or down.
• The fuse on the indoor unit controller board is blown.
• The power supply of the outdoor unit is not on.
• The power supply of the feeding expansion unit for the transmission
line is not on.
• The setting of MA remote controller is not main remote controller, but
sub-remote controller.
• MA remote controller is connected to the transmission line of the
indoor/outdoor unit
.
• The power supply of the indoor unit (Master) is not on.
• The transmission line of the indoor/outdoor unit is connected to TB15.
• The transmission line of the indoor/outdoor unit is shorted, down or
badly contacted.
•The fuse on the indoor unit controller board is blown.
STAND BY
DEFROST
(1) For M-NET remote controller systems
CENTRALLY CONTROLLED
CLOCK
CHECK
˚C
ERROR CODE
TEMP.
TIMER SET
ON OFF
1Hr.
NOT AVAILABLE
˚C
FILTER
CHECK MODE
TEST RUN
FUNCTION
ON/OFF
CHECK TEST
“ ” indicator: Appears when current is carried.
FILTER
(M-NET Remote controller)
(2) For MA remote controller systems
53
9-4. THE FOLLOWING SYMPTOM DO NOT REPRESENT TROUBLE (EMERGENCY)
Symptom
Even the cooling (heating)
operation selection button
is pressed, the indoor unit
cannot be operated.
The auto vane runs freely.
Fan setting changes during
heating.
Fan stops during heating
operation.
Fan does not stop while
operation has been
stopped.
No setting of fan while start
SW has been turned on.
Indoor unit remote
controller shows “HO” or
“PLEASE WAIT ” indicator
for about 2 minutes when
turning ON power supply.
Drain pump does not stop
while unit has been
stopped.
Drain pump does not stop
while unit has been
stopped.
Display of remote controller
"Cooling (Heating)" blinks
Normal display
Normal display
"Defrost "
Light out
STAND BY
“HO” blinks
“PLEASE WAIT” blinks
Light out
—
CAUSE
The indoor unit can not cool (heat) if other indoor units are heating
(cooling).
Because of the control operation of auto vane, it may change over
to horizontal blow automatically from the downward blow in cooling
in case the downward blow operation has been continued for 1
hour. At defrosting in heating, hot adjusting and thermostat OFF, it
automatically changes over to horizontal blow.
Ultra-low speed operation is commenced at thermostat OFF.
Light air automatically change over to set value by time or piping
temperature at thermostat ON.
The fan is to stop during defrosting.
Fan is to run for 1 minute after stopping to exhaust residual heat
(only in heating).
Ultra-low speed operation for 5 minutes after SW ON or until
piping temperature becomes 35°C. There low speed operate for 2
minutes, and then set notch is commenced. (Hot adjust control)
System is being driven.
Operate remote controller again after “HO” or “PLEASE WAIT”
disappears.
After a stop of cooling operation, unit continues to operate drain
pump for 3 minutes and then stops it.
Unit continues to operate drain pump if drainage is generated,
even during a stop.
54
9-5. INTERNAL SWITCH FUNCTION TABLE
PUMY-P100VHMPUMY-P125VHMPUMY-P140VHM
PUMY-P100VHMAPUMY-P125VHMAPUMY-P140VHMA
Switch
SWU1
1st digit
SWU2
2nd digit
Step
Rotary switch
Function
0
1
9
2
8
3
7
4
6
5
SWU2
(2nd digit)
SWU1
(1st digit)
Operation in Each Switch Setting
ONOFFWhen to Set
0
1
9
2
8
3
7
4
6
5
Before turning
the power on
Remarks
<Initial Setting>
0
1
9
2
8
3
7
4
6
5
SWU2
(2nd digit)
0
1
9
2
8
3
7
4
6
5
SWU1
(1st digit)
SW1 Digital
Display
Switching
SW2
Function
Switching
SW3 Trial
operation
Outdoor unit
SW4
Model
Switching
SW5
Function
switching
1~8
ON
OFF
1
Selects operating system startup
1
Connection Information Clear Switch
2
Abnormal data clear switch input
3
Pump down
4
5
Auto change over from Remote controller
6
1
ON/ OFF from outdoor unit
Mode setting
2
MODELS
PUMY-P100
1~6
1
2
3
4
5
6
PUMY-P125
PUMY-P140
Pressure limitation value change
Change the indoor unit's LEV opening at
start
Fixing the indoor units linear expansion
valve opening
Fix the operation frequency
Change the indoor unit's LEV opening
at defrost
Switching the target sub cool.
—
OFF
OFF
OFF
ON
ON
ON
SW4
123456
123456
123456
234567 8
With centralized
controller
Clear
Clear abnormal data
Run adjustment mode.
Enable
ON
Heating
Enable
Enable
FixNormal
FixNormal
Enable
Enable
—
Can be set
either during
operation or not.
Without centralized
controller
Do not clear
Normal
Normal
Disable
Before turning the
power on
OFF to ON any time after
the power is turned on.
During compressor
running
Before turning
the power on
——
OFF
Cooling
Normal
Normal
Normal
Normal
Any time after the
power is turned on.
Before the power
is turned on.
Can be set when off
or during operation
OFF to ON during compressor running.
Can be set when off
or during operation
<Initial Setting>
ON
OFF
1
234567 8
<Initial Setting>
ON
OFF
1
23456
<Initial Setting>
ON
OFF
<Initial Setting>
Set for each capacity.
<Initial Setting>
ON
OFF
1
234567 8
During the FAN or COOL mode, and thermo-OFF
or stop in heating operation, set the opening of
7
linear expansion valve on indoor unit
w1
Active
Inactive
During the FAN or COOL mode, and thermo-OFF
8
in heating operation, set the opening of linear expansion valve on indoor unit
w2
ActiveInactive
w1 SW5-7 Refrigerant shortage amount is measured during heating operation.
(Refrigerant piping is long etc.)
w2 SW5-8 Countermeasure against room temperature rise for indoor unit in FAN, COOL, and thermo-OFF (heating) mode.
1
2
55
Switch
Step
Function
Operation in Each Switch Setting
ONOFFWhen to Set
Remarks
SW6
function
switching
Outdoor unit
SW7
function
switching
SW8
function
switching
1
Switch of current limitation reading
2
in a different way
3
Restriction of maximum
4
frequency
Ignore refrigerant filling
5
abnormality
Switching the target discharge
6
pressure (Pdm)
Switching (1) the target evaporation
7
temperature (ETm)
Switching (2) the target evaporation
8
temperature (ETm)
Ignore current sensor
1
abnormality
2
3
4
5
Forced defrost
6
Silent mode/ Demand Control
1
Selection (see next page)
2
Change of defrosting control
—
—
—
—
—
—
—— —
Enable
—— —
Enable
Enable
Enable
Enable
Enable
Enable
—
—
—
—
Forced defrostNormal
Demand Control
Enable
(For high humidity)
Normal
Normal
Normal
Normal
Normal
Normal
Normal
Silent
mode
Normal
Before turning the
power on.
Can be set when
off or during
operation
Before turning the
power on.
—
—
—
—
During compressor
running in heating
mode.
Can be set when
off or during
operation
<Initial Setting>
ON
OFF
1
234567 8
<Initial Setting>
—
ON
OFF
1
23456
<Initial Setting>
ON
OFF
1
2
56
9-6. OUTDOOR UNIT INPUT/OUTPUT CONNECTOR
CN51
X
5
4
3
AC
D
5
E
1
1
3
B
G
Y
L
1 : Error display lamp
L
2 : Compressor operation lamp
X, Y : Relay (Coil standard of 0.9W or less for DC 12V)
F
AC
D
E
B
G
F
CN3N
X
Y
SW1
SW2
1
2
3
X, Y : Relay (DC1mA)
SW1
SW2
ON
Heating
Validity of SW1
OFF
Cooling
Invalidity of SW1
SW1
SW2
ON
Heating
Validity of SW1
OFF
Cooling
Invalidity of SW1
1
3
AC
D
E
B
G
F
CN3D
X
Y
SW1
SW2
1
2
3
The silent mode and the demand control are selected by switching
the Dip switch 8-1 on outdoor controller board.
It is possible to set it to the following power sonsumption (compared with ratings) by
setting SW1,2.
Silent mode
Silent mode operation
Outdoor controller board DIP SW8-1
SW1 SW2Function
Demand control
OFF
ON
ON
OFF
ON
—
OFF
OFF
ON
OFFONON
100%
75%
50%
0%
(Normal)
(Stop)
A Distant control board
B Relay circuit
C External output adapter (PAC-SA88HA-E)
D Outdoor unit control board
A Remote control panel
B Relay circuit
C External input adapter (PAC-SC36NA)
D Outdoor unit control board
E Relay power supply
F Procure locally
G Max. 10m
A Remote control panel
B Relay circuit
C External input adapter (PAC-SC36NA)
D Outdoor unit control board
E Relay power supply
F Procure locally
G Max. 10m
E Lamp power supply
F Procure locally
G Max. 10m
~
~
Y
X
Y
X
~
Y
X
L1
L2
● State (CN51)
● Auto change over (CN3N)
● Silent Mode / Demand Control (CN3D)
57
9-7. HOW TO CHECK THE PARTS
PUMY-P100VHMPUMY-P125VHMPUMY-P140VHM
PUMY-P100VHMAPUMY-P125VHMAPUMY-P140VHMA
Parts name
Thermistor (TH3)
<Outdoor pipe>
Thermistor (TH4)
<Discharge>
Thermistor (TH6)
<
Low pressure saturated
temperature>
Thermistor (TH7)
<Outdoor>
Thermistor (TH8)
<Heatsink>
Fan motor(MF1,MF2)
Solenoid valve coil
<Four-way valve>
(21S4)
Motor for compressor
(MC)
U
Check points
Disconnect the connector then measure the resistance with a tester.
(At the ambient temperature 10:~30:)
Normal
TH4
TH3
TH6
TH7
TH8
Refer to next page.
Measure the resistance between the terminals with a tester.
(At the ambient temperature 20
Measure the resistance between the terminals with a tester.
(Winding temperature 20:)
160k"~410k"
4.3k"~9.6k"
39k"~105k"
:
)
Normal
NormalAbnormal
Abnormal
Open or short
Abnormal
Open or short1435±150"
V
W
Solenoid valve coil
<Bypass valve>
(SV1)
0.188"
Measure the resistance between the terminals with a tester.
(At the ambient temperature 20:)
Normal
1197±10"
Open or short
Abnormal
Open or short
58
Check method of DC fan motor (fan motor / outdoor controller circuit board)
Notes
1
· High voltage is applied to the connecter (CNF1, 2) for the fan motor. Give attention to the service.
· Do not pull out the connector (CNF1, 2) for the motor with the power supply on.
(It causes trouble of the outdoor controller circuit
Self check
2
Symptom : The outdoor fan cannot turn around.
Fuse check
Check the fuse (F500) on outdoor
controller board.
board and fan motor.)
Did the fuse blow?
No
Wiring contact check
Contact of fan motor connector (CNF1, 2)
Is there no contact failure?
Yes
Power supply check(Remove the connector (CNF1, 2))
Measure the voltage in the outdoor controller circuit
TEST POINT
1 :VDC (between 1 (+) and 4 (-) of the fan connector):
Yes
No
Replace outdoor controller board (MULTI.B.) (C.B)
and fan motor (MF1, 2).
Recover wiring.
board.
VDC DC280-340V (When ACTM stops), DC350V (When ACTM is operating)
TEST POINT2 :VCC (between 5 (+) and 4 (-) of the fan connector): VCC DC15V
CNLVB(Only VHMA)
Connect to the outdoor
noise filter circuit board
(CN52C)1–6 : DC12V
63L
Low pressure switch
CN3N
Auto change over
(external signal input)
63H
High presser switch
CN3D
Input of demand control
TH4 Thermistor
<Discharge>
SW2
Pump down
SW3
Test run
SW7
Forced defrost
SW4
Model select
CN51
External signal
output
CN102
Connect to the M-P.B
(Transmission power board)
CN40,CN41
Centralized control power
supply/ For storing
jumper connector selection
CN52
Transmission wire of
centralized control
CNS1
Indoor/ outdoor unit
connecting wire
CN2
Connect to the outdoor
power circuit board
1-5:
Power circuit board ➔
Transmitting signal to
the multi controller board
(0-5V DC)
2-5: Zero cross signal
(0-5V DC)
3-4: Not used
6-5: 16V DC
7-5: 16V DC
CNAC
Power supply for multi
controller board
TH3 Thermistor
<Outdoor pipe>
TH7/ 6 Thermistor
<Outdoor/ Saturation temperature of suction pressure>
63HS
High presser sensor
VFG
(Voltage between left pins of
PC511 and PC512, pin1
and pin2) :
(Same as CNF1,2 7(+)–4(-))
VSP
(Voltage between pins of
C515 and C516) :
DC0V (when stopped)
DC1–6.5V (when operated)
(Same as CNF1,2 6(+)–4(-))
(Voltage between pins of
C510) : DC280V-350V
(Same as CNF1,2 1(+)–4(-))
F1, F2
FUSE 6.3A
SV1
Bypass valve
21S4
4-way valve
VCC (TEST POINT2)
(Voltage between pins of
C82A) : DC15V
(Same as CNF1,2 5(+)–4(-))
52C
52C relay signal
CNDC
DC280V-350V
(1(+)–3(-))
61
Outdoor power circuit board
PUMY-P100VHM
PUMY-P125VHM
PUMY-P140VHM
PUMY-P100VHMA
PUMY-P125VHMA
PUMY-P140VHMA
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
S - P1 , T - P1 , S - N1 , T - N1
2.Check of IGBT circuit
P2 - U , P2 - V , P2 - W , N2 - U , N2 - V , N2 - W
Note:The marks, L , N , N1 , N2 , P1 , P2 , U , V and W
shown in the diagram are not actually printed on the board.
CN2
Connect to the outdoor controller circuit board
(CN2)
1-5:Transmitting signal to the outdoor
controller circuit board (0~5V DC)
2-5:Zero cross signal (0~5V DC)
3-4:18V DC
6-5:16V DC
7-5:16V DC
CN3
Thermistor (TH8)
<Heatsink>
CN5
Detection of primary
current
Connect to the
outdoor noise filter
circuit board (CN5)
CNDC
280V-350V DC (1+, 3–)
Connect to the outdoor
controller circuit board
TABS/T
Connect to the outdoor
noise filter circuit board
Voltage among
phases:220-240V AC
TABN1/SC-N1
Connect to the ACTM(-)
TABP1/SC-P1
Connect to 52C
CN4
Connect to the
outdoor controller
circuit board
(CN4)
TABP2/SC-P2
Connect to the
ACTM(P)
TABU/V/W
Connect to the compressor (MC)
Voltage among phases:10V~180V AC
CNAC2
220-240V AC
(Connect to the
outdoor controller
circuit board
(CNAC))
CN5
52C driving signal (Connect to
the outdoor
controller circuit
board(CNLVB))
RS1
LO, NO
Voltage of
220-240V AC is output (Connect to the
outdoor power
circuit board)
CNAC1
220-240V AC
(Connect to the
M-NET power
circuit board
(M-P.B.))
EI
Connect to
the earth
E2
Connect to the
earth
CN5
Primary current
(Connect to the
outdoor power
circuit board
(CN5))
LI, NI
Voltage of 220-240V AC is input
(Connect to the terminal block(TB1))
64
Transmission power board
PUMY-P100VHMPUMY-P125VHMPUMY-P140VHM
PUMY-P100VHMAPUMY-P125VHMAPUMY-P140VHMA
CN2
Connect to the outdoor multi
controller board
1-2: 24–30V DC
3-4: 24–30V DC
CN1
Connect to the outdoor
noise filter circuit board
1–3 : 220–240V AC
65
Active filter module
DCL
L1L2
ACTM
P
I
N1
N2
(+)
(-)
Load
+
PUMY-P100VHM
PUMY-P125VHM
PUMY-P140VHM
–
Connect to the
outdoor power
circuit
board(TABN1)
+
Connect to the 52C
L1, L2
Connect to the DCL(Reactor)
Connect to the outdoor
power circuit
board(CNAF)
1: GND
2-1 : 15V DC
3-1 : Control signal
4, 5 : Not used
6-1 : Control signal
I
Not used
N2
Connect to the
outdoor power
circuit
board(TABN2)
Connection and internal circuit diagram
P
Connect to the outdoor power circuit
board(TABP2)
N1
Non-connect
66
Active filter module
+
DCL
L1L2
ACTM
P
Io
N1
N2
(+)
(- )
Load
PUMY-P100VHMA
PUMY-P125VHMA
PUMY-P140VHMA
L1, L2
Connect to the
DCL(Reactor)
Upper
side
P
Connect to the outdoor power
circuit board(TABP2)
N1
Non-connect
Lower
side
+
Connect to the
outdoor power
circuit
board(TABP1)
Connect to the outdoor
–
power circuit board(TABN1)
Connection and internal circuit diagram
Connect to the outdoor
power circuit
board(CNAF)
1: GND
2-1 : 15V DC
3-1 : Control signal
4, 5 : Not used
6-1 : Control signal
N2
Non-connect
lo
Connect to the outdoor
power circuit board(TABN2)
67
9-10. OUTDOOR UNIT FUNCTIONS
0
1
2
3
4
5
6
7
8
9
1011121314
15
16
17
18
192021
222324
25
2627282930
SW1 setting
12345678
00000000
10000000
01000000
11000000
00100000
10100000
01100000
11100000
00010000
10010000
01010000
11010000
00110000
10110000
01110000
11110000
00001000
10001000
01001000
11001000
00101000
10101000
01101000
11101000
00011000
10011000
01011000
11011000
00111000
10111000
01111000
Relay output display
Check display
Indoor unit check status
Protection input
Protection input
Protection input
Abnormality delay display 1
Abnormality delay display 2
Abnormality delay display 3
Abnormality delay history 1
Abnormality delay history 2
Abnormality delay history 3
Abnormality code history 2
Abnormality code history 3
Abnormality code history 4
Abnormality code history 5
Abnormality code history 6
Abnormality code history 7
Abnormality code history 8
Abnormality code history 9
Cumulative time
Cumulative time
Outdoor unit operation display
Indoor unit operation mode
Indoor unit operation display
Capacity code (No. 1 indoor unit)
Capacity code (No. 2 indoor unit)
Capacity code (No. 3 indoor unit)
Capacity code (No. 4 indoor unit)
Capacity code (No. 5 indoor unit)
1
Compressor operation
No.1 unit check
2
52C
No.2 unit check
3
21S4
No.3 unit check
4
SV1
No.4 unit check
Over capacity
7
No.7 unit check
5
(SV2)
No.5 unit check
6
No.6 unit check
TH6 abnormality delay
8
Lighting always
No.8 unit check
TH8 abnormality
ON: light on OFF: light off
•When abnormality occurs, check display.
Check: light on Normal: light off
Display input microprocessor
protection (abnormality)
Display all abnormalities
remaining in abnormality
delay
Display all abnormalities
remaining in abnormality
delay history
•Display abnormalities up to
present (including abnormality
terminals)
•History record in 1 is the
latest; records become older
in sequence; history record
in 10 is the oldest.
Display of cumulative
compressor operating time
Thermo ON : light on Thermo OFF : light off
•Display of indoor unit
capacity code
•The No. 1 unit will start from
the address with the lowest
number
Notes
Alternating display of addresses
0000-9999 and abnormality code
(including abnormality delay code)
0~9999(unit::1-hour)
0~9999(unit::10-hour)
0~255
Excitation Current
No.1 unit mode
No.1 unit operation
Restart after 3 minutes
No.2 unit mode
No.2 unit operation
Compressor operation
No.3 unit mode
No.3 unit operation
Abnormality(detection)
No.4 unit mode
No.4 unit operation
No.5 unit mode
No.5 unit operation
No.6 unit mode
No.6 unit operation
No.7 unit mode
No.7 unit operation
No.8 unit mode
No.8 unit operation
0000~9999 (Alternating display of addresses and error code)
Display mode
Display on the LED1, 2 (display data)
No.
Delay code
1202
1205
1211
1214
1221
Delay code
1402
1600
1601
4320
4330
4350
Abnormality delay
Discharge temperature abnormality
Discharge temperature sensor (TH4) abnormality
Outdoor pipe temperature sensor (TH3) abnormality
Heatsink thermistor (TH8) abnormality
Outside air temperature sensor (TH7) abnormality
Abnormality delay
High-pressure abnormality
Pressure sensor (63HS) abnormality
Over charge refrigerant abnormality
Insufficient refrigerant abnormality
Heatsink temperature abnormality
Power module abnormality
Abnormality in the
number of indoor units
High-pressure
abnormality delay
High-pressure
abnormality delay
High-pressure
abnormality
Address double
setting abnormality
TH4
abnormality
delay
TH4
abnormality delay
Current sensor
abnormality
TH3 abnormality
delay
Saturation temperature of suction pressure
sensor (TH6) abnormality
Frequency converter insufficient
wiring voltage abnormality
Cooling : light on Heating: light flashing
Stop fan: light off
Abnormality code history 10
(the oldest)
Abnormality code history 1
(the latest)
Indoor unit
address error
Outdoor unit
address error
Current sensor
abnormality delay
Current sensor
abnormality delay
Heatsink
overheating
Over current interception
TH4 abnormality
TH3 abnormality
Outdoor fan rotational
frequency abnormality
TH7 abnormality
Heatsink
overheating delay
Heatsink
overheating delay
SHd(low discharge temperature)
abnormality
SHd(low discharge temperature)
abnormality delay
Over current interception
delay
Over current
interception delay
Discharge temperature
abnormality
Indoor unit
capacity error
Discharge temperature
abnormality delay
Voltage abnormality
delay
Discharge temperature
abnormality delay
Voltage abnormality
delay
Insufficient refrigerant
amount abnormality
Insufficient refrigerant
amount abnormality delay
Frozen protection delay
Insufficient refrigerant
amount abnormality delay
Frozen protection delay
TH3 abnormality
delay
Power module
abnormality delay
Power module
abnormally delay
Low-pressure
abnormality
Outdoor fan rotational fre-
quency abnormality delay
Low-pressure
abnormality delay
TH6 abnormality
delay
Outdoor fan rotational
frequency abnormality delay
Low-pressure
abnormality delay
63HS abnormality
Current sensor
open/short
TH7 abnormality
delay
63HS abnormality
delay
Current sensor
open/short delay
TH7 abnormality
delay
63HS abnormality
delay
Current sensor
open/short delay
start over current
interception abnormality
serial communication
abnormality
start over current inter-
ception abnormality delay
communication(POWER
BOARD)abnormality delay
start over current inter-
ception abnormality delay
communication(POWER
BOARD)abnormality delay
start over current inter-
ception abnormality delay
SHd(low discharge temperature)
abnormality delay
Voltage abnormality
start over current inter-
ception abnormality delay
SW:setting
0....OFF
1....ON
68
Notes
•Display of indoor unit
operating mode
8
7
Input: light off No input: light on
Light on/light off
Display of communication demand capacity
3-min.delay/no
6
Heating
thermo
OFF
Excitation current/no
5
Heating
thermo
ON
P93:Silent
CN3D1-2 input
Refrigerant pull back/no
4
Cooling
thermo
OFF
P94:Demand
CN3D1-3 input
DEFROST/NO
Display on the LED1, 2 (display data)
3
Cooling
thermo
ON
Abnormal/Normal
P95:Undefined
CN3S1-2 input
2
Fan
P96:Autochange
over fixed mode
CN3N1-2 input
Heating/Cooling
Freeze
prevention
control
Max. Hz
Correction of
high compression
LEV opening
correction
LEV opening
correction
Min.Sj
correction
SHd decrease
control
ratio prevention
Discharge
pressure(heating)
Backup
depends on Td
Discharge
temp.(heating)
Backup
depends on Pd
Max. Hz
control
depends on Td
Discharge
temperature
prevention
control
Power module
abnormality
TH6 abnormality
Frequency restrain
of receipt voltage
change
Frozen protection
Input current
control
Secondary
current control
Hz control by discharge temperature limitation
Content
Max.Hz limitation when power supply on
Hz control by bypass valve
Max.Hz correction control due to voltage decrease
Secondary current control
1
Display mode
IC1 operation mode
SW1 setting
11111000
12345678
3132333435
No.
OFF
IC2 operation mode
IC3 operation mode
00000100
10000100
ON/OFF
IC4 operation mode
IC5 operation mode
OC operation mode
11000100
01000100
00100100
36
0~255
0000~9999 (unit : o10)
0~999.9 (A)
0~999.9 (A)
P97:Autochange
over permission
CN3N1-3 input
External connection status
Communication demand capacity
Number of compressor ON/OFF
11100100
01100100
10100100
37
38394041424344
0000~9999 (unit : o10)
Compressor operating current
Input current of outdoor unit
Thermo ON operating time
00010100
11010100
10010100
01010100
0~255
0~255 (Max. 8 unit)
0~999.9 (V)
Td over heat
prevention
Discharge
pressure
control
Total capacity of thermo on
Number of indoor units
DC bus voltage
State of LEV control
State of compressor
frequency control 1
11110100
10110100
45
01110100
46
47
00110100
69
Heatsink
over heat pre-
State of compressor
frequency control 2
00001100
48
0~999.9[Arms]
vention control
Protection input
The second current value when
micro computer of POWER
BOARD abnormality is detected
The radiator panel temperature
10001100
01001100
49
50
-99.9~999.9(Short/Open:-99.9 or 999.9)
when microcomputer of POWER
BOARD abnormality is detected
Discharge pressure controlHz control by pressure limitation
State of compressor frequency(Hz) control (Words)
SV control
Discharge temperature control
Max.Hz control
Abnormal rise of Pd controlControl that restrains abnormal rise of discharge pressure
Heatsink over heat prevention controlHeatsink over heat prevention control
Secondary current control
Input current controlInput current control
Hz correction of receipt voltage decrease prevention
Hz restrain of receipt voltage changeMax.Hz correction control due to receipt voltage change
11001100
51
Notes
Display of actual operating frequency
Display of target frequency
Display of number of outdoor
fan control steps (target)
Display of opening pulse of
indoor LEV
8
7
6
5
4
Display of outdoor subcool
(SC) data and detection data
from high-pressure sensor and
each thermistor
Display on the LED1, 2 (display data)
3
2
1
0~FF(16 progressive)
0~255
Display mode
Operational frequency
Target frequency
SW1 setting
12345678
00000010
10000010
64
No.
65
0~15
Outdoor fan control step number
01000010
66
0~2000
IC1 LEV Opening pulse
IC2 LEV Opening pulse
IC3 LEV Opening pulse
IC4 LEV Opening pulse
11100010
01100010
10100010
69
70
00010010
7172737475
-99.9 ~ 999.9
2
IC5 LEV Opening pulse
High-pressure sensor (Pd) kgf/cm
TH4(Td) ˚C
TH6(ET) ˚C
TH7(Outdoor-temp.) ˚C
TH3(Outdoor pipe) ˚C
00110010
10110010
76
777880
01110010
10010010
11010010
01010010
-99.9 ~ 999.9
TH8(Power module) ˚C
IC1 TH23(Gas) ˚C
00001010
10001010
818283
(When the indoor unit is not connected, it is displayed as"0".)
IC2 TH23(Gas) ˚C
IC3 TH23(Gas) ˚C
IC4 TH23(Gas) ˚C
IC5 TH23(Gas) ˚C
IC1 TH22(Liquid) ˚C
IC2 TH22(Liquid) ˚C
IC3 TH22(Liquid) ˚C
IC4 TH22 (Liquid) ˚C
IC5 TH22 (Liquid) ˚C
IC1 TH21(Intake) ˚C
IC2 TH21 (Intake) ˚C
IC3 TH21 (Intake) ˚C
IC4 TH21 (Intake) ˚C
11001010
01001010
00101010
84
11101010
01101010
10101010
858687
00011010
10011010
01011010
888990
11011010
919293
00111010
10111010
01111010
94
-99.9 ~ 999.9
IC5 TH21 (Intake) ˚C
Outdoor SC (cooling) ˚C
11111010
00000110
95
96
70
Display of target
subcool
step data
Display of indoor SC/SH data
Display of discharge superheat data
Display of all control target data
Display of detection data from
high-pressure sensor and each
thermistor
Display of actual frequency at time of abnormality delay
Display of fan step number at time of abnormality delay
Display of opening pulse of indoor LEV
at time of abnormality delay
Display on the LED1, 2 (display data)
-99.9 ~ 999.9
during heating: subcool (SC)/during cooling: superheat (SH)
-2~4
-99.9~999.9
Pdm(0.0~30.0)
ETm(-2.0~23.0)
SCm(0.0~20.0)
SCm/SHm(0.0~20.0)
-99.9~999.9 [˚F]
0.0~711.0 [PSIG]
-99.9~999.9 [˚F]
0~FF(16 progressive)
0~15
0~2000
979899
100
101
102
103
105
106
107
108
109
110
111
112
121
122
123
124
125
126
128
129
131
132
133
134
135
Target subcool step
IC1 SC/SH ˚C
IC2 SC/SH ˚C
IC3 SC/SH ˚C
IC4 SC/SH ˚C
IC5 SC/SH ˚C
Discharge superheat (SHd) ˚C
Target Pd display (heating) kgf/F
Target ET display (cooling) ˚C
Target outdoor SC (cooling)˚C
Target indoor SC/SH (IC1)˚C
Target indoor SC/SH (IC2)˚C
Target indoor SC/SH (IC3)˚C
Target indoor SC/SH (IC4)˚C
Target indoor SC/SH (IC5)˚C
TH4 (Td) ˚F
TH3 (Outdoor pipe) ˚F
TH6 (ET) ˚F
TH7 (Outdoor temp.) ˚F
High pressure sensor (Pd) PSIG
TH8 (Power module) ˚F
Actual frequency of abnormality delay
Fan step number at time of abnormality delay
IC1 LEV opening pulse abnormality delay
IC2 LEV opening pulse abnormality delay
IC3 LEV opening pulse abnormality delay
IC4 LEV opening pulse abnormality delay
IC5 LEV opening pulse abnormality delay
1
2
3
45
678
Display mode
No.
Notes
SW1 setting
12345678
10000110
01000110
11000110
00100110
10100110
01100110
11100110
10010110
01010110
11010110
00110110
10110110
01110110
11110110
00001110
10011110
01011110
11011110
00111110
10111110
01111110
00000001
10000001
11000001
00100001
10100001
01100001
11100001
71
Display of data from high-pressure sensor,
all thermistors, and SC/SH at time of
abnormality delay
78
Display on the LED1, 2 (display data)
2345 6
1
2
cm
/
kgf
-99.9 ~ 999.9
Display of detection data from each
indoor thermistor
-99.9 ~ 999.9 [˚F]
(When the indoor unit is not connected, it is displayed as"32".)
Display mode Notes
High-pressure sensor data at time of abnormality delay
TH4 sensor data at time of abnormality delay ˚C
TH6 sensor data at time of abnormality delay ˚C
12345678
00010001
10010001
136
01010001
137
138
SW1 setting
No.
TH3 sensor data at time of abnormality delay ˚C
TH8 sensor data at time of abnormality delay ˚C
11010001
00110001
139
140
OC SC (cooling) at time of abnormality delay ˚C
IC1 SC/SH at time of abnormality delay ˚C
01110001
10110001
141
142
IC2 SC/SH at time of abnormality delay ˚C
IC3 SC/SH at time of abnormality delay ˚C
11110001
00001001
143
144
IC4 SC/SH at time of abnormality delay ˚C
IC5 SC/SH at time of abnormality delay ˚C
IC1 TH21 Intake ˚F
11001001
10001001
01001001
145
146
147
IC2 TH21 Intake ˚F
IC3 TH21 Intake ˚F
IC4 TH21 Intake ˚F
IC5 TH21 Intake ˚F
11101001
00101001
148
01101001
10101001
149
150
151
72
IC6 TH21 Intake ˚F
IC7 TH21 Intake ˚F
IC8 TH21 Intake ˚F
IC1 TH23 Gas ˚F
00011001
152
10011001
153
01011001
154
11011001
155
IC2 TH23 Gas ˚F
IC3 TH23 Gas ˚F
IC4 TH23 Gas ˚F
10111001
157
01111001
158
00111001
156
IC5 TH23 Gas ˚F
IC6 TH23 Gas ˚F
IC7 TH23 Gas ˚F
11111001
00000101
10000101
159
160
161
IC8 TH23 Gas ˚F
01000101
162
Display of version data of ROM
Display of ROM type
Display of check sum code of ROM
Display of detection data from each
indoor liquid pipe thermistor
78
Display on the LED1, 2 (display data)
23456
1
-99.9 ~ 999.9 [˚F]
(When the indoor unit is not connected,it is displayed as"32".)
Over
Voltage
Under
voltage
CT sensor
disconn-
ection
Display of actual frequency at time of abnormality
Display of fan step number at time of abnormality
Display of opening pulse of indoor LEV
at time of abnormality
0~FF(16progressive)
0~20
0~2000
Display of data from high-pressure sensor
and all thermistors at time of abnormality
Display of data from SC/SH and all
thermistors at time of abnormality
-99.9 ~ 999.9
Display mode Notes
ROM version monitor
ROM type
Check Sum code
11010101
12345678
SW1 setting
No.
170
00110101
01010101
171
172
IC1 TH22 Liquid ˚F
IC2 TH22 Liquid ˚F
IC3 TH22 Liquid ˚F
IC4 TH22 Liquid ˚F
11110101
01110101
10110101
173
174
175
00001101
176
IC5 TH22 Liquid ˚F
IC6 TH22 Liquid ˚F
IC7 TH22 Liquid ˚F
IC8 TH22 Liquid ˚F
01001101
178
11001101
179
00101101
180
10001101
177
4220 Error history
Actual frequency at time of abnormality
Fan step number at time of abnormality
IC1 LEV opening pulse at time of abnormality
IC2 LEV opening pulse at time of abnormality
IC3 LEV opening pulse at time of abnormality
IC4 LEV opening pulse at time of abnormality
IC5 LEV opening pulse at time of abnormality
10111101
189
00000011
192
10000011
193
11000011
195
00100011
196
197
11100011
01100011
10100011
198
199
73
High-pressure sensor data at abnormality kgf/F
00010011
200
TH4 sensor data at time of abnormality˚C
10010011
201
TH6 sensor data at time of abnormality˚C
01010011
202
TH3 sensor data at time of abnormality˚C
11010011
203
TH8 sensor data at time of abnormality˚C
00110011
204
IC1 SC/SH at time of abnormality˚C
01110011
206
IC2 SC/SH at time of abnormality˚C
11110011
207
IC3 SC/SH at time of abnormality˚C
00001011
208
IC4 SC/SH at time of abnormality˚C
10001011
209
IC5 SC/SH at time of abnormality˚C
01001011
210
Display of indoor unit capacity mode
78
Display of indoor unit operating mode
Heating
Heating
Cooling
Display of opening pulse of indoor LEV
OFF
thermo
ON
thermo
OFF
thermo
Display of data from high-pressure sensor,
all thermistors, and outdoor SC
Display of indoor SC/SH data
Display of all control target data
Display of opening pulse of indoor LEV
at time of abnormality
Display of SC/ SH data at time of
abnormality
Display of opening pulse of indoor LEV
at time of abnormality
Display of SC/ SH data at time of
abnormality
Display on the LED1, 2 (display data)
2345 6
1
0~255
Display mode Notes
IC6 Capacity code
IC7 Capacity code
IC8 Capacity code
ON
thermo
Cooling
OFFFan
IC6 operation mode
IC7 operation mode
0~2000
IC8 operation mode
IC6 LEV opening pulse
IC7 LEV opening pulse
IC8 LEV opening pulse
IC6 TH23(Gas) ˚C
IC7 TH23(Gas) ˚C
IC8 TH23(Gas) ˚C
IC6 TH22(Liquid) ˚C
-99.9 ~ 999.9
(When the indoor unit is not connected, it is displayed as"0".)
IC7 TH22(Liquid) ˚C
IC8 TH22(Liquid) ˚C
IC6 TH21(Intake) ˚C
IC7 TH21(Intake) ˚C
-99.9 ~ 999.9
IC8 TH21(Intake) ˚C
IC6 SC/SH˚C
IC7 SC/SH ˚C
during heating:subcool (SC)/during cooling:superheat (SH)
SCm/SHm (0.0~14.0)
IC8 SC/SH ˚C
IC6 target SC/SH˚C
IC7 target SC/SH ˚C
0~2000
IC8 target SC/SH˚C
IC6 LEV opening pulse at abnormality delay
IC7 LEV opening pulse at abnormality delay
-99.9 ~ 999.9
IC8 LEV opening pulse at abnormality delay
IC6 SC/SH at abnormality delay˚C
IC7 SC/SH at abnormality delay˚C
IC8 SC/SH at abnormality delay˚C
IC6 LEV opening pulse at time of abnormality
0~2000
IC7 LEV opening pulse at time of abnormality
-99.9 ~ 999.9
IC8 LEV opening pulse at time of abnormality
IC6 SC/SH at abnormality˚C
IC7 SC/SH at abnormality˚C
IC8 SC/SH at abnormality˚C
11001011
12345678
SW1 setting
No.
211
212
11101011
01101011
214
215
00011011
216
00101011
10101011
213
10011011
217
01011011
218
11011011
219
00111011
220
10111011
221
01111011
222
223
00000111
224
10000111
225
01000111
226
11000111
227
00100111
228
10100111
229
01100111
230
11100111
231
00010111
232
10010111
233
01010111
234
11010111
235
00110111
236
11111011
10110111
237
01110111
238
11110111
239
00001111
240
10001111
241
01001111
242
11001111
243
00101111
244
10101111
245
01101111
246
74
10ELECTRICAL WIRING
Outdoor unit
Indoor unit
Grounded
Grounded
Pull box
Breaker for Wiring
and Current Leakage
Power supply
single phase
50Hz 220-230-240V
60Hz 220V
Breaker for Wiring
and Current Leakage
Power supply
single phase
50Hz 220-230-240V
60Hz 220V
(1) Use a separate power supply for the outdoor unit and indoor unit.
(2) Bear in mind ambient conditions (ambient temperature, direct sunlight, rain water,etc.) when proceeding with the wiring and connections.
(3) The wire size is the minimum value for metal conduit wiring. The power cord size should be 1 rank thicker consideration of voltage drops.
Make sure the power-supply voltage does not drop more than 10 %.
(4) Specific wiring requirements should adhere to the wiring regulations of the region.
(5) Power supply cords of parts of appliances for outdoor use shall not be lighter than polychloroprene sheathed flexible cord (design 245 IEC57).
For example, use wiring such as YZW.
(6) Install an earth longer than other cables.
Warning:
· Be sure to use specified wires to connect so that no external force is imparted to terminal connections. If connections are not fixed firmly,
it may cause heating or fire.
· Be sure to use the appropriate type of overcurrent protection switch. Note that generated overcurrent may include some amount of direct
current.
Caution:
· Some installation site may require attachment of an earth leakage breaker. If no earth leakage breaker is installed, it may cause an electric
shock.
· Do not use anything other than breaker and fuse with correct capacity. Using fuse and wire or copper wire with too large capacity may cause a
malfunction of unit or fire.
32 A 30 mA 0.1 sec. or less
15 A 30 mA 0.1 sec. or less
32 A
15 A
5.5(6)
1.5
5.5(6)
1.5
Indoor Unit
Main Cable
Minimum Wire Thickness (mm2)
Branch
Breaker for Current Leakage
Model
Outdoor Unit
P100-140
–
1.5
Breaker for
Wiring*1
Ground
~/N AC 220/230/240V 50Hz
~/N AC 220V 60Hz
~/N AC 220/230/240V 50Hz
~/N AC 220V 60Hz
Power Supply
*2
This chapter provides an introduction to electrical wiring for the CITY MULTI-S series, including notes concerning power wiring,
wiring for control (transmission wires and remote controller wires), and the frequency converter.
10-1. OVERVIEW OF POWER WIRING
10-2. WIRE DIAMETER AND MAIN POWER SWITCH CAPACITY
10-2-1. Wiring diagram for main power supply
10-2-2. Power supply wire diameter and capacity
*1. Abreaker with at least 3.0mm contact separation in each pole shall be provided. Use earth leakage breaker (NV).
*2. Max. Permissive system Impedance : 0.22(")
75
10-3. DESIGN FOR CONTROL WIRING
Outdoor
unit
Power supply
Single phase
50Hz 220-230-240V
60Hz 220V
Power supply
Single phase.
50Hz 220-230-240V
60Hz 220V
Grounded
Group operation
Remote controller wire
Pull box
Indoor unit
Breaker for Wiring
and Current Leakage
15A Breaker for Wiring
and Current Leakage
[1.6mm ✕ 2
[1.6mm ✕ 2
0.5~1.25mm
2
✕ 2
1.25mm
2
✕ 2
Kind of remote control cable
Cable diameter
2-core cable (unshielded)
0.3 to 1.25 mm
2
Please note that the types and numbers of control wires needed by the CITY MULTI-S series will depend on the remote
controllers and whether they are linked with the system.
10-3-1. Selection number of control wires
M-NET remote controller
Use
Remote controller ➔ indoor unit
Wires connecting ➔ indoor units
Wires connecting ➔ indoor units with outdoor unit
Wires connecting ➔ outdoor units
wires
Transmission
10-3-2. Control signal wires
● Transmission wires
• Types of transmission cables : Shielding wire CVVS or CPEVS.
• Cable diameter : More than 1.25 mm
2
• Maximum wiring length : Within 200 m
10-3-3. M-NET Remote controller wiring
Remote controller used in system control operations.
• Group operation involving different refrigerant systems.
• Linked operation with upper control system.
2 wires (non-polar)
Kind of remote control cable
Cable diameter
Remarks
Shielding wire MVVS
0.5 to 1.25 mm
2
When cable exceeds 10m, use cable with the same
specifications as 10-3-2.
10-3-4. MA Remote control cables
10-4. SYSTEM SWITCH SETTING
In order to identify the destinations of signals to the outdoor units, indoor units, and remote controller of the MULTI-S
series, each microprocessor must be assigned an identification number (address). The addresses of outdoor units, indoor
units, and remote controller must be set using their settings switches. Please consult the installation manual that comes with
each unit for detailed information on setting procedures.
10-5. EXAMPLE EXTERNAL WIRING DIAGRAM FOR A BASIC SYSTEM
10-5-1. Example using a M-NET remote controller
76
10-6. METHOD FOR OBTAINING ELECTRICAL CHARACTERISTICS WHEN A CAPACITY
AGREEMENT IS TO BE SIGNED WITH AN ELECTRIC POWER COMPANY
The electrical characteristics of connected indoor unit system for air conditioning systems, including the MULTI-S
series, will depend on the arrangement of the indoor and outdoor units.
First read the data on the selected indoor and outdoor units and then use the following formulas to calculate the electrical
characteristics before applying for a capacity agreement with the local electric power company.
10-6-1. Obtaining the electrical characteristics of a CITY MULTI-S series system
(1) Procedure for obtaining total power consumption
Page numbers in this technical manual
Total power consumption of each indoor unit
✻1 Power consumption of outdoor unit
Total power consumption of system
✻1 Please note that the power consumption of the outdoor unit will vary depending on the total capacity of the selected
indoor units.
(2) Method of obtaining total current
Total current through each indoor unit
✻2 Current through outdoor unit
current through system
Total
✻2 Please note that the
(3) Method of obtaining system power factor
Use the following formula and the total power and current obtained in parts 1 and 2 on the previous page to calculate the
system power factor.
current through the outdoor unit will vary depending on the total capacity of the selected indoor units.
System power factor =
See the technical manual of each indoor unit
Standard capacity table— Refer to 5-2.
See the technical manual of each indoor unit
Page numbers in this technical manual
See the technical manual of each indoor unit
Standard capacity table— Refer to 5-2.
See the technical manual of each indoor unit
(Total system power consumption)
(Total system current x voltage)
Power consumption
1
2
1+2 <kW>
Subtotal
1
2
1+2 <A>
o 100%
10-6-2. Applying to an electric power company for power and total current
Calculations should be performed separately for heating and cooling employing the same methods; use the largest
resulting value in your application to the electric power company.
77
11REFRIGERANT PIPING TASKS
Line-Branch Method
Connection Examples
(Connecting to Four Indoor Units)
Liquid Line
Gas Line
Piping Diameter (mm)Model
PUMY-P100-140
Liquid Line (mm)Gas Line (mm)
{15.88{9.52
Liquid Line
Gas Line
Liquid Line
Gas Line
Piping Diameter (mm)
Model number
50 or lower
63 to 140
{6.35
{12.7
{9.52
{15.88
Outdoor Unit
First Branch
Indoor unit
A
B
C
A+B+C+D+a+b+c+d+e [ 120m
A+B+C+D+e [ 80m
B+C+D+e [ 30m
30 meters or less (If the outdoor unit is lower, 20 meters or less)
12 meters or less
Use an optional branch piping kit (CMY-Y62-G-E).
Total Piping Length
Farthest Piping Length
Farthest Piping Length After First Branch
Height Difference in Indoor/Outdoor Section
Height
Difference in Indoor/Indoor Section
Permissible
Length
Permissible High/
Low Difference
(L)
(R)
(H)
(h)
■ Selecting the Refrigerant Branch Kit
■ Select Each Section of Refrigerant Piping
■ Additional refrigerant charge
Select the size from the right table.
(1) Refrigerant Piping Diameter in Section
From Outdoor Unit to First Branch
(Outdoor Unit Piping Diameter)
(1) Section From Outdoor Unit
to First Branch (A)
(2) Sections From Branch to
Indoor Unit (a,b,c,d)
(3) Section From Branch to
Branch (B,C,D)
(3) Refrigerant Piping Diameter in Section
From Branch to Branch
(2) Refrigerant Piping Diameter in Section
From Branch to Indoor Unit
(Indoor Unit Piping Diameter)
• Refrigerant of 3kg equivalent to 50m total
extended piping length is already charged
when the outdoor unit is shipped.
Thus, if the total extended piping length is
50m or less, there is no need to charge with
additional refrigerant.
• If the total extended piping length exceeds
50m, calculate the required additional
refrigerant charge using the procedure
shown on the right.
• If the calculated additional refrigerant charge
is a negative amount, do not charge with any
refrigerant.
<Additional Charge>
<Example> Outdoor model : 125
Indoor 1 : 63 A : {9.52 10ma : {9.5215m
2 : 40 b : {6.3510m
3 : 25 c : {6.3510m
4 : 20d : {6.3520m
The total length of each liquid line is as follows;
{9.52 : A + B + C + a = 10 + 10 + 10 + 15 = 45m
{6.35 : b + c + d = 10 +10 + 20 = 40m
Connection Examples
(Connecting to Five Indoor Units)
A
Note:Pipe re-branching after the header branching
is not possible.
A
C
B
H
B
C
1
c
3
DDD
L
R
b
a
D
Note:The total of downstream unit models in the
table is the total of models as seen from point
A in the figure below.
E
A
de
4
2
G
5
A
Outdoor unit
B
First branching (branching
joint)
h
C
Branching joint
D
Indoor unit
E
D
Branching header
F
To downstream unit
G
Blind caps
F
Permissible
Length
Permissible High/
Low Difference
Farthest Piping Length
Farthest Piping Length After First Branch
Height Difference in Indoor/Outdoor Section
Height
Difference in Indoor/Indoor Section
■ Selecting the Refrigerant Branch Kit
■ Select Each Section of Refrigerant Piping
(1) Section from Outdoor Unit
to First Branch (A)
(2) Sections from Branch to
Indoor Unit (a,b,c,d,e)
(3) Section From Branch to
Branch (B,C)
Select the size from the right table.
■Additional refrigerant charge
• Refrigerant of 3kg equivalent to 50-m total
extended piping length is already charged
when the outdoor unit is shipped.
Thus, if the total extended piping length is
50m or less, there is no need to charge with
additional refrigerant.
• If the total extended piping length exceeds
50m, calculate the required additional
refrigerant charge using theprocedure shown
on the right.
• If the calculated additional refrigerant charge
is a negative amount, do not charge with any
refrigerant.
Total Piping Length
A+B+C+a+b+c+d+e is 120 meters or less
(L)
A+B+b is 80 meters or less
(R)
B+b is 30 meters or less
(H)
30 meters or less (If the outdoor unit is lower, 20 meters or less)
(h)
12 meters or less
Please select branching kit, which is sold separately, from the table below.
(The kit comprises sets for use with liquid pipes and for use with gas pipes.)
Branch joint
CMY-Y62-G-E
(1) Refrigerant Piping Diameter in Section
From Outdoor Unit to First Branch (Outdoor Unit Piping Diameter)
Piping Diameter (mm)Model
PUMY-P100-140
Liquid Line
Gas Line
Branch header (4 branches)
CMY-Y64-G-E
(2) Refrigerant Piping Diameter in Section
From Branch to Indoor Unit (Indoor Unit
Piping Diameter)
All refrigerant of this system will leak out to this
room if there is leakage at this indoor unit.
Direction
of refrigerant flow
Outdoor unit
11-2-1. Introduction
R410A refrigerant of this air conditioner is non-toxic and
non-flammable but leaking of large amount from an indoor
unit into the room where the unit is installed may be deleterious.
To prevent possible injury, the rooms should be large
enough to keep the R410A concentration specified by KHK :
(a high pressure gas safety association) installation guidelines S0010 as follows.
(2) Calculate room volumes (K) and find the room
with the smallest volume
The part with represents the room with the smallest
volume.
(a) Situation in which there are no partitions
Outdoor unit
✻Maximum concentration
Maximum refrigerant concentration of R410A of a room
is 0.30 kg/K accordance with the installation guidelines.
To facilitate calculation, the maximum concentration is
expressed in units of O/K ( kg of R410A per K)
Maximum concentration of R410A: 0.3O/K
(KHK installation guidelines S0010)
11-2-2. Confirming procedure of R410Aconcentration
Follow (1) to (3) to confirm the R410A concentration and
take appropriate treatment, if necessary.
Indoor unit
(b) There are partitions, but there are openings that allow
the effective mixing of air.
Outdoor unit
Indoor unit
Opening
Wall
(c) If the smallest room has mechanical ventilation appara-
tus that is linked to a household gas detection and
alarm device, the calculations should be performed for
the second smallest room.
(Situation in which there
are no door openings or
in which there are openings above and blow
doors that occupy at
least 0.15% of the floor
area)
(1) Calculate total refrigerant amount by each refrig-
erant system.
Total refrigerant amount is precharged refrigerant
amount at ex-factory plus additional charged
amount at field installation.
Note:
When single refrigeration system is consists of several
independent refrigeration circuit, figure out the total refrigerant amount by each independent refrigerant circuit.
Outdoor unit
Ventilation apparatus
Indoor unit
The smallest
room
The second
smallest room
(3) Use the results of calculations (1)and (2) to calcu-
late the refrigerant concentration:
Total refrigerant in the refrigerating unit (O)
The smallest room in which an indoor
unit has been installed (K)
If the calculation results do not exceed the maximum concentration, perform the same calculations for the larger second
and third room, etc., until it has been determined that nowhere
will the maximum concentration be exceeded.
[ maximum concentration(O/K)
Maximum concentration of R410A:0.3O/K
81
12DISASSEMBLY PROCEDURE
OUTDOOR UNIT : PUMY-P100VHMPUMY-P125VHMPUMY-P140VHM
PUMY-P100VHMA PUMY-P125VHMAPUMY-P140VHMA
OPERATING PROCEDURE
1. Removing the service panel and top panel
(1) Remove 3 service panel fixing screws (5 ✕ 10) and slide
the hook on the right downward to remove the service
panel.
(2) Remove screws (3 for front, 3 for rear/5 ✕ 10) of the top
panel and remove it.
2. Removing the fan motor (MF1, MF2)
(1) Remove the service panel. (See figure 1.)
(2) Remove the top panel. (See figure 1.)
(3) Remove 5 fan grille fixing screws (5 ✕ 10) to detach the
fan grille. (See figure 1.)
(4) Remove a nut (for right handed screw of M6) to detach
the propeller. (See photo 1.)
(5) Disconnect the connectors, CNF1 and CNF2 on Multi
controller board in electrical parts box.
(6) Remove 4 fan motor fixing screws (5 ✕ 25) to detach the
fan motor. (See photo 2.)
Figure 1
Grille
fixing
screws
Grille
fixing
screws
Photo 1
Nut
PHOTOS & ILLUSTRATION
Top panel fixing screws
Slide
Front panel
Propeller
Photo 2
Fan motor fixing screws
Top panel
Service panel
Fan grille
Service panel
fixing screws
Fan
motor
3. Removing the electrical parts box
(1) Remove the service panel. (See figure 1.)
(2) Remove the top panel. (See figure 1.)
(3) Disconnect the connecting wire from terminal block.
(4) Remove all the following connectors from Multi controller board;
fan motor, thermistor <Outdoor pipe>, thermistor
<Discharge>, thermistor <Low pressure saturated temp>,
thermistor <Outdoor>, high pressure switch, high pressure
sensor, low pressure switch, 4-way valve coil and bypass
valve coil.
Pull out the disconnected wire from the electrical parts box.
<Diagram symbol in the connector housing>
(5) Remove the terminal cover and disconnect the compressor
lead wire.
Fan motor fixing screws
Photo 3
Electrical
parts box
Multi controller
board (MULTI.B)
Terminal block
(TB3) (TB7)
Terminal block
(TB1)
Valve bed
Compressor (MC)
Terminal cover
Cover panel
(Front)
82
Cover panel
fixing screws
Continued to the next page.
From the previous page.
OPERATING PROCEDURE
(6) Remove electrical parts box fixing screw (4 ✕ 10) and
detach the electrical parts box by pulling it upward. The
electrical parts box is fixed with 2 hooks on the left and 1
hook on the right.
4. Removing the thermistor <Low pressure saturated temp.>
(TH6)
(1) Remove the service panel. (See figure 1.)
(2) Remove the top panel. (See figure 1.)
(3) Disconnect the connectors, TH6 and TH7 (red), on the
Multi controller board in the electrical parts box.
(4) Loosen the wire clamps on top of the electrical parts box.
(5) Pull out the thermistor <Low pressure saturated temp.>
(TH6) from the sensor holder.
Note: In case of replacing thermistor <Low pressure
saturated temp.> (TH6), replace it together with
thermistor <Outdoor> (TH7) since they are
combined together.
Refer to No.5 below to remove thermistor
<Outdoor(TH7)>.
Photo 4
Photo 5
PHOTOS & ILLUSTRATION
Electrical parts box
Electrical parts
box fixing screw
Thermistor <TH6>Electrical parts box
5. Removing the thermistor <Outdoor> (TH7)
(1) Remove the service panel. (See figure 1.)
(2) Remove the top panel. (See figure 1.)
(3) Disconnect the connector TH7 (red) on the Multi controller
board in the electrical parts box.
(4) Loosen the wire clamps on top of the electrical parts box.
(See photo 4.)
(5) Pull out the thermistor <Outdoor> (TH7) from the sensor
holder.
Note: In case of replacing thermistor <Outdoor> (TH7),
replace it together with thermistor <Low pressure
saturated temp> (TH6), since they are combined
together.
Refer to No.4 above to remove thermistor <Low
pressure saturated temp>.
Photo 6
Thermistor <Outdoor> (TH7)
Lead wire of thermistor <Outdoor> (TH7)
PUMY-P100/125/140VHM
Sensor holder
PUMY-P100/125/140VHMA
Sensor holder
83
OPERATING PROCEDURE
6. Removing the thermistor <Outdoor pipe> (TH3) and
thermistor <Discharge> (TH4)
(1) Remove the service panel. (See figure 1.)
(2) Disconnect the connectors, TH3 (white) and TH4 (white),
on the Multi controller board in the electrical parts box.
(3) Loosen the clamp for the lead wire in the rear of the
electrical parts box.
(4) Pull out the thermistor <Outdoor pipe> (TH3) and
thermistor <Discharge> (TH4) from the sensor holder.
PHOTOS
Photo 7
Thermistor
<Outdoor pipe>
(TH3)
7. Removing the 4-way valve coil (21S4)
(1) Remove the service panel. (See figure 1.)
(2) Remove the top panel. (See figure 1.)
[Removing the 4-way valve co il]
(3) Remove 4-way valve coil fixing screw (M4 ✕ 6).
(4) Remove the 4-way valve coil by sliding the coil toward you.
(5) Disconnect the connector 21S4 (green) on the Multi
controller board in the electrical parts box.
8. Removing the 4-way valve
(1) Remove the service panel. (See figure 1.)
(2) Remove the top panel. (See figure 1.)
(3) Remove 3 valve bed fixing screws (4 ✕ 10) and 4 ball
valve and stop valve fixing screws (5 ✕ 16) and then
remove the valve bed.
(4) Remove 4 right side panel fixing screw (5 ✕ 10) in the
rear of the unit and then remove the right side panel.
(5) Remove the 4-way valve coil. (See photo 8.)
(6) Recover refrigerant.
(7) Remove the welded part of four-way valve.
Note 1: Recover refrigerant without spreading it in the air.
Note 2: The welded part can be removed easily by remov-
ing the right side panel.
Note 3: When installing the four-way valve, cover it with a
wet cloth to prevent it from heating (120°C or more),
then braze the pipes so that the inside of pipes
are not oxidized.
Photo 8
4-way valve coil
fixing screw
Compressor
(MC)
4-way valve coil (21S4)
Thermistor
<Discharge>
(TH4)
4-way valve
Thermistor
<Low pressure
saturated temp.>
(TH6)
84
OPERATING PROCEDURE
9. Removing bypass valve coil (SV1) and bypass valve
(1) Remove the service panel. (See figure 1.)
(2) Remove the top panel. (See figure 1.)
(3) Remove 3 right side panel fixing screws (5 ✕ 10) in the
rear of the unit and remove the right side panel.
(4) Remove the bypass valve coil fixing screw (M4 ✕ 6).
(5) Remove the bypass valve coil by sliding the coil upward.
(6) Disconnect the connector SV1 (white) on the Multi
controller circuit board in the electrical parts box.
(7) Recover refrigerant.
(8) Remove the welded part of bypass valve.
PHOTOS
Photo 9
Note 1: Recover refrigerant without spreading it in the air.
Note 2: The welded part can be removed easily by
removing the right side panel.
10. Removing the high pressure switch (63H) and
low pressure switch (63L)
(1) Remove the service panel. (See figure 1.)
(2) Remove the top panel. (See figure 1.)
(3) Remove the electrical parts box. (See photo 4.)
(4) Remove 3 right side panel fixing screws (5 o 10) in the
rear of the unit and remove the right side panel.
(5) Pull out the lead wire of high pressure switch and low
pressure switch.
(6) Recover refrigerant.
(7) Remove the welded part of high pressure switch and low
pressure switch.
Note 1: Recover refrigerant without spreading it in the air.
Note 2: The welded part can be removed easily by remov-
ing the right side panel.
Note 3: When installing the high pressure switch and low
pressure switch, cover them with a wet cloth to
prevent them from heating (100°C or more), then
braze the pipes so that the inside of pipes are not
oxidized.
High pressure
switch (63H)
Bypass valve
coil fixing screw
Bypass valve
coil (SV1)
Bypass valve
High pressure
sensor (63HS)
Photo 10
11. Removing the high pressure sensor (63HS)
(1) Remove the service panel. (See figure 1.)
(2) Remove the top panel. (See figure 1.)
(3) Remove the electrical parts box. (See photo 4.)
(4) Remove 3 right side panel fixing screws (5 o 10) in the
rear of the unit and remove the right side panel.
(5) Pull out the lead wire of high pressure sensor.
(6) Recover refrigerant.
(7) Remove the welded part of high pressure sensor.
Note 1: Recover refrigerant without spreading it in the air.
Note 2: The welded part can be removed easily by remov-
ing the right side panel.
Note 3: When installing the high pressure sensor, cover it
with a wet cloth to prevent it from heating (100°C
or more), then braze the pipes so that the inside
of pipes are not oxidized.
85
High pressure
sensor (63HS)
Low pressure
switch (63L)
OPERATING PROCEDURE
PHOTOS
12. Removing the compressor (MC)
(1) Remove the service panel. (See figure 1.)
(2) Remove the top panel. (See figure 1.)
(3) Remove 2 front cover panel fixing screws (5 ✕ 10) and
remove the front cover panel. (See photo 3.)
(4) Remove 2 back cover panel fixing screws (5 ✕ 10) and
remove the back cover panel.
(5) Remove the electrical parts box. (See photo 4.)
(6) Remove 3 valve bed fixing screws (4 ✕ 10) and 4 ball valve
and stop valve fixing screws (5 ✕ 16) and then remove the
valve bed.
(7) Remove 3 right side panel fixing screw (5 ✕ 10) in the rear
the separator.
(9) Recover refrigerant.
(10) Remove the 3 compressor fixing nuts for motor using
spanner or adjustable wrench.
(11) Remove the welded pipe of motor for compressor inlet
and outlet and then remove the compressor.
Note: Recover refrigerant without spreading it in the air.
13. Removing the accumulator
(1) Remove the service panel. (See figure 1.)
(2) Remove the top panel. (See figure 1.)
(3) Remove 2 front cover panel fixing screws (5 ✕ 10) and
remove the front cover panel. (See photo 3.)
(4) Remove 2 back cover panel fixing screws (5 ✕ 10) and
remove the back cover panel.
(5) Remove the electrical parts box. (See photo 4.)
(6) Remove 3 valve bed fixing screws (4 ✕ 10) and 4 ball valve
and stop valve fixing screws (5 ✕ 16) and then remove the
valve bed.
(7) Remove 3 right side panel fixing screw (5 ✕ 10) in the
rear of the unit and then remove the right side panel.
(8) Recover refrigerant.
(9) Remove 4 welded pipes of power receiver inlet and outlet.
(10) Remove 2 receiver leg fixing screws (4 ✕ 10).
(See photo 13.)
Photo 11
Valve bed fixing
screw
Compressor
(MC)
Photo 12
Valve bed
Separator
Separator
fixing screw
Valve bed
fixing
screws
Accumulator
Compressor
fixing nut
Inlet
Outlet
Accumulator
Note: Recover refrigerant without spreading it in the air.
F.ST SCREW
SIDE PANEL (L)
FAN GRILLE
FRONT PANEL
SEPARATOR
BASE ASSY
MOTOR SUPPORT
VALVE BED ASSY
HANDLE
COVER PANEL (FRONT)
COVER PANEL (REAR)
SIDE PANEL (R)
SERVICE PANEL
LABEL (MITSUBISHI)
REAR GUARD
TOP PANEL
HANDLE
Q'ty/set
(5✕10)
13PARTS LIST (non-RoHS compliant)
13-1. STRUCTURAL PARTS
PUMY-P125VHM
87
26
25
27
30
29
28
21
24
23
22
1
2
3
10
11
12
13
14
15
16
17
18
19
20
18
4
7
8
9
5
6
13-2. FUNCTIONAL PARTS
PUMY-P125VHM
88
Part numbers that are circled are not shown in the figure.
F.ST SCREW
SIDE PANEL (L)
FAN GRILLE
FRONT PANEL
SEPARATOR
BASE ASSY
MOTOR SUPPORT
VALVE BED ASSY
HANDLE
COVER PANEL (FRONT)
COVER PANEL (REAR)
SIDE PANEL (R)
SERVICE PANEL
LABEL (MITSUBISHI)
REAR GUARD
TOP PANEL
HANDLE
HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO100-8310, JAPAN
cCopyright 2006 MITSUBISHI ELECTRIC ENGINEERING CO., LTD.
Distributed in Jan. 2008 No. OC376 REVISED EDITION-B PDF 9
Distributed in Aug. 2006 No. OC376 REVISED EDITION-APDF 8
Distributed in Mar. 2006 No. OC376 PDF 9
Made in Japan
New publication, effective Jan. 2008
Specifications subject to change without notice
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