15. PARTS LIST ·······················································79
Model name
indication
16. OPTIONAL PARTS ······························BackCover
····6
···················17
PUHZ-RP8YHA
PUHZ-RP10YHA
Page 2
1SAFETY PRECAUTION
Use new refrigerant pipes.
Make sure that the inside and outside of refrigerant piping is clean and it has no contamination
such as sulfur hazardous for use, oxides, dirt,
shaving particles, etc.
In addition, use pipes with specified thickness.
Store the piping to be used during installation
indoors and keep both ends of the piping sealed
until just before brazing. (Leave elbow joints, etc.
in their packaging.)
Use ester oil, ether oil or alkylbenzene oil (small
amount) as the refrigerant oil applied to flares
and flange connections.
In case of using the existing pipes for R22, be careful with
the followings.
· Change flare nut to the one provided with this product.
Use a newly flared pipe.
· Avoid using thin pipes.
Charge refrigerant from liquid phase of gas
cylinder.
If the refrigerant is charged from gas phase, composition
change may occur in refrigerant and the efficiency will be
lowered.
Do not use refrigerant other than R410A.
If other refrigerant (R22 etc.) is used, chlorine in refrigerant can cause deterioration of refrigerant oil etc.
Use a vacuum pump with a reverse flow check
valve.
Vacuum pump oil may flow back into refrigerant cycle and
that can cause deterioration of refrigerant oil etc.
Use the following tools specifically designed for
use with R410A refrigerant.
The following tools are necessary to use R410A refrigerant.
Keep the tools with care.
If dirt, dust or moisture enter into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of compressor.
Do not use a charging cylinder.
If a charging cylinder is used, the composition of refrigerant will change and the efficiency will be lowered.
Flare tool
Electronic refrigerant
charging scale
Vacuum pump adaptor
Size adjustment gauge
Gauge manifold
Torque wrench
Gas leak detector
Charge hose
Tools for R410A
Contamination inside refrigerant piping can cause deterioration of refrigerant oil etc.
If dirt, dust or moisture enter into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of compressor.
If large amount of mineral oil enter, that can cause deterioration of refrigerant oil etc.
Ventilate the room if refrigerant leaks during
operation. If refrigerant comes into contact with
a flame, poisonous gases will be released.
1-1. CAUTIONS RELATED TO NEW REFRIGERANT
Cautions for units utilizing refrigerant R410A
2
Page 3
[1] Cautions for service
(1) Perform service after collecting the refrigerant left in unit completely.
(2) Do not release refrigerant in the air.
(3) After completing service, charge the cycle with specified amount of refrigerant.
(4) When performing service, install a filter drier simultaneously.
Be sure to use a filter drier for new refrigerant.
[2] Additional refrigerant charge
When charging directly from cylinder
· Check that cylinder for R410A on the market is syphon type.
· Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.)
Unit
Gravimeter
[3] Service tools
Use the below service tools as exclusive tools for R410A refrigerant.
No.Specifications
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 R410ATop of cylinder (Pink)
8Refrigerant recovery equipment
specifications
Cylinder with syphon
. (UNF1/2)
3
Page 4
1-2. CHANGED POINT
Measure the existing pipe thickness and check
for damage.
The existing pipe thickness meets specifications and the pipes are not damaged.
The existing pipe thickness does not meet
specifications or the pipes are damaged.
Check if the existing air conditioner can operate.
The existing air conditioner can operate.The existing air conditioner cannot operate.
After operating the cooling system for about
30 minutes, do a pump down work.
Use a refrigerant collecting device to collect the refrigerant.
Check the oil condition when collecting the refrigerant.
Oil is clean. (Clear to brownish color)
Oil is dirty. (Black color)
When the compressor bearings are
glazed, rotation scratches are present,
or the compressor breaks down, iron
particles or oil deterioration will blacken
the oil.
Disconnect the existing air conditioner from
the pipes.
The existing piping can be reused.
After flaring the pipes again, connect the
new air conditioner.
The existing pipes cannot be reused.
Use new pipes.
Perform the following inspections: air
tightness test, vacuum dryness (additional
refrigerant charge), gas leakage check
Replacement operation
Test operation
Replacement operation is the operation by which impurities remaining in
the existing piping (chlorinated compounds) are captured by the activated
carbon filter (replacement filter) in the outdoor unit.
• This model will automatically begin the replacement operation after it has been
installed when it enters the initialization phase for normal heating or cooling. However , the unit will not automatically perf orm the replacement operation if it is moved
to a new location where it will be used with existing R22 refrigerant piping. Under
such conditions, always use the SW8-2 operations to perform the replacement
operation before beginning the test operation.
• Precautions when reusing existing R22 refrigerant pipes
(1) Flowchart
Connecting a new air conditioner to existing R22 refrigerant pipes
1 Flare the pipe for the use with R410A refrigerant.
Use the flare nut attached to indoor and outdoor unit of the new air conditioner only.
2 When reusing existing R22 refrigerant pipes of which gas pipe is [28.58mm and, in addition, when the outdoor unit is
installed to lower position than the indoor unit, be sure to change the setting of the DIP SW8-1 on the controller circuit
board of the outdoor unit to ON.
✽ This is to increase the speed of refrigerant passing in the gas pipe so that refrigerant oil can smoothly flow in the system.
• Use a different-diameter joint or brazing for the connection.
3 When reusing standard-size existing R22 refrigerant pipes.
The pipes can be reused with pipe length restriction described on 12-1.
Bender
Pipe cutter
Welder and nitrogen gas cylinder
Refrigerant charging scale
Vacuum gauge or thermistor vacuum gauge and
vacuum valve
Charging cylinder
Air purge and refrigerant charge
Operation check and the two above
Gas leak check
Collection of refrigerant
Refrigerant charge
Apply to flared section
Prevent compressor malfunction
when charging refrigerant by
spraying liquid refrigerant
Prevent gas from blowing out
when detaching charge hose
Vacuum drying and air
purge
Flaring work of piping
Bend the pipes
Cut the pipes
Weld the pipes
Charge refrigerant
Check the degree of vacuum. (Vacuum
valve prevents back flow of oil and refrigerant to thermistor vacuum gauge)
Charge refrigerant
Tool exclusive for R410A
Tool exclusive for R410A
Tool for HFC refrigerant
Tool exclusive for R410A
Tool exclusive for R410A
Ester oil and alkylbenzene
oil (minimum amount)
Tool exclusive for R410A
Tool exclusive for R410A
Tools for other refrigerants can
be used if equipped with adopter for reverse flow check
Tools for other refrigerants
can be used by adjusting
flaring dimension
Tools for other refrigerants can be used
Tools for other refrigerants can be used
Tools for other refrigerants can be used
Tools for other refrigerants can be used
Tools for other refrigerants
can be used
Tool exclusive for R410A
Tools and materialsUseR410A toolsCan R22 tools be used?
(Usable if equipped
with adopter for rever se flow)
(Usable by adjusting
flaring dimension)
Can R407C tools be used?
Ester oil:
Alkylbenzene oil: minimum amount
(Usable if equipped
with adopter for rever se flow)
(Usable by adjusting
flaring dimension)
: Prepare a new tool. (Use the new tool as the tool exclusive for R410A.)
: Tools for other refrigerants can be used under certain conditions.
: Tools for other refrigerants can be used.
New refrigerant R410A is adopted for replacement inverter series. Although the refrigerant piping work for R410Ais same
as for R22, exclusive tools are necessary so as not to mix with different kind of refrigerant. Furthermore as the working
pressure of R410A is 1.6 time higher than that of R22, their sizes of flared sections and flare nuts are different.
1Thickness of pipes
Because the working pressure of R410A is higher compared to R22, be sure to use refrigerant piping with thickness
shown below. (Never use pipes of 0.7mm or below.)
2Dimensions of flare cutting and flare nut
The component molecules in HFC refrigerant are smaller compared to conventional refrigerants. In addition to that,
R410A is a refrigerant, which has higher risk of leakage because of its working pressure higher than that of other refrigerants. Therefore, to enhance airtightness and intensity, flare cutting dimension of copper pipe for R410A have been specified separately from the dimensions for other refrigerants as shown below. The dimension B of flare nut for R410A also
have partly been changed to increase intensity as shown below. Set copper pipe correctly referring to copper pipe flaring
dimensions for R410A below. For 1/2” and 5/8”, the dimension B changes.
Use torque wrench corresponding to each dimension.
Dimension A
3Tools for R410A (The following table shows whether conventional tools can be used or not.)
5
Dimension B
Page 6
2COMBINATION OF INDOOR AND OUTDOOR UNITS
2-1. 1:1 SYSTEM
Outdoor unit
Indoor unit
PEH-RP·MYA
2-2. SYNCHRONIZED TWIN, TRIPLE AND QUADRUPLE SYSTEM
Ratio of distributingPart No.
Synchronized twin50:50MSDD-50WR-E
Synchronized triple33:33:33MSDT-111R-E
Synchronized quadruple25:25:25:25MSDF-1111R-E
6
Page 7
3FEATURES
PUHZ-RP8YHA
PUHZ-RP10YHA
CHARGELESS SYSTEM
PRE-CHARGED REFRIGERANT IS SUPPLIED FOR PIPING LENGTH AT SHIPMENT.
(Max.30m)
The refrigerant circuit with LEV(Linear Expansion Valve) and accumulator always control the optimal refrigerant
level regardless of the length (30m max. and 5m min.) of piping. The additional refrigerant charging work during
installation often causes problems. Heretofore it is completely eliminated. This unique system improves the quality
and reliability of the work done.It also helps to speed up the installation time.
7
Page 8
4SPECIFICATIONS
Service Ref.
Function
Capacity
Total input
Power supply (phase, cycle, voltage)
External finish
Refrigerant control
Compressor
Crankcase heater
Heat exchanger
FanFan(drive) o No.
Defrost method
OUTDOOR UNIT
Noise level
Dimensions
Weight
Refrigerant
Pipe size O.D.
Connection method
Between the indoor &
outdoor unit
REFRIGERANT PIPING
Running current
Model
Motor output
Starter type
Protection devices
Fan motor output
Airflow
Charge
Oil (Model)
/min(CFM
K
Cooling
Heating
W
D
H
Liquid
Gas
Indoor side
Outdoor side
Height difference
Piping length
The cable length may vary depending on the condition of installation, humidity or materials, etc.
Cross section
of cable
Wire size
2
)
(mm
Number
of wires
PolarityL(m) ✽5
Round
2.5
3
Clockwise : S1-S2-S3
Flat
2.5
3
Not applicable
(Because center wire has no cover finish)
applicable
Flat
1.5
4
From left to right : S1-Open-S2-S3
Round
2.5
4
Clockwise : S1-S2-S3-Open
Connect S1 and S3 to the opposite angle
(30)
✽1
Not
✽2
(18)
✽3
30
✽4
✽1 : In case that cable with stripe of yellow and green is available.
✽2 : In the flat cables are connected as this picture, they can be used up to 30m.
(3C Flat cable ✕ 2)
S1 S2 S3
✽3 : In case of regular polarity connection (S1-S2-S3), wire size is 1.5mm2.
✽4 : In case of regular polarity connection (S1-S2-S3).
✽5 : Mentioned cable length is just a reference value.
It may be different depending on the condition of installation, humidity or materials, etc.
Be sure to connect the indoor-outdoor connecting cables directly to the units (no intermediate
connections).
Intermediate connections can lead to communication errors if water enters the cables and causes
insufficient insulation to ground or a poor electrical contact at the intermediate connection point.
(If an intermediate connection is necessary, be sure to take measures to prevent water from entering
the cables.)
13
Page 14
9
Outdoor unit
Power supply
Phase
Frequency & Voltage
Outdoor unit (A)
Wire No.
32
4
32
4
Models (Outdoor unit)
3N~(3ph 4wires)
50Hz, 380-400-415V
Outdoor unit
Power supply
Input capacity
Main switch/Breaker
Indoor unit/Outdoor unit connecting
Wire No. o size (e)
Remote controller-indoor unit connecting
Wire No. o size (e)
Control circuit rating
Wiring
Cable 2C o 0.69
This wire is accessory of remote controller
(Wire length: 10m, Non-polar)
Indoor unit-Outdoor unit: S1-S2 AC220V-230V-240V
S2-S3 DC24V
Remote controller-Indoor unit: DC14V
RP8RP10
Cable length 50 m : 3 o 4 (Polar)
Cable length 80 m : 3 o 6 (Polar)
1
2
S1
S2
S3
S1
S2
S3
Indoor/outdoor
unit connection
cable
Indoor
unit
Unit
power
supply
Outdoor
unit
Remote
controller
L1
L2
L3
N
Grounding
L1
L2
L3
N
1
2
1
2
S1
Indoor
unit
S2
S3
S1
S2
S3
S1
S2
S3
Unit
power
supply
Indoor/outdoor
unit connection
cable
Indoor
unit
Outdoor
unit
Remote
controller
Grounding
1
2
1
2
1
2
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
Indoor/outdoor
connection cable
Indoor
unit
Unit
power
supply
Indoor
unit
Indoor
unit
Outdoor
unit
Remote
controller
L1
L2
L3
N
Grounding
1
2
1
2
S1
S2
S3
S1
S2
S3
S1
S2
S3
1
2
S1
S2
S3
1
2
S1
S2
S3
Indoor/outdoor
connection cable
Indoor
unit
Unit
power
supply
Indoor
unit
Indoor
unit
Outdoor
unit
Remote
controller
L1
L2
L3
N
Grounding
Indoor
unit
SPECIFICATIONS FOR ELECTRICAL WORK
9-1. FIELD ELECTRICAL WIRING (POWER WIRING SPECIFICATIONS)
PUHZ-RP•YHA
Check items
1. Wiring size must comply with the applicable local and national code.
2. Be careful about choosing the installation location for the earth leakage breaker and how it is installed as the initial electric
current may cause it to malfunction.
3. Power supply cords and indoor unit / Outdoor unit connecting cords shall not be lighter than polychloroprene sheathed flex-
ible cord. (design 254 IEC 57)
1:1 systemSynchronized twin, triple and quadruple system
Electrical wiring
• Synchronized twin
• Synchronized triple
• Synchronized quadruple
14
Page 15
9-2. M-NET WIRING METHOD
Group
remote
controller
Refrigerant
address 00
M-NET
address 01
A-control
remote
controller
A-control
remote
controller
A-control
remote
controller
Refrigerant
address 00
M-NET
address 02
Refrigerant
address 00
M-NET
address 03
Power
supply
unit for
transmission
wire
Central
remote
controller
M-NET transmission wire
✕ Bad example (Multi spot grounding of shield wire)
Good example 1 (Single spot grounding of shield wire)
Power
supply
appliance
M-NET type
outdoor unit
Central
remote
controller
Power
supply
appliance
M-NET type
outdoor unit
M-NET type
outdoor unit
M-NET type
outdoor unit
M-NET transmission wire
M-NET type
outdoor unit
M-NET type
outdoor unit
Central
remote
controller
Power
supply
appliance
M-NET type
outdoor unit
M-NET transmission wire
M-NET type
outdoor unit
M-NET type
outdoor unit
Good example 2 (Single spot grounding of shield wire)
(Points to notice)
(1) Outside the unit, transmission wires should stay away from electric wires in order to prevent electromagnetic noise from
making an influence on the signal communication. Place them at intervals of more than 5cm. Do not put them in the same
conduit tube.
(2) Terminal block (TB7) for transmission wires should never be connected to 220~240V power supply. If it is connected,
electronic parts on M-NET p.c. board may be burn out.
(3) Use 2-core x 1.25mm2shield wire (CVVS, CPEVS) for the transmission wire. Transmission signals may not be sent or
received normally if different types of transmission wires are put together in the same multi-conductor cable. Never do this
because this may cause a malfunction.
It would be ok if M-NET wire (non-polar, 2-cores) is arranged in addition to the wiring for A-control.
(4) Ground only one of any appliances through M-NET transmission wire (shield wire). Communication error may occur due to
the influence of electromagnetic noise.
If there are more than two grounding spots on the shield wire, noise may enter into the shield wire because the ground
wire and shield wire form one circuit and the electric potential difference occurs due to the impedance difference among
grounding spots. In case of single spot grounding, noise does not enter into the shield wire because the ground wire and
shield wire do not form one circuit.
To avoid communication errors caused by noise, make sure to observe the single spot grounding method described in the
installation manual.
“Ed” error will appear on the LED display of outdoor unit.
“0403” error will appear on the central-control remote controller.
15
Page 16
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
0
12
~
50
M-NET Address No.
<Setting example>
Switng
setting
SW11
ones
digit
SW12
tens
digit
OFF
ON
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
0
Refrigrant
address
OFF
ON
8
OFF
ON
1
OFF
ON
9
OFF
ON
10
OFF
ON
11
OFF
ON
12
OFF
ON
13
OFF
ON
14
OFF
ON
15
OFF
ON
2
OFF
ON
3
OFF
ON
4
OFF
ON
5
OFF
ON
6
OFF
ON
7
System
controller
A-control
remote
controller
Group AGroup BGroup C
A-control
remote
controller
TB5
A-control
remote
controller
Refrigerant
address 00
M-NET
address 01
Refrigerant
address 00
M-NET
address 02
Refrigerant
address 01
M-NET
address 03
Refrigerant
address 00
M-NET
address 04
Power
supply
unit for
transmission
wire
A-control
remote
controller
A-control
remote
controller
TB5
Group AGroup B
Refrigerant
address 00
M-NET
address 01
Refrigerant
address 01
M-NET
address 02
Refrigerant
address 00
M-NET
address 04
Refrigerant
address 01
M-NET
address 03
Refrigerant
address 02
M-NET
address 05
System
controller
Power
supply
unit for
transmission
wire
● M-NET wiring
(1) Use 2-core x 1.25mm
2
shield wire for electric wires.
(Excluding the case connecting to system controller.)
(2) Connect the wire to the M-NET terminal block.Connect one core of the
transmission wire (non-polar) to Aterminal and the other to B. Peel the
shield wire, twist the shield part to a string and connect it to S terminal.
(3) In the system which several outdoor units are being connected, the terminal
(A, B, S) on M-NET terminal block should be individually wired to the other
M-NET
terminal
block
ABS
Transmission
wire
Ground
wire
Shield
part
outdoor unit’s terminal, i.e. Ato A, B to B and S to S.In this case, choose one of those outdoor units and drive a screw
to fix an ground wire on the plate as shown on the right figure.
9-2-1. M-NET address setting
In A-control models, M-NET address and refrigerant address should be set only for the outdoor unit. Similar to Free Combo
system, there is no need to set the address of outdoor unit and remote controller. To construct a central control system, the
setting of M-NET address should be conducted only upon the outdoor unit. The setting range should be 1 to 50 (the same as
that of the indoor unit in Free Combo system), and the address number should be consecutively set in a same group.
Address number can be set by using rotary switches
(SW11 for ones digit and SW12 for tens digit), which
is located on the M-NET p.c. board of outdoor unit.
(Factory setting: all addresses are set to “0”.)
9-2-2. Refrigerant address setting
In case of multiple grouping system (multiple refrigerant circuits in one group), indoor units should be connected by remote
controller wiring (TB5) and the refrigerant address needs to be set. Leave the refrigerant addresses to “00” if the group setting is not conducted. Set the refrigerant address by using DIP SW1-3 to -6 on the outdoor controller circuit board. [Factory
setting: all switches are OFF. (All refrigerant addresses are “00”.)]
9-2-3. Regulations in address settings
In case of multiple grouping system, M-NET and refrigerant address settings should be done as explained in the above
section. Set the lowest number in the group for the outdoor unit whose refrigerant address is “00” as its M-NET address.
w Refrigerant addresses can be overlapped if they are in the different group.
w In group B, M-NET address of the outdoor unit whose refrigerant address is “00” is not set to the minimum in the group. As
“3” is right for this situation, the setting is wrong. Taking group A as a good sample, set the minimum M-NET address in
the group for the outdoor unit whose refrigerant address is “00”.
16
Page 17
10REFRIGERANT SYSTEM DIAGRAM
Strainer
#50
Strainer
#50
Strainer
#100
Strainer
#100
Strainer
#100
Strainer
#100
Oil
separator
Strainer
#100
Stop valve
(with service port)
Stop valve
(with service port)
Charge plug
(Low pressure)
Accumulator
Oil-back hole
Strainer#40
Linear expansion valve
Low pressure switch 63L
Compressor
Capillary tube1
Capillary tube2
Replace
filter
High pressure switch 63H
Bypass valve
Charge plug
(High pressure)
Thermistor TH4
(Discharge)
Thermistor TH6
(Outdoor 2-phase pipe)
Thermistor TH7
(Outdoor)
Thermistor TH3
(Outdoor pipe)
Thermistor TH32
(Outdoor pipe)
Heat exchanger
4-way valve
Refrigerant GAS pipe
connection
(RP8:1, RP10:1-1/8)
Refrigerant flow in cooling
Refrigerant flow in heating
PUHZ-RP8YHA
PUHZ-RP10YHA
17
Page 18
11CAPACITY CURVES
Cooling capacity
1.4
Indoor intake air wet-bulb temperature <W.B. :>
1.2
1
0.8
Cooling capacity ratio
0.6
-5051015202530354046
1.2
1.0
0.8
22
20
18
0.6
Cooling input ratio
16
0.4
Cooling input
-5051015202530354046
Outdoor intake air dry-bulb temperature <D.B. :>
Heating capacityHeating input
Indoor intake air dry-bulb temperature <D.B. :>
Indoor intake air wet-bulb temperature <W.B. :>
Outdoor intake air dry-bulb temperature <D.B. :>
Indoor intake air dry-bulb temperature <D.B. :>
22
20
18
16
Outdoor intake air wet-bulb temperature <W.B. :>Outdoor intake air wet-bulb temperature <W.B. :>
Note : These diagrams show the case where the operation frequency of a compressor is fixed.
18
Page 19
12APPLICABLE EXTENSION PIPE FOR EACH MODEL
70m
[30m]
SW
SW : When the outdoor unit is located lower than
the indoor unit, set DIP SW8-1 on the outdoor
unit controller board to ON.
RP8
RP10
Liquid
pipe
(mm)
OD
Thick-
ness
OD
Thick-
ness
gas
pipe
(mm)
[
19.05
t1.0
20m
[20m]
20m
[20m]
[
22.2
t1.0
50m
[30m]
50m
[30m]
[
25.4
t1.0
Normal piping
70mw1
[30m]
70m
[30m]
[
28.58
t1.0
SW
70m
[30m]
70m
[30m]
[
19.05
t1.0
20m
[20m]
20m
[20m]
[
22.2
t1.0
50m
[30m]
50m
[30m]
[
25.4
t1.0
70m
[30m]
70m
[30m]
[
28.58
t1.0
SW
70m
[30m]
Normal piping
70mw1
[30m]
[
28.58
t1.0
SW
50m
[20m]
50m
[20m]
[
31.75
t1.0
w
2
SW
50m
[20m]
w
2
50m
[20m]
[
25.4
t1.0
50m
[20m]
50m
[20m]
[
22.2
t1.0
50m
[20m]
50m
[20m]
Note : The maximum pipe length is 80m in case of new piping.
w1 Be sure to use hard (tempered) one for pipe over [22.2.(Do not use soft (annealed) one.)
w2 When using [31.75 pipe, the outdoor temperature range (dry-bulb temperature) for heating operation is -11 to +21:.
<Table 1> Maximum pipe length (RP8·RP10)
<
Marks in the table above
>
[
9.52
t0.8
[
12.7
t0.8
[
15.88
t1.0
The maximum pipe length
Charge-less pipe length
: It can be used.
: Cooling capacity is lowered.➝ Refer to <Table6>
: Additional refrigerant charge is required when
the pipe length exceeds 20m.➝ Refer to <Table7>
Amount of additional refrigerant charge (kg)
30 m and less 31-40 m and less 41-50 m and less 51-60 m and less 61-70 m and less 71-80 m and less
0.9 kg1.8 kg2.7 kg3.6 kg
1.2 kg2.4 kg3.6 kg4.8 kg
Outdoor unit
permitted
pipe length
RP8
RP10
80m or less
At time of shipping
(kg)
10.5
10.5
No additional
charge necessary
The additional charge
amount is obtained by
the following formula.
Main piping:
Liquid line size
[9.52 overall length [m]
Main piping:
Liquid line size
[12.7 over all length [m]o 0.12 [kg/m]
–=
Additional charge amount
for 70 m
RP8 3.6 kg
RP10 4.8 kg
+
+
+
Calculate the additional charge amount based on the following procedure.
If the calculation results in an amount that is smaller than the "Additional charge amount for 70m," perform the additional charge using the amount shown
in "Additional charge amount for 70m."
12-1. 1:1 SYSTEM
(1) Pipe length
(2) Adjusting the amount of refrigerant
Check additional refrigerant charging amount referring to table 7 when the liquid pipe diameter is larger than
the standard size, and table 2 when the pipe of the standard diameter is used.
<Table 2>
19
Page 20
(3) Capacity correction
70
75
80
85
90
95
100
5 10152025303540455055606570758085
Corrected pipe length (m)
Capacity ratio [%]
RP8·10
Heating RP8·10
70
75
80
85
90
95
100
510152025303540455055
Corrected pipe length [m]
Capacity ratio [%]
Heating RP8([22.2), RP10([25.4)
Cooling RP8([22.2)
Cooling RP10([25.4)
70
75
80
85
90
95
100
510152025
Corrected pipe length [m]
Cpacity ratio [%]
Cooling RP10([22.2)
Cooling RP8([19.05)
Heating RP8([19.05), RP10([22.2)
Cooling and heating capacity is lowered according to the piping length. Capacity can be obtained by referring
to the following capacity curves.
When the diameter of the gas pipe is smaller than the standard size, cooling capacity is lowered comparing to
the operation using the standard diameter pipe.
The lowered capacity can be obtained by referring to the capacity curves for gas pipe which is one or two size
smaller than standard size.
Corrected pipe length (m) = actual pipe length (m) + number of bends o 0.3 (m)
1. Capacity curves 1 <Standard size>
2. Capacity curves 2 <When the gas pipe's diameter is one-size-smaller than the standard
3. Capacity curves 3 <When the gas pipe's diameter is two-size-smaller than the standard
20
Page 21
12-2. SYNCHRONIZED TWIN, TRIPLE AND QUADRUPLE SYSTEM
(1) Synchronized twin
Maximum pipe length (Main pipe[A]+Branch pipe diameter [ B and C ])
Main pipe
(mm)[A]
Branch
pipe
[mm]
[B, C]
w1 The maximum pipe length is 80m in case of new pipping.
w2 When using [31.75 pipe, the outdoor temperature range (dry-bulb temperature) for heating operation is -11 to +21:.
Liquid pipe
Gas pipe
Liquid pipe
Gas pipe
Liquid pipe
Gas pipe
Liquid pipe
Gas pipe
Liquid pipe
Gas pipe
[6.35
[12.7
[9.52
[15.88
[9.52
[19.05
[12.7
[19.05
(2) Synchronized triple
Maximum pipe length (Main pipe [A] + Branch pipe [ B, C and D ])
Main pipe
(mm)[A]
Branch
pipe
[mm]
[B, C, D]
w1 The maximum pipe length is 80m in case of new pipping.
w2 When using [31.75 pipe, the outdoor temperature range (dry-bulb temperature) for heating operation is -11 to +21:.
Maximum pipe length (Main pipe[A]+Branch pipe [ B, C, D and E ])
Main pipe
(mm)[A]
Branch
pipe
[mm]
[B, C, D, E]
w1 The maximum pipe length is 80m in case of new pipping.
w2 When using [31.75 pipe, the outdoor temperature range (dry-bulb temperature) for heating operation is -11 to +21:.
: It can be used.
: Cooling capacity is lowered.➝ Refer to <Table6>
: Additional refrigerant charge is required when
the pipe length exceeds 20m.➝ Refer to <Table7>
The maximum pipe length
Charge-less pipe length
[9.52
Normal
sw
piping
70mw1
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
sw
sw
50m
[30m]
50m
[30m]
50m
[30m]
the indoor unit, set DIP SW8-1 on the outdoor
unit controller board to ON.
[12.7[15.88[9.52[12.7[15.88
20m
[20m]
20m
[20m]
20m
[20m]
50m
[30m]
50m
[30m]
50m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
sw
sw
sw
50m
50m
[20m]
[20m]
sw
50m
50m
[20m]
[20m]
sw
50m
50m
[20m]
[20m]
50m
[20m]
50m
[20m]
50m
[20m]
w2
50m
[20m]
sw
w2
sw
20m
50m
[20m]
[20m]
sw
w2
sw
50m
20m
[20m]
[20m]
20m
[20m]
50m
[30m]
50m
[30m]
50m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
RP10 quadruple (RP2.5✕4)RP8 quadruple (RP2✕4)
20m
[20m]
20m
[20m]
20m
[20m]
50m
[30m]
50m
[30m]
50m
[30m]
70m
[30m]
70m
[30m]
70m
[30m]
Normal
piping
70mw1
[30m]
70m
[30m]
70m
[30m]
50m
[20m]
50m
[20m]
50m
[20m]
50m
[20m]
50m
[20m]
50m
[20m]
50m
[20m]
50m
[20m]
50m
[20m]
w2
50m
[20m]
w2
50m
[20m]
w2
50m
[20m]
21
Page 22
Pipe diameter and thickness
OD
[6.35
(mm)
Thickness
(mm)
Be sure to use hard (tempered) one for pipe over [22.2.(Do not use soft (annealed) one.)
[9.52 [12.7[
0.8
0.80.81.01.01.01.01.0
15.88[19.05
[22.2 [25.4[
28.58
[
31.75
1.1
1
1
44
BC
2
4
D
1
4
E
1
1 Indoor unit
2
Outdoor unit
3
Main piping
4
Branch piping
5
Multi disttibution
pipe (option)
1
5
3
2
A
<Table 6> Lowered cooling capacity by the smaller gas pipe diameter
Pipe length
5m and less
6~10m
11~20m
21~30m
31~40m
41~50m
gas pipe [22.2gas pipe [19.05
100%
100~96%
96~91%
91~86%
86~83%
83~80%
100%
100~91%
91~81%
Height difference (Indoor unit-
1
Outdoor unit) Max. 40 m
Height difference (Indoor unit-
2
Indoor unit) Max. 1 m
Distance between indoor and indoor units
3
pipe length.
B—C B—D B—E
C—D C—E D—E
Number of pipe bends
4
Within 15
points8 points between main pipe A and
each branch pipe (B, C, D, E).
RP10 Cooling capacity ratioRP8 Cooling capacity ratio
gas pipe [25.4gas pipe [22.2
100%
100~98%
98~94%
94~91%
91~88%
88~86%
100%
100~95%
95~88%
<Table 7> Additional refrigerant amount when the liquid pipe of the larger diameter is used.
30 m and less 31-40 m and less 41-50 m and less 51-60 m and less 61-70 m and less 71-80 m and less
No additional
charge necessary
0.9 kg1.8 kg2.7 kg3.6 kg
1.2 kg2.4 kg3.6 kg4.8 kg
Amount of additional refrigerant charge (kg)
A+B+C+D
The additional charge
amount is obtained by
the following formula.
When length exceeds 70 m
When the total length of the piping exceeds 70 m, calculate the amount of additional charge based on the following requirements.
Note: If the calculation produces a negative number (i.e. a “minus” charge), of if calculation results in an amount that is less than the
“Additional charge amount for 70 m,”perform the additional charge using the amount shown in “Additional charge amount for 70 m.”
Amount of additional
charge
Additional charge amount
for 70 m
Main piping:
Liquid line size
[12.7 overall length
0.12
RP83.6 kg
RP10 4.8 kg
Main piping:
Liquid line size
+++
[9.52 overall length
0.09 (Gas line:[28.58)
Branch piping: Liquid
line size
[9.52 overall length
0.06 (Gas line: [15.88)
Branch piping: Liquid
line size
[6.35 overall length
0.02 (Gas line: [15.88)
–=
3.6 (kg)
1. Perform refrigerant piping connections for the indoor / outdoor unit while the outdoor unit's stopvalve is completely
closed (factory setting), and then vacuumize the refrigerant lines through the service port of the outdoor unit.
2. Open the stop valves of the outdoor unit completely.
This will completely connects the refrigerant lines of the indoor and outdoor units.
Handling of the stop valve is shown on the outdoor unit.
Note :
· Apply refrigerating machine oil over the flare seat surface. Do not apply to the threaded portion.
(It will cause the flare nut to loosen.)
· Use two wrenches to tighten piping connection.
· Use leak detector or soapy water to check for gas leaks after connections are completed.
· For the insulation of the connection at the indoor side, make sure to use the attached insulation materials and
thoroughly follow the instruction shown in the manual.
· Always use a non-oxidizing brazing material when brazing the pipes.
Adjusting the amount of refrigerant
Check additional refrigerant charging amount referring to the procedure 2 below when the liquid pipe diameter of the main
piping Ais larger than the standard size.
1 When the standard diameter pipe is used for the main piping A, calculate the additional refrigerant amount by
referring to <Table 2> as well as the 1:1 system.
2 When the liquid pipe diameter of the main piping A is one size larger than the standard size:
· When the extension pipe length (main piping + branch piping) does not exceeds 20m, adjustment of the
refrigerant is not necessary (charge-less).
· When the extension pipe length (main piping + branch piping) exceeds 20m, charge the amount of refrigerant
that is obtained by the formula shown in <Table 7>.
If the calculation produces a negative number (i.e. a "minus" charge), additional charging is not necessary.
Note: Apply 0 to L1 to L3 corresponding to the piping that are not used.
Correcting the capacity value
When calculating the lowered capacity by the extension pipe length, use the longest length between the indoor and the outdoor
units.
23
Page 24
Refrigerant collecting (pump down)
OFF
12
ON
<SW4>
AB
CD
A Stop C operation
B Cooling D Heating
Perform the following procedures to collect the refrigerant when moving the indoor
unit or the outdoor unit.
1 Before collecting the refrigerant, first make sure that the all of the SW5 DIP switches
for function changes on the control board of the outdoor unit are set to OFF. If all of the
SW5 switches are not set to OFF, record the settings and then set all of the switches
to OFF. Start collecting the refrigerant. After moving the unit to a new location and
completing the test run, set the SW5 switches to the previously recorded settings.
2
Supply power (circuit breaker).
* When power is supplied, make sure that “CENTRALLY CONTROLLED” is not
displayed on the remote controller. If “CENTRALLY CONTROLLED” is displayed, the refrigerant collecting (pump down) cannot be completed normally.
3
After the liquid stop valve is closed, set the SWP switch on the control board of the
outdoor unit to ON. The compressor (outdoor unit) and ventilators (indoor and
outdoor units) start operating and refrigerant collecting operation begins. LED1
and LED2 on the control board of the outdoor unit are lit.
* Set the SWP switch (push-button type) to ON in order to perform refrigerant
collecting operation only when the unit is stopped.
However, refrigerant collecting operation cannot be performed until compressor stops even if the unit is stopped.
Wait three minutes until compressor is completely stopped and set the SWP
switch to ON again.
4 As the unit automatically stops after two or three minutes of refrigerant
collecting operation (LED1 if not lit and LED2 is lit), be sure to quickly
close the gas stop valve.
If the unit stops while both LED1 and LED2 are lit, open the liquid valve
completely, wait three minutes, then repeat the step 3.
* If the refrigerant collecting operation has been completed normally
(LED1 and LED2 are lit), the unit will remain stopped until the power
supply is turned off.
5 Turn off the power supply (circuit breaker).
* Note that when the length of the extension piping is long, it may not be
possible to perform a pump-down operation.When performing the pumpdown operation, make sure that the low pressure is lowered to near
0 MPa (gauge).
Unit replacement operation
· This model will automatically begin the replacement operation after it has been
installed when it enters the initialization phase for normal heating or cooling. Ho wever , the unit will not automatically perf orm the replacement operation if it is moved
to a new location where it will be used with existing R22 refrigerant piping. Under
such conditions, always use the SW8-2 operations to perform the replacement
operation before beginning the test operation.
Some models can perform the replacement operation only by SW8-2 operation.
Refer to the outdoor unit's Installation Manual for detail.
Replacement operation procedures (When moving the unit and connecting it
to existing R22 piping.)
1 Supply power.
2
Set DIP switch SW8-2 on the control board of the outdoor unit to ON to start
replacement operation.
* The replacement operation is performed using the cooling system. Cool air will
flow from the indoor unit during the replacement operation.
* During the replacement operation,
and LED1 and LED2 on the control board of the outdoor unit flash together.
The duration of the replacement operation is determined by the length of the pip-
3
ing. Alwa ys perform the replacement operation f or longer than the stipulated time.
* Always perform one of the following operations at the completion of the re-
placement operation. The replacement operation will end and the unit will automatically stop.
TEST RUN
is displayed on the remote controller
(1)Set SW8-2 from ON to OFF. (When ending a replacement operation of less
than 2 hours.)
· Each time SW8-2 is set from OFF to ON, the replacement operation can be
started. Always perf orm the replacement operation for longer than the stipulated time.
Required replacement operation times
Piping Length
0 to 20 meters30 minutes or more
21 to 30 meters45 minutes or more
31 to 70 meters60 minutes or more
(2)The replacement operation will automatically stop after 2 hours. (It will end with
SW8-2 still in the ON position.)
· When the replacement operation has ended automatically after 2 hours of
operation, there is no need to set SW8-2 from ON to OFF; normal air conditioning operations can bestarted with the SW8-2 being set to ON.However, to repeat the replacement operation, SW8-2 will have to be returned
to OFF and then set to ON.
* If the indoor temperature is below 15:, the compressor will operate
intermittently but the unit is not faulty.
Replacement
Operation Time
Start and finish of test run
• Operation from the indoor unit
Execute the test run using the installation manual for the indoor unit.
• Operation from the outdoor unit
By using the DIP switch SW4 on the control board of the outdoor unit, test run can be started and finished, and its operation
mode (cooling/heating) can be set up.
1Set the operation mode (cooling/heating) using SW4-2.
2Turn on SW4-1 to start test run with the operation mode set by SW4-2.
3Turn off SW4-1 to finish the test run.
• There may be a faint knocking sound around the machine room after power is supplied, but this is
no problem with product because the linear expansion pipe is just moving to adjust opening pulse.
• There may be a knocking sound around the machine room for several seconds after compressor
starts operating, but this is no problem with product because the check valve, itself, generates the
sound because pressure difference is small in the refrigerant circuit.
Note:
The operation mode cannot be changed by SW4-2 during test run. (To change test run mode, stop the unit by SW4-1,
change the operation mode and restart the test run by SW4-1.)
24
Page 25
13TROUBLESHOOTING
Unit conditions at service
Error code
Actions to be taken for service (summary)
The inferior phenomenon is
reoccurring.
Displayed
Not displayed
Judge what is wrong and take a corrective action according
to “13-4. SELF-DIAGNOSIS ACTION TABLE”.
Conduct trouble shooting and ascertain the cause of the
inferior phenomenon according to “13-5. TROUBLESHOOTING BY INFERIOR PHENOMENA”.
The inferior phenomenon is
not reoccurring.
Logged
Not logged
1Consider the temporary defects such as the work of
protection devices in the refrigerant circuit including
compressor, poor connection of wiring, noise and etc.
Re-check the symptom, and check the installation
environment, refrigerant amount, weather when the
inferior phenomenon occurred, matters related to wiring
and etc.
2Reset error code logs and restart the unit after finishing
service.
3There is no abnormality concerning of parts such as
electrical component, controller board, remote controller
and etc.
1Re-check the abnormal symptom.
2Conduct trouble shooting and ascertain the cause of the
inferior phenomenon according to “13-5.
TROUBLE SHOOTING BY INFERIOR PHENOMENA”.
3Continue to operate unit for the time being if the cause
is not ascertained.
4There is no abnormality concerning of parts such as
electrical component, controller circuit board,
remote controller and etc.
13-1. TROUBLESHOOTING
<Error code display by self-diagnosis and actions to be taken for service (summary)>
Present and past error codes are logged and displayed on the wired remote controller and control board of outdoor unit.
Actions to be taken for service, which depends on whether or not the inferior phenomenon is reoccurring at service, are summarized in the table below. Check the contents below before investigating details.
25
Page 26
13-2. CHECK POINT UNDER TEST RUN
PAR-20MAA
ON/OFF
CENTRALLY CONTROLLED
ERROR CODE
CLOCK
ON OFF
˚C
CHECK
CHECK MODE
FILTER
TEST RUN
FUNCTION
˚C
1Hr.
NOT AVAILABLE
STAND BY
DEFROST
FILTER
CHECK TEST
TEMP.
TIMER SET
TEST RUN button
TEST RUN display
LIQUID PIPE TEMPERATURE display
(MA remote controller)
(1) Before test run
• After installation of indoor and outdoor units, piping work and electric wiring work, re-check that there is no refrigerant leak-
age, loosened connections and incorrect polarity.
• Measure impedance between the ground and the power supply terminal block(L, N) on the outdoor unit by 500V Merger and
check that it is 1.0M" or over.
wDon’t use 500V Merger to indoor/outdoor connecting wire terminal block(S1, S2, S3) and remote controller terminal block
(1, 2). This may cause malfunction.
• Make sure that test run switch (SW4) is set to OFF before turning on power supply.
• Make sure that all of the SW5 switches for function changes on the control board of the outdoor unit are set to OFF. If all of
the SW5 switches are not set to OFF, record the settings and then set all of the switches to OFF. And perform emergency
operation. After finishing emergency operation, set the SW5 switches to the recorded settings.
• Turn on power supply twelve hours before test run in order to protect compressor.
• For specific models which requires higher ceiling settings or auto-recovery feature from power failure, make proper changes
of settings referring to the description of “Selection of Functions through Remote Controller”.
Make sure to read operation manual before test run. (Especially items to secure safety.)
13-2-1. Test run by remote controller
A
B
Operating procedures
1. Turn on the main power supply.
2. Press TEST button twice.
3. Press OPERATION SWITCH
button.
4. Press AIR DIRECTION
5. Check the outdoor unit fan for
correct running.
6. Press the ON/OFF button to reset the test run in progress.
7. Turn off the main power supply.
B button.
While the room temperature display on the remote
controller is “H0”, the remote controller is disabled.
Wait until “H0” disappears before using remote controller.
“H0” appears for about 2 minutes after power supply is
turned on. w1
The TEST appears on the screen.
Cooling mode:
A
Heating mode: Check if warm air blows. (It takes a little
while until warm air blows.)
Check for correct motion of auto-vanes.
The outdoor unit features automatic capacity control to
provide optimum fan speeds. Therefore, the fan keeps
running at a low speed to meet the current outside air
condition unless it exceeds its available maximum power.
Then, in actuality, the fan may stop or run in the reverse
direction depending on the outside air, but this does not
mean malfunction.
Check if cool air blows and water is drained.
• In case of test run, the OFF timer will be activated, and the test run will automatically stop after two hours.
• The room temperature display section shows the pipe temperature of indoor units during the test run.
• Check that all the indoor units are running properly in case of simultaneous twin and triple operation. Malfunctions may not
be displayed regardless of incorrect wiring.
w1 After turning on the power supply, the system will go into startup mode, “H0” will blink on the display section of the room
temperature, and lamp(red) of the remote controller will flash.
As to INDOOR BOARD LED, LED1 and LED2 will be lit up in case the address is 0, or turned off in case the address is not
0. LED3 will blink.
As to OUTDOOR BOARD LED, LED1(green) and LED2(red) will light up. (After the startup mode of the system finishes,
LED2(red) will be turned off.)
In case OUTDOOR BOARD LED is digital display, — and —will be displayed alternately every second.
• If one of the above operations doesn’t function correctly, the causes written below should be considered. Find causes from
the symptoms.
The below symptoms are under test run mode. “startup” in the table means the display status of w1 written above.
Symptoms in test run mode
Remote Controller Display
Remote controller displays “H0”, and
cannot be operated.
After power is turned on, “H0” is displayed
for 3 minutes, then error code is
displayed.
No display appears even when remote
controller operation switch is turned on.
(Operation lamp does not light up.)
Display appears but soon disappears
even when remote controller is operated.
OUTDOOR BOARD LED Display
< > indicates digital display.
After “startup” is displayed, only
green lights up. <00>
After “startup” is displayed,
green(once) and red(once) blink
alternately. <F1>
After “startup” is displayed,
green(once) and red(twice) blink
alternately. <F3, F4, F9>
After “startup” is displayed,
green(twice) and red(once) blink
alternately. <EA. Eb>
After “startup” is displayed, only
green lights up. <00>
After “startup” is displayed, only
green lights up. <00>
• After power is turned on, “H0” is displayed for 2 minutes during
system startup. (Normal)
• Incorrect connection of outdoor terminal block (L, N and S1,
S2, S3.)
• Outdoor unit’s safeguard installation connector is open.
• Incorrect wiring between the indoor and outdoor unit (Polarity
is wrong for S1, S2, S3.)
• Remote controller transmission wire short.
• There is no outdoor unit of address 0.
(Address is other than 0.)
• Remote controller transmission wire burnout.
• After canceling function selection, operation is not possible for
about 30 seconds. (Normal)
Cause
26
Page 27
wPress the remote controller’s CHECK button twice to perform self-diagnosis. See the table below for the
LCD
Contents of inferior phenomena
P1
P2
P4
P5
P6
P8
P9
Abnormality of room temperature thermistor
Abnormality of pipe temperature thermistor/Liquid
Abnormality of drain sensor
Drain overflow protection is working.
Freezing/overheating protection is working.
Abnormality of pipe temperature
Abnormality of pipe temperature thermistor/Cond./Eva
LCD
Contents of inferior phenomena
U1~UP
F3~F9
E0~E5
E6~EF
----
FFFF
Malfunction outdoor unit
Malfunction
outdoor unit
Remote controller transmitting error
Indoor/outdoor unit communication error
No error history
No applied unit
LED1
(microcomputer power supply)
LED2
(remote controller)
LED3
(indoor/outdoor communication)
Lits when power is supplied.
Remote controller
The indoor unit should be connected to the outdoor unit with address “0” setting.
Flash when indoor and outdoor unit are communicating.
ON
SW4
12
A Stop
B Cooling
C Operation
D Heating
A
CD
B
(Factory setting)
contents of LCD display.
See the table below for details of the LED display (LED 1, 2, 3) on the indoor controller circuit board.
13-2-2. Test run by outdoor unit SW4
The setting of test run (ON/OFF) and its operation mode (cooling/heating) can be set by SW4 on the controller circuit board of
outdoor unit. Check that SW5-1 is set to OFF before performing test run. If SW5-1 is set to ON, turn it OFF and then perform
test run. After finishing test run, set SW5-1 back to ON.
1Set operation mode(cooling or heating) by SW4-2.
2Start test run by setting SW4-1 to ON ( ) with the indicated operation mode of SW4-2.
3Finish test run by setting SW4-1 to OFF ( ).
• Operation mode cannot be changed by SW4-2 during test run.
Stop test run to change operation mode by SW4-1, and restart test run by SW4-1 after
the mode is changed.
• Test run automatically stops 2 hours later by 2-hour OFF timer function.
• Test run can be performed by the remote controller.
• The remote controller display of test run by outdoor unit is the same as that of test run by
remote controller.
27
Page 28
13-3. MALFUNCTION-DIAGNOSIS METHOD BY REMOTE CONTROLLER
Mode number
Setting number
Refrigerant address
Unit number
PAR-20MAA
ON/OFF
CENTRALLY CONTROLLED
ERROR CODE
CLOCK
ON OFF
˚C
CHECK
CHECK MODE
FILTER
TEST RUN
FUNCTION
˚C
1Hr.
NOT AVAILABLE
STAND BY
DEFROST
FILTER
CHECK TEST
TEMP.
TIMER SET
E
G
CDH
F
I
A
B
J
1
2
a)
3(1)
c)
b)
d)
e)
13-3-1. Error history of unit
(1) Wired remote controller
<In case of trouble during operation>
If there is a trouble on air conditioner, both indoor unit and outdoor unit will stop and digital display shows what was wrong.
1 “CHECK” and refrigerant address are displayed at set tem-
perature display. Error code and unit number are displayed
at clock display alternately.
(If outdoor unit is malfunctioning, unit number is 00.)
2 The refrigerant address and error code initially sent from the
unit are displayed in case of group control system which
one remote controller controls plural refrigerant systems.
3 Press the “ON/OFF” button to cancel error code.
In case of central control by the controller of MELANS, cancel the error code by the controller of the MELANS, and in
case of distant-handy combined operation, cancel the error
code by cancelling distant operation.
<Malfunction-diagnosis method at maintenance service>
Digital control has memory function that memorizes latest error
code even if it is cancelled by remote controller or power is
shut off, so error histories can be searched by following the
procedure below.
Search error histories of each unit by remote controller.
1 Turn to self-diagnosis mode.
Press the H “CHECK” button twice within three seconds,
and following display appears.
a) Refrigerant address for self-diagnosis
2 Set refrigerant address number that you want to diagnose.
Press the F(temp.) button to set refrigerant address
to be diagnosed.
Refrigerant address has number from 00 to 15.
Three seconds after setting, lighted self-diagnosed refrigerant address begins blinking and self-diagnosis process
begins.
3 Self-diagnosis result display
(1) When there is an error history.
(Refer to 13-4. for details of error code contents.)
b) Alternating display
c) Error code
d) Attribute of error search
e) Unit number
(2) When there is no error history.
(3) When the address does not exist.
28
Page 29
4 To cancel self-diagnosis
(2)
(3)
5 (1)
b)
(2)
(3)
There are following two methods to cancel self-diagnosis:
Press the H “CHECK” button twice within three seconds.
➜Self-diagnosis is cancelled and the display screen will
return to the status before self-diagnosis.
Press the I “ON/OFF” button.
➜Self-diagnosis is cancelled and indoor unit will stop.
This operation is ineffectual when the operation of remote
controller is prohibited.
During self-diagnosis at maintenance service, all the indoor
units start performing fan operation except for the indoor
unit indicating the latest error. Then outdoor units of the
same refrigerant system also start performing fan operation
intermittently for 3 minutes. (The fan is on for 3 seconds
and then off for 5 seconds.)
The unit with error can be inspected by using this. In case
unit other than indoor unit, such as outdoor unit and controller of MELANS, has an error, all the indoor units of the
same refrigerant system stop fan operation and outdoor
units operate intermittently for 3 minutes.
5 To delete error code
When something is wrong with air conditioner, error code
(P1 etc.) is memorized, but error code can be deleted after
termination of service.
<To delete error cord with remote controller>
(1)Display the error cord at the self-diagnosis result display
screen.
b) Alternating display
(2)The address for self-diagnosis will blink when the D
w button is pressed twice within three seconds.
(3) The display (3) shown on the left will be appeared when
the error cord has been reset. Note that the error content
will be redisplayed if error cord resetting is unsuccessful.
<To delete error cord with switch of outdoor unit>
Refer to “13-10. FUNCTION OF SWITCHES, CONNEC-
TORS AND JUMPERS”.
29
Page 30
ON/OFF
TEMP
FAN
VANE
MODE
CHECK
LOUVER
TEST RUN
AUTO STOP
AUTO START
h
min
RESET
SET
CLOCK
CHECK
CHECK
display
Temperature
button
CHECK
button
Refrigerant
address
display
HOUR
button
ON/OFF
button
Inspected unit
Error code
P1
P2
P4
P5
P6
P8
P9
E4, E5
Beep output
beep O 1 time
beep O 2 times
beep O 4 times
beep O 5 times
beep O 6 times
beep O 8 times
beep O 2 times
Other than above
Operation LED
1 sec. O 1 time
1 sec.O 2 times
1 sec.O 4 times
1 sec.O 5 times
1 sec.O 6 times
1 sec.O 8 times
1 sec.O 2 times
Other than above
Indoor unit
Inspected unit
Check code
F1–F9
U0–UP
E6–EE
No check code
(normal)
Beep output
beep beep O 1 time
Other than above
No output
beep beep beep
Operation LED
(0.4sec+0.4sec)
O 1 time
Other than above
Lights off
Lights off
Outdoor
unit
No check code
(mistake of matching with refrigerant
address)
(2) Digital wireless remote controller
<In case of trouble during operation>
When a malfunction occurs to air conditioner, both indoor unit and outdoor unit will stop and operation lamp blinks to inform
unusual stop.
<Malfunction-diagnosis method at maintenance service>
[Procedure]
1. Press the CHECK button twice.
• "CHECK" lights, and refrigerant
address "00" flashes.
• Check that the remote controller's
display has stopped before continuing.
2. Press the temperature
buttons.
• Select the refrigerant address of the
indoor unit for the self-diagnosis.
Note: Set refrigerant address using the
outdoor unit’s DIP switch (SW1).
(For more information, see the
outdoor unit installation manual.)
3. Point the remote controller at the
sensor on the indoor unit and
press the HOUR button.
• If an air conditioner error occurs, the
indoor unit's sensor emits an intermittent buzzer sound, the operation light
flashes, and the error code is
output.
(It takes 3 seconds at most for error
code to appear.)
4. Point the remote controller at the
• The check mode is cancelled.
sensor on the indoor unit and
press the ON/OFF button.
✽ Malfunction diagnosis can be performed only for refrigerant system control-
ling wireless units.
30
Page 31
13-3-2. Wired Remote controller Diagnosis
1
a)
2
3(1)
(2)
(3)
(4)
b)
If operation can not be carried out from remote controller, try
remote controller diagnosis with following process.
1 First, check the electricity current marker.
When correct voltage (DC12V) is not supplied to remote
controller, the electricity current marker is put out.
If the electricity current marker is not lighted, check the
remote controller wiring and the indoor units.
a) Electric current marker
2 Transfer to remote controller diagnosis mode
Hold down the H “CHECK” button for five seconds or more,
and following display appears.
Press the A “FILTER” button, and remote controller diagnosis will begin.
3 Remote controller diagnosis result
(1) When the remote controller is functioning correctly
Check other possible causes, as there is no problem
with remote controller.
Consider the unit is normal when remote controller transmits the result of diagnosis to indoor or outdoor unit and
receives the same data back.
(2) When remote controller has malfunction
The remote controller must be replaced.
If the transmitting-receiving circuit is defective, [‘NG’]
blinks.
"NG" will be displayed when remote controller transmits
the result of diagnosis to indoor or outdoor unit, and
receives no response.
When there might be other problems than diagnosed remote
controller,
(3) There might be noise on transmission path or damage of
other remote controllers or indoor units. Check the trans-
mission path and other controllers.
If the transmission is not possible, [E3] blinks.
"E3" will be displayed when remote controller transmits
the result of diagnosis to indoor or outdoor unit and
receives different data back.
(4) The number of data errors means the difference
between the number of bits sent from remote controller
and the actual number of bits sent to transmission path.
If the data error is displayed, noise and etc. are interfer-
ing with the transmission data. Check the transmission
path.
If the data error has occurred, [ERC] and number of data
errors are displayed.
b) Number of generated data errors (maximum 66 errors)
When the number of data errors is 02.
Transmission data from remote controller
Transmission data on transmission path
4 Cancel the remote controller diagnosis
Hold down the H “CHECK” button for five seconds or more
to cancel remote controller diagnosis, then [H0] operation
lamp will blink and the display screen will return to the status before remote controller diagnosis in about 30 seconds.
31
Page 32
13-4. SELF-DIAGNOSIS ACTION TABLE
<Abnormalities detected when the power is put on>
Error Code
Meaning of error code and detection method
1 No voltage is supplied to terminal
block(TB1) of outdoor unit.
a) Power supply breaker is put
b) Contact failure or discon-
c) Open phase (L2 or N phase)
2 Electric power is not supplied to
outdoor controller circuit board.
a) Disconnection of connector
(Note 1) Refer to indoor unit section for code P and code E.
Case
off.
nection of power supply
terminal.
(CNDC)
1 Check following items.
a) Power supply breaker
b) Connection of power supply terminal block.
c) Connection of power supply terminal block.
2 Check connection of the connector (CNDC)
on the outdoor controller circuit board.
Check connection of the connector, (CNDC)
the outdoor noise filter circuit board.
Refer to 13-9.
Judgment and action
(TB1)
(TB1)
None
F3
(5202)
F5
(5201)
F9
(4119)
—
63L connector open
Abnormal if 63L connector circuit is open
for three minutes continuously after power
supply.
63L: Low-pressure switch
63H connector open
Abnormal if 63H connector circuit is open
for three minutes continuously after power
supply.
63H: High-pressure switch
2 connector open
Abnormal if both 63H and 63L connector
circuits are open for three minutes continuously after power supply.
filter circuit board or parts failure
in outdoor noise filter circuit
board.
4 Defective outdoor controller
circuit board.
1 Disconnection or contact failure
of 63L connector on outdoor
controller circuit board.
2 Disconnection or contact failure
of 63L.
3 63L is working due to refriger-
ant leakage or defective parts.
4 Defective outdoor controller
circuit board.
1 Disconnection or contact failure
of 63H connector on outdoor
controller circuit board.
2 Disconnection or contact failure
of 63H.
3 63H is working due to defective
parts.
4 Defective outdoor controller
circuit board.
1 Disconnection or contact failure
of connector (63H,63L) on
outdoor controller circuit board.
2 Disconnection or contact failure
of 63H, 63L.
3 63H and 63L are working due
to defective parts.
4 Defective outdoor controller
circuit board.
3 a) Check connection of outdoor noise filter
circuit board.
b) Replace outdoor noise filter circuit board.
Refer to 13-9.
4 Replace controller board (When items above
are checked but the units can not be repaired.)
1 Check connection of 63L connector on
outdoor controller circuit board.
Refer to 13-9.
2 Check the 63L side of connecting wire.
3 Check refrigerant pressure.
Charge additional refrigerant.
Check continuity by tester.
Replace the parts if the parts are defective.
4 Replace outdoor controller circuit board.
1 Check connection of 63H connector on
outdoor controller circuit board.
Refer to 13-9.
2 Check the 63H side of connecting wire.
3 Check continuity by tester.
Replace the parts if the parts are defective.
4 Replace outdoor controller circuit board.
1 Check connection of connector(63H,63L) on
outdoor controller circuit board.
Refer to 13-9.
2 Check the 63H and 63L side of connecting
wire.
3 Check continuity by tester.
Replace the parts if the parts are defective.
4 Replace outdoor controller circuit board.
32
Page 33
Error Code
EA
(6844)
Eb
(6845)
EC
(6846)
Meaning of error code and detection method
Indoor/outdoor unit connector
mis-wiring, excessive number of units
(4 units or more)
1. Outdoor controller circuit board can
automatically check the number of
connected indoor units. Abnormal if the
number cannot be checked automatically
due to mis-wiring of indoor/outdoor unit
connecting wire and etc. after power is
turned on for 4 minutes.
2. Abnormal if outdoor controller circuit
board recognizes the number of
connected indoor units as “5 units or
more”.
Mis-wiring of indoor/outdoor unit
connecting wire (converse wiring or
disconnection)
Outdoor controller circuit board can
automatically set the unit number of indoor
units.
Abnormal if the indoor unit number can
not be set within four minutes after power
on because of mis-wiring (converse wiring
or disconnection) of indoor/outdoor unit
connecting wire.
Start-up time over
The unit can not finish start-up process
within four minutes after power on.
1 Contact failure or mis-wiring of
2 Diameter or length of
3 5 or more indoor units are
4 Defective transmitting receiving
5 Defective transmitting receiving
6 Defective indoor power circuit
7 Two or more outdoor units
8 Noise has entered into power
1 Contact failure or mis-wiring of
2 Diameter or length of
4 Defective transmitting receiving
5 Defective transmitting receiving
6 Defective indoor power circuit
7 Two or more outdoor units
8 Noise has entered into power
1 Contact failure of indoor/
2 Diameter or length of indoor/
7 Two or more outdoor units
8 Noise has entered into power
Case
indoor/outdoor unit connecting
wire.
indoor/outdoor unit connecting
wire is out of specified capacity.
connected to one outdoor unit.
circuit of outdoor controller
circuit board.
circuit of indoor controller cir-
cuit board.
board.
have refrigerant address “0” .
(In case of group control)
supply or indoor / outdoor unit
connecting wire.
indoor/outdoor unit connecting
wire.
indoor/outdoor unit connecting
wire is out of specified capacity.
circuit of outdoor controller circuit
board.
circuit of indoor controller circuit
board.
board.
have refrigerant address “0” .
(In case of group control)
supply or indoor/outdoor unit
connecting wire.
outdoor unit connecting wire.
outdoor unit connecting wire is
out of specified capacity.
have refrigerant address “0” .
(In case of group control)
supply or indoor/outdoor unit
connecting wire.
Judgment and action
1 Check disconnection or looseness or polarity
of indoor/outdoor unit connecting wire of
indoor and outdoor units.
2 Check diameter and length of indoor/outdoor
unit connecting wire.
Total wiring length: 80m
(including wiring connecting each indoor unit
and between indoor and outdoor unit)
Also check if the connection order of flat
cable is S1, S2, S3.
3 Check the number of indoor units that are
connected to one outdoor unit. (If EA is
detected)
SW1-6 on outdoor controller circuit board)
are overlapping in case of group control
system.
8 Check transmission path, and remove the
cause.
w The descriptions above, 1-8, are for EA, Eb
and EC.
33
Page 34
<Abnormalities detected while unit is operating>
<Abnormalities detected while unit is operating>
Error Code
U1
(1302)
U2
(1102)
Meaning of error code and detection method
Abnormal high pressure (High-pressure
switch 63H worked)
Abnormal if high-pressure switch 63H
worked ( 3.6MPa ) during compressor
operation.
63H: High-pressure switch
Abnormal high discharging temperature
(1) Abnormal if discharge temperature
thermistor (TH4) exceeds 125: or
110: continuously for 5 minutes.
Abnormal if condenser/evaporator
temperature thermistor (TH5) exceeds
40: during defrosting and discharge
temperature thermistor (TH4) exceeds
110:.
(2) Abnormal if discharge super heat
(Cooling: TH4 – TH5 / Heating: TH4 –
TH6) increases.
All the conditions in Aor B are detected
simultaneously for 10 minutes
continuously after 6 minutes past from
compressor start-up (including the
thermostat indication or recovery from
defrosting).
<Condition A>
• Heating mode
• When discharge super heat is less
than 70 deg.
• When the TH6 temp is more than the
value obtained by TH7 – 5 deg.
• When the condensing temp of TH5 is
less than 35:.
Case
1 Short cycle of indoor unit.
2 Clogged filter of indoor unit.
3 Decreased airflow caused by
dirt of indoor fan.
4 Dirt of indoor heat exchanger.
5 Locked indoor fan motor.
6 Malfunction of indoor fan motor.
7 Defective operation of stop
valve (Not full open).
8 Clogged or broken pipe.
9 Locked outdoor fan motor.
0 Malfunction of outdoor fan
motor.
1 Short cycle of outdoor unit.
2 Dirt of outdoor heat exchanger.
3 Decreased airflow caused by
defective inspection of outside
temperature thermistor
(It detects lower temperature
than actual temperature.)
4 Disconnection or contact failure
of connector (63H) on outdoor
controller circuit board.
7 Check if stop valve is full open.
8 Check piping and repair defectives.
9~2 Check outdoor unit and repair defectives.
3 Check the inspected temperature of outside
temperature thermistor on LED display.
(SW2 on A-Control Service Tool : Refer to
page 57.)
4~6Put the power off and check F5 is
displayed when the power is put again.
When F5 is displayed, refer to “Judgment
and action” for F5.
7 Check linear expansion valve.
Refer to 13-6.
8 Replace outdoor controller circuit board or
FAN controller circuit board.
1 Check intake super heat.
Check leakage of refrigerant.
Charge additional refrigerant.
2 Check if stop valve is full open.
34 Put the power off and check if U3 is dis-
played when the power is put again.
When U3 is displayed, refer to “Judgement
and action” for U3.
5 Check linear expansion valve.
Refer to 13-6.
<Condition B>
• During comp operation (Cooling and
Heating)
• When discharge super heat is less
than 80 deg in Cooling.
• When discharge super heat is less
than 90 deg in Heating.
• When condensing temp of TH6 is
more than –40:. (In Cooling only.)
34
Page 35
Error Code
U3
(5104)
U4
TH3, TH32
(
:5105
(TH6:5107)
(TH7:5106)
(TH8:5110)
U5
(4230)
Meaning of error code and detection method
Open/short circuit of discharge
temperature thermistor (TH4)
Abnormal if open (3: or less) or short
(217: or more) is detected during
compressor operation.
(Detection is inoperative for 10 minutes of
compressor starting process and for 10
minutes after and during defrosting.)
Open/short of outdoor unit thermistors
(TH3, TH32, TH6, TH7, and TH8)
Abnormal if open or short is detected
during compressor operation.
Open detection of thermistors TH3 and
TH6 is inoperative for 10 seconds to 10
minutes after compressor starting and 10
minutes after and during defrosting.
WCheck which unit has abnormality in its
thermistor by switching the mode of
SW2.
)
(Refer to page 62.)
Thermistors
Symbol
TH3, TH32
TH6
TH7
Thermistor <Outdoor pipe>
Thermistor <Outdoor 2-phase pipe>
Thermistor <Outdoor>
TH8
Abnormal temperature of heat sink
Abnormal if heat sink thermistor TH8,
which is built in the power module, detects
temperature indicated below.
RP8YHA
RP10YHA
......
....
95:
95:
Name
Internal thermistor
Case
1 Disconnection or contact
failure of connector (TH4) on
the outdoor controller circuit
board.
TH6/TH7) on the outdoor controller circuit board.
Check connection of connector (CN3) on the
outdoor power circuit board.
Check breaking of the lead wire for thermistor
)
(TH3, TH32, TH6,TH7,TH8). Refer to 13-9.
2 Check resistance value of thermistor (TH3,
TH32, TH6,TH7,TH8) or check temperature
by microcomputer.
(Thermistor/TH3,TH32,TH6,TH7,TH8: Refer to13-6.)
(SW2 on A-Control Service Tool: Refer to
page 57.)
3 Replace outdoor controller circuit board.
WEmergency operation is available in case of
abnormalities of TH3, TH32, TH6 and TH7.
Refer to 13-8.
90: or above
90: or above
90: or above
170: or above
12 Check the resistance of outdoor fan motor
wiring.
Refer to “13-6 HOW TO CHECK THE PART”.
3 Check air flow path for cooling.
4 Check if there is something which causes
temperature rise around outdoor unit.
(Upper limit of ambient temperature is 46:.)
Turn off power, and on again to check if U5
is displayed within 30 minutes.
If U4 is displayed instead of U5, follow the
action to be taken for U4.
5 Check TH8 temperature by microcomputer.
(SW2 on A-Control Service Tool: Refer to
page 57.)
Abnormal if overcurrent of DC bus or
compressor is detected within 30 seconds
after compressor starts operating.
Abnormality of power module
Check abnormality by driving power module
in case overcurrent is detected.
1 Stop valve is closed.
2 Decrease of power supply
voltage.
3 Looseness, disconnection or
converse of compressor wiring
connection.
4 Defective compressor.
5 Defective outdoor power circuit
board.
1 Outdoor stop valve is closed.
2 Decrease of power supply voltage
3 Looseness, disconnection or
converse of compressor wiring
connection.
4 Defective compressor.
5 Defective outdoor power circuit
board.
35
1 Open stop valve.
2 Check facility of power supply.
3 Correct the wiring (U•V•W phase) to
compressor.
Refer to page 52 and 53.
4 Check compressor.
Refer to 13-6.
5 Replace outdoor power circuit board.
1 Open stop valve.
2 Check facility of power supply.
3 Correct the wiring (U•V•W phase) to
compressor. Refer to 13-9.
4 Check compressor referring to 13-6.
5 Replace outdoor power circuit board.
Page 36
Error Code
U9
(4220)
Meaning of error code and detection method
Abnormality such as overvoltage or
voltage shortage and abnormal
synchronous signal to main circuit
Abnormal if any of followings are detected
during compressor operation;
• Instantaneous decrease of DC bus voltage
to 400V.
• Increase of DC bus voltage to 760V.
• Decrease of input current of outdoor unit
to 0.5A only if operation frequency is more
than or equal to 40Hz or compressor
current is more than or equal to 5A.
1 Decrease of power supply voltage.
2 Defective 52C drive circuit of
3 Disconnection or loose
4 Defective ACCT of outdoor
5 Disconnection or loose
Case
outdoor power circuit board.
connection of CN5 on the
outdoor power circuit board or
outdoor noise filter circuit
board.
noise filter circuit board.
connection of CN2 on the
outdoor power circuit board.
Judgment and action
1 Check the facility of power supply.
2 Replace outdoor power circuit board.
3 Check CN5 wiring on the outdoor power
circuit board or outdoor noise filter circuit
board.
Refer to 13-9.
4 Replace outdoor noise filter circuit board.
5 Check CN2 wiring on the outdoor power
controller circuit board, disconnect the wiring
to compressor from the outdoor power circuit
board and check the output voltage among
phases, U, V, W, during test run. No defect
on board if voltage among phases (U-V, V-W
and W-U) is same. Make sure to perform the
voltage check with same performing frequency.
8 Replace outdoor power circuit board.
36
Page 37
Error Code
E0
(No display)
E3
(No display)
E8
(6840)
E9
(6841)
EF
(6607
or
6608)
Ed
(0403)
Meaning of error code and detection method
Remote controller communication error
(Signal receiving error)
(1) Abnormal if any signal from IC of refrig-
erant address “0” could not be normally
received for three minutes.
(2) Abnormal if sub remote controller could
not receive any signal for two minutes.
Remote controller communication error
(Transmitting error)
(1) Abnormal if sub remote controller could
not find blank of transmission path for
six seconds.
(2) Abnormal if remote controller could not
finish transmitting 30 times continuously.
Indoor/outdoor unit communication
error (Signal receiving error)
(Outdoor unit)
(1) Abnormal if outdoor controller circuit
board could not receive anything
normally for three minutes.
Indoor/outdoor unit communication
error (Transmitting error) (Outdoor unit)
(1) Abnormal if “0” receiving is detected 30
times continuously though outdoor controller circuit board has transmitted “1”.
(2) Abnormal if outdoor controller circuit
board could not find blank of transmission
path for three minutes.
Non defined error code
This code is displayed when non defined
error code is received.
Serial communication error
1.Abnormal if serial communication
between outdoor controller circuit
board and outdoor power circuit board
is defective.
2. Abnormal if communication between
outdoor controller circuit board and
M-NET board is not available.
1 Defective communication cir-
2 Defective communication cir-
3 Noise has entered into trans-
4 All remote controllers are set
1 Defective communication cir-
2 Noise has entered into trans-
3 Two remote controllers are set
1 Contact failure of indoor/out-
2 Defective communication circuit
3 Defective communication cir-
4 Noise has entered into indoor/
1 Indoor/ outdoor unit connecting
2 Defective communication circuit
3 Noise has entered power supply.
4 Noise has entered indoor/ out-
1 Noise has entered transmis-
2 Noise has entered indoor/ out-
3 Outdoor unit is not a series of
4 Model name of remote con-
1 Breaking of wire or contact
2 Breaking of wire or contact
3 Defective communication circuit
4 Defective communication circuit
1 Breaking of wire or contact
2 Contact failure of M-NET board
3 Noise has entered into M-NET
Case
cuit of remote controller.
cuit of indoor controller circuit
board of refrigerant address
“0”.
mission line of remote controller.
as “sub” remote controller. In
this case, E4 is displayed at
outdoor LED, and E0 is displayed at remote controller.
cuit of remote controller.
mission line of remote con-
troller.
as "main."
(In case of 2 remote controllers).
door unit connecting wire.
of outdoor controller circuit board.
cuit of indoor controller circuit
board.
outdoor unit connecting wire.
wire has contact failure.
of outdoor controller circuit board.
door unit connecting wire.
sion wire of remote controller.
door unit connecting wire.
power-inverter.
troller is PAR-S25A.
failure of connector CN2
between the outdoor controller
circuit board and the outdoor
power circuit board.
failure of connector CN4
between the outdoor controller
circuit board and the outdoor
power circuit board.
of outdoor power circuit board
of outdoor controller circuit board
for outdoor power circuit board
failure of connector between
outdoor controller circuit board
and M-NET board
power supply line
transmission wire.
Judgment and action
1~3 Diagnose remote controller.
Take actions as follows according to
diagnosis result.
a) When “RC OK” is displayed,
remote controllers have no problem.
Put the power off, and on again to
check. If, “H0” is displayed for four
minutes or more, replace indoor controller circuit board.
b) When “RC NG” is displayed,
replace remote controller.
c) When “RC E3” or “ERC 00-66” is dis-
played, noise may be causing abnormality.
4 Set a remote controller to main, and the
other to sub.
w The descriptions above, 1-3, are for E0 and
E3.
1 Check disconnection or looseness of indoor/
outdoor unit connecting wire of indoor or outdoor units.
2~4 Put the power off, and on again to check.
Replace indoor controller circuit board or
outdoor controller circuit board if abnormality is
displayed again.
1 Check disconnection or looseness of
indoor/outdoor unit connecting wire.
2~4 Put the power off, and on again to check.
Replace outdoor controller circuit board if
abnormality is displayed again.
12 Put the power off, and on again to check.
Replace indoor controller circuit board or
outdoor controller circuit board if abnormality is displayed again.
3 Replace outdoor unit with power-inverter type
outdoor unit.
4 Replace remote controller with MA remote
controller.
12 Check connection of each connector CN2
and CN4 between the outdoor controller
circuit board and the outdoor power circuit
board.
connection wire between outdoor controller circuit board (CNMNT) and M-NET board (CN5).
2 Check disconnection, looseness, or breaking of
connection wire between outdoor controller circuit board(CNMNT) and M-NET board (CND).
3 Refer to (4) in “ 2-2. M-NET Wiring method ”
on Service Technical Guide for OCT04.
37
Page 38
Error Code
123456
ON
OFF
123456
ON
OFF
123456
ON
OFF
123456
ON
OFF
A-Control Service Tool SW2 setting
Temperature display of indoor liquid pipe
Indoor 1
Temperature display of indoor liquid pipe
Indoor 2
Temperature display of indoor condenser/
evaporator pipe Indoor 1
Temperature display of indoor condenser/
evaporator pipe Indoor 2
P8
Meaning of error code and detection method
Abnormality of pipe temperature
1 Slight temperature difference
<Cooling mode>
Detected as abnormal when the pipe temperature is not in the cooling range 3 minutes later of compressor start and 6 minutes later of the liquid or condenser/evaporator pipe is out of cooling range.
Note 1) It takes at least 9 min. to detect.
Note 2) Abnormality P8 is not detected in
drying mode.
Cooling range : Indoor pipe temperature
2 Converse connection of
(TH2 or TH5) – intake temperature
(TH1) [ -3 deg
TH: Lower temperature between: liquid
3 Converse wiring of indoor/
pipe temperature and condenser/
evaporator temperature
4 Defective detection of indoor
<Heating mode>
When 10 seconds have passed after the
compressor starts operation and the hot
adjustment mode has finished, the unit is
5 Stop valve is not opened
detected as abnormal when
condenser/evaporator pipe temperature is
not in heating range within 20 minutes.
between indoor room
temperature and pipe <liquid
or condenser / evaporator>
temperature thermistor.
• Shortage of refrigerant
• Disconnected holder of pipe
<liquid or condenser /
evaporator> thermistor
• Defective refrigerant circuit
extension pipe (on plural units
connection).
outdoor unit connecting wire
(on plural units connection).
room temperature and pipe
<condenser / evaporator>
temperature thermistor.
completely.
Judgment and action
1~4Check pipe <liquid or condenser /
evaporator> temperature with room
temperature display on remote
controller and outdoor controller circuit
board.
Pipe <liquid or condenser / evaporator>
temperature display is indicated by
setting SW2 of outdoor controller circuit
board as follows.
Conduct temperature check with outdoor
controller circuit board after connecting
(
‘A-Control Service Tool(PAC-SK52ST)’.
23Check converse connection of extension
pipe or converse wiring of indoor/outdoor
unit connecting wire.
)
<M-NET communication error>
Error Code
A0
(6600)
A2
(6602)
A3
(6603)
Meaning of error code and detection method
Address duplicate definition
This error is displayed when transmission
from the units of same address is detected.
Note) The address and attribute displayed
Hard ware error of transmission
processor
Transmission processor intended to transmit “0”, but “1” appeared on transmission
wire.
Note) The address and attribute display at
BUS BUSY
1. Over error by collision damage
Abnormal if transmitting is not possible
for 8-10 minutes continuously because
of collision of transmission.
2. Data could not reach transmission wire
for 8-10 minutes continuously because
of noise or etc.
Note) The address and attribute displayed
at remote controller indicate the controller that detected abnormality.
remote controller indicate the controller that detected abnormality.
at remote controller indicate the controller that detected abnormality.
(Note) “Indoor unit” in the text indicates M-NET board in outdoor unit.
CaseJudgment and action
1 There are two or more same
address of controller of outdoor unit, indoor unit, FRESH
MASTER, or LOSSNAY.
2 Noise has entered into trans-
mission signal and signal was
transformed.
1
Error is detected if wave form is
transformed when wiring works of
transmission wire of outdoor unit,
indoor unit, FRESH MASTER or
LOSSNAYare done, or polarity is
changed with the power on and
transmission data collide each other.
2 Defective transmitting receiving
circuit of transmission processor.
Search the unit with same address as abnormality
occurred. If the same address is found, shut of the
power supply of outdoor unit and indoor unit and
FRESH MASTER or LOSSNAY at the same time
for two minutes or more after the address is corrected, and put the power on again.
Check transmission wave form or noise on transmission wire.
1 If the works of transmission wire is done with
the power on, shut off the power supply of
outdoor unit and indoor unit and FRESH
MASTER or LOSSNAY at the same time for
two minutes or more, and put the power on
again.
2 Check transmission wave form or noise on
transmission wire.
3 Transmission data is changed by
the noise on transmission.
Transmission processor could
1
not transmit because short cycle
voltage of noise and the like
have entered into transmission
wire continuously.
2 Transmission quantity has
increased and transmission is
not possible because there was
wiring mistake of terminal block
for transmission wire (TB3) and
terminal block for central control
(TB7) in outdoor unit.
3 Transmission are mixed with
others and occupation rate on
transmission wire rose because
of defective repeater (a function
to connector or disconnect transmission of control and central
control system) of outdoor unit,
then abnormality is detected.
1 Check if transmission wire of indoor unit,
FRESH MASTER, LOSSNAY, or remote controller is not connected to terminal block for
central control (TB7) of outdoor unit.
2 Check if transmission wore of indoor unit,
FRESH MASTER or LOSSNAY is not connected to terminal block for transmission
wire of outdoor unit.
3 Check if terminal block for transmission wire
(TB3) and terminal block for central control
(TB7) is not connected.
4 Check transmission wave form or noise on
transmission wire.
38
Page 39
Error Code
A6
(6606)
Meaning of error code and detection method
Communication error with communica-
tion processor
Defective communication between unit
processor and transmission processor
Note) The address and attribute display at
remote controller indicate the controller that detected abnormality.
1 Data of transmission proces-
2 Address forwarding from unit
CaseJudgment and action
sor or unit processor is not
transmitted normally because
of accidental trouble such as
noise or thunder surge.
processor is not transmitted
normally because of defective
transmission processor hardware.
Shut of the power supply of outdoor unit and
indoor unit and FRESH MASTER or LOSSNAY
at the same time for two minutes or more, and
put the power on again. System returns normally if abnormality was accidental malfunction.
If the same abnormality generates again,
abnormality-generated controller may be defective.
A7
(6607)
NO ACK signal
1. Transmitting side controller detects
abnormal if a massage was transmitted
but there is no reply (ACK) that a massage was received. Transmitting side
detects abnormality every 30 seconds,
six times continuously.
Note) The address and attribute displayed
at remote controller is indicate the
controller that did not reply (ACK).
2. If displayed address or attribute is outdoor unit,
Indoor unit detects abnormality when
indoor unit transmitted to outdoor unit
and there was no reply (ACK).
3. If displayed address or attribute is
indoor unit,
Remote controller detects abnormality
when remote controller transmitted to
indoor unit and there was no reply
(ACK).
Common factor that has no relation with abnormality source.
1 The unit of former address
does not exist as address
switch has changed while the
unit was energized.
2 Extinction of transmission wire
voltage and signal is caused by
over-range transmission wire.
• Maximum distance ······200m
•
Remote controller line
3 Extinction of transmission wire
voltage and signal is caused by
type-unmatched transmission
wire.
Type······
With shield wire-
CVVS, CPEVS
With normal wire (no shield)-
VCTF, VCTFK, CVV
CVS, VVR, VVF, VCT
Diameter····1.25mm2or more
4 Extinction of transmission wire
voltage and signal is caused
by over-numbered units.
indoor unit of multi- refrigerant
system, if remote controller
transmit to indoor unit while
outdoor unit power supply of
one refrigerant system is put
off or within two minutes of
restart, abnormality is detected.
2 Contact failure of transmission
wire of remote controller or
indoor unit.
3 Disconnection of transmission
connector (CN2M) of indoor unit.
4 Defective transmitting receiv-
ing circuit of indoor unit or
remote controller.
··(12m)
Always try the followings when the error
“A7” occurs.
1 Shut off the power supply of outdoor unit and
indoor unit and FRESH MASTER or LOSSNAY at the same time for two minutes or
more, and put the power on again. If malfunction was accidental, the unit returns to
normal.
2 Check address switch of abnormality-gener-
ated address.
3 Check disconnection or looseness of abnor-
mality-generated or abnormality-detected
transmission wire (terminal block and connector)
4 Check if tolerance range of transmission wire
is not exceeded.
5 Check if type of transmission wire is correct
or not.
If there were some trouble of 1-5 above,
repair the defective, then shut off the power
supply of outdoor unit and indoor unit and
FRESH MASTER or LOSSNAY at the same
time for two minutes or more, and put the
power on again.
• If there was no trouble with 1-5 above in single refrigerant system (one outdoor unit), controller of displayed address or attribute is
defective.
• If there was no trouble with 1-5 above in different refrigerant system (two or more outdoor
units), judge with 6.
6 If address of abnormality source is the
address that should not exist, there is the
unit that memorizes nonexistent address
information. Delete useless address information with manual setting function of remote
controller.
Only the system FRESH MASTER or LOSSNAY are connected to, or the system that is
equipped with group setting of different
refrigerant system.
If there was no trouble with 1-6 above,
replace the controller board of displayed
address or attribute.
If the unit does not return normally, multi-controller board of outdoor unit may be defective
(repeater circuit).
Replace multi-controller board one by one to
check if the unit returns normally.
39
Continued to the next page.
Page 40
From the previous page.
Error Code
Meaning of error code and detection method
4. If displayed address or attribute is
remote controller,
Indoor unit detects abnormality when
indoor unit transmitted to remote controller and there was no reply (ACK).
CaseJudgment and action
1 During group operation with
indoor unit of multi- refrigerant
system, if indoor unit transmit
to remote controller while outdoor unit power supply of one
refrigerant system is put off or
within two minutes of restart,
abnormality is detected.
2 Contact failure of transmission
wire of remote controller or
indoor unit.
3 Disconnection of transmission
connector (CN2M) of indoor
unit.
4 Defective transmitting receiv-
ing circuit of indoor unit or
remote controller.
Same as mentioned in “A7” of the previous
page.
A7
(6607)
5. If displayed address or attribute is
FRESH MASTER,
Indoor unit detects abnormality when
indoor unit transmitted to FRESH MASTER and there was no reply (ACK).
6. If displayed address or attribute is
LOSSNAY,
Indoor unit detects abnormality when
indoor unit transmitted to LOSSNAY and
there was no reply (ACK).
1 During sequential operation of
indoor unit and FRESH MASTER of other refrigerant system, if indoor unit transmits to
FRESH MASTER while outdoor unit power supply of
same refrigerant system with
FRESH MASTER is put off or
within two minutes of restart,
abnormality is detected.
2 Contact failure of transmission
wire of indoor unit or FRESH
MASTER.
3 Disconnection of transmission
connector (CN2M) of indoor
unit or FRESH MASTER.
4 Defective transmitting receiv-
ing circuit of indoor unit or
FRESH MASTER.
1 If the power supply of LOSS-
NAY is off, indoor unit detects
abnormality when it transmits
to LOSSNAY.
2 During sequential operation of
indoor unit and LOSSNAY of
other refrigerant system, if
indoor unit transmits to LOSSNAY while outdoor unit power
supply of same refrigerant system with LOSSNAY is put off
or within two minutes of
restart, abnormality is detected.
3 Contact failure of transmission
wire of indoor unit of LOSSNAY.
4 Disconnection of transmission
connector (CN2M) of indoor
unit.
5 Defective transmitting receiv-
ing circuit of indoor unit or
LOSSNAY.
7. If displayed address or attribute is
nonexistent,
1 The unit of former address
does not exist as address
switch has changed while the
unit was energized.
2 Abnormality is detected when
indoor unit transmitted
because the address of
FRESH MASTER and LOSSNAY are changed after
sequential operation of
FRESH MASTER and LOSSNAY by remote controller.
40
Page 41
Error Code
A8
(6608)
Meaning of error code and detection method
M-NET•NO RESPONSE
Abnormal if a massage was transmitted
and there were reply (ACK) that massage
was received, but response command
does not return. Transmitting side detects
abnormality every 30 seconds, six times
continuously.
Note) The address and attribute displayed
at remote controller is indicate the
controller that did not reply (ACK).
1 Transmitting condition is
2 Extension of transmission wire
3 Extension of transmission wire
4 Accidental malfunction of
CaseJudgment and action
repeated fault because of
noise and the like.
voltage and signal is caused
by over-range transmission
wire.
• Maximum distance ······200m
Remote controller line
•
voltage and signal is caused
by type-unmatched transmission wire.
Type······
With shield wire-
CVVS, CPEVS
With normal wire (no shield)-
VCTF, VCTFK, CVV
CVS, VVR, VVF, VCT
Diameter····1.25mm2or more
abnormality-generated
controller.
··(12m)
13-5. TROUBLESHOOTING BY INFERIOR PHENOMENA
Phenomena
1. Remote controller display does not
work.
2. “H0” display is remained on the
remote controller.
1DC12V is not supplied to remote controller.
(Power supply display is not indicated on LCD.)
2DC12~15V is supplied to remote controller, however,
no display is indicated.
• “H0” is not displayed.
• “H0” is displayed.
1At longest 2 minutes after the power supply “H0” is
displayed to start up.
2Communication error between the remote controller
and indoor unit.
3Communication error between the indoor and outdoor
unit.
4Outdoor unit protection device connector is open.
FactorCountermeasure
1 Check transmission wave form or noise on
transmission wire.
2 Shut off the power supply of outdoor unit and
indoor unit and FRESH MASTER or LOSSNAY at the same time for two minutes or
more, and put the power on again. If malfunction was accidental, the unit returns to
normal. If the same abnormality generates
again, controller of displayed address and
attribute may be defective.
1Check LED2 on indoor controller circuit
board.
(1) When LED2 is lit.
Check the remote controller wiring for
breaking or contact failure.
(2) When LED2 is blinking.
Check short circuit of remote controller
wiring.
(3) When LED2 is not lit.
Refer to No.3 below.
2Check the following.
• Failure of remote controller if “H0” is not
displayed
• Refer to No.2 below if “H0” is displayed.
1Normal operation
2Self-diagnosis of remote controller
3“H0” is displayed for 6 minutes at most. in
case of indoor/outdoor unit communica-
tion error. Check LED3 on indoor controller board.
(1)When LED3 is not blinking.
Check indoor/outdoor connecting wire
for mis-wiring.
(Converse wiring of S1 and S2, or
break of S3 wiring.)
(2)When LED3 is blinking.
Indoor/outdoor connecting wire is normal.
4Check LED display on outdoor controller
circuit board. Refer to page 55 and 56.
Check protection device connector (63L
and 63H) for contact failure.
Refer to 13-9.
3. When pressing the remote controller
operation switch the OPERATION
display is appeared but it will be
turned off soon.
4. Even controlling by the wireless
remote controller no beep is heard
and the unit does not start operating. Operation display is indicated
on wireless remote controller.
1After cancelling to select function from the remote
controller, the remote controller operation switch will
be not accepted for approx. 30 seconds.
1The pair number settings of the wireless remote
controller and indoor controller circuit board are mismatched.
41
1Normal operation
1Check the pair number settings.
Page 42
Phenomena
5. When operating by the wireless
remote controller, beep sound is
heard, however, unit does not start
operating.
6. Remote controller display works
normally and the unit performs
cooling operation, however, the
capacity cannot be fully obtained.
(The air does not cool well.)
7. Remote controller display works normally and the unit performs heating
operation, however, the capacity
cannot be fully obtained.
Factor
1No operation for 2 minutes at most after the power
supply ON.
2Hand-held remote controller operation is prohibited.
• Remote controlling adaptor is connected to CN32
on the indoor controller circuit board.
• Hand-held remote controller operation is prohibited
by centralised controller etc. since it is connected to
MELANS.
3Factor of No.2 above.
1Refrigerant shortage.
2Filter clogging.
3Heat exchanger clogging.
4Air duct short cycle.
1Linear expansion valve fault.
Opening cannot be adjusted well due to linear expansion valve fault.
2Refrigerant shortage.
3Lack of insulation for refrigerant piping.
4Filter clogging.
5Heat exchanger clogging.
6Air duct short cycle .
7Bypass circuit of outdoor unit fault.
Countermeasure
1Normal operation.
2Normal operation.
3Check the details of No.2 above.
1• If refrigerant leaks, discharging tempera-
ture rises and LEV opening increases.
Inspect leakage by checking the tem-
perature and opening.
• Check pipe connections for gas leakage.
2Open suction grill and check the filter.
Clean the filter by removing dirt or dust on
it.
3• If the filter is clogged, indoor pipe tem-
perature rises and discharging pressure
increases. Check if heat exchanger is
clogged by inspecting discharging pressure.
• Clean the heat exchanger.
4Remove the shield.
1• Discharging temperature and indoor
heat exchanger temperature does not
rise.
Inspect the failure by checking discharging pressure.
• Replace linear expansion valve.
2• If refrigerant leaks, discharging tempera
ture rises and LEV opening increases.
Inspect leakage by checking the temperature and opening.
• Check pipe connections for gas leakage.
3Check the insulation.
4Open suction grill and check the filter.
Clean the filter by removing dirt or dust on
it.
5• If the filter is clogged, indoor pipe tem-
perature rises and discharging pressure
increases. Check if heat exchanger is
clogged by inspecting discharging pressure.
• Clean the heat exchanger.
6Remove the shield.
7Check refrigerant system during operation.
8. 1For 3 minutes after temperature
adjuster turns off, the compressor
will not start operating even if
temperature adjuster is turned on.
2For 3 minutes after temperature
adjuster turns on, the compressor
will not stop operating even if
temperature adjuster is turned off.
(Compressor stops operating
immediately when turning off by
the remote controller.)
9. Defective fan of outdoor units.
(Not rotate)
12Normal operation.
(For protection of compressor)
1Defective fan motor (Winding open or shoot).
2Disconnection or loose connection of connector on
outdoor Fan controller circuit board.
3Defective Outdoor fan controller circuit board.
42
12Normal operation
1Check the winding resistance.
Refer to 13-6.
However, make sure to check the resistance after it gets cold enough ([87i15:),
as there is a possibility that the temperature protector housed in the fan motor is
working.
2Check CN2, CN5, CN6, TAB-U, TAB-V,
TAB-W, TAB-W wiring.
3Replace outdoor fan controller circuit board.
Page 43
13-6. HOW TO CHECK THE PARTS
1
2
3
4
5
6
M
Blue
Brown
Yellow
Orange
Red
White
Parts name
Check points
Disconnect the connector then measure the resistance using a tester.
(Surrounding temperature 10:~30:)
Disconnect the connector then measure the resistance using a tester.
(
Winding temperature 20
:)
Thermistor (TH3, TH32)
<Outdoor pipe>
Thermistor (TH4)
<Discharge>
Thermistor (TH6)
<Outdoor 2-phase pipe>
Thermistor (TH7)
<Outdoor>
Normal
160k"~410k"
4.3k"~9.6k"
TH4
TH3, TH32
TH6
TH7
Abnormal
Open or short
Normal
Red - White
Red - Orange
Brown - Yellow
Brown - Blue
Abnormal
46±4"
Measure the resistance between the terminals using a tester.
(Surrounding temperature 20
:
)
Solenoid valve coil
<Four-way valve>
(21S4)
Pin number of relay
connector is different
from that motor
connector
Motor for compressor
(MC)
Linear expansion valve
( LEV(A) )
Normal
Abnormal
Open or short
Open or short
Measure the resistance between the terminals using a tester.
(Surrounding temperature 20
:
)
Normal
1197±10"
Abnormal
Open or short
Solenoid valve coil
<Bypass valve>
(SV)
Measure the resistance between the terminals using a tester.
(Winding temperature 20:)
Fan motor(MF1,MF2)
Normal
15.3±0.5"
1370±100"
0.72"
Measure the resistance between the terminals using a tester.
(Winding temperature 20
(1) Operation summary of the linear expansion valve.
• Linear expansion valve open/close through stepping motor after receiving the pulse signal from the outdoor controller circuit board.
• Valve position can be changed in proportion to the number of pulse signal.
<Connection between the indoor controller circuit board and the linear expansion valve>
❈ 1. When linear expansion valve operation stops, all output phase
become OFF.
❈ When the switch is turned on, 700 pulse closing valve signal will
be sent till it goes to
A point in order to define the valve position.
(The pulse signal is being sent for about 20 seconds.)
When the valve moves smoothly, there is no noise or vibration
occurring from the linear expansion valve : however, when the
pulse number moves from B to A or when the valve is locked,
more noise can be heard than normal situation.
No noise is heard when the pulse number moves from B to A in
case coil is burn out or motor is locked by open-phase.
❈ Noise can be detected by placing the ear against the screw dri-
ver handle while putting the screw driver to the linear expansion
valve.
45
Page 46
(3) How to attach and detach the coil of linear expansion valve
<Composition>
Linear expansion valve is separable into the main body and the coil as shown in the diagram below.
Coil
Lead wire
<How to detach the coil>
Hold the lower part of the main body (shown as A) firmly so that
the main body does not move and detach the coil by pulling it
upward.
Be sure to detach the coil holding main body firmly. Otherwise
pipes can bend due to pressure.
Stopper
Main body
<How to attach the coil>
Hold the lower part of the main body (shown as A) firmly so that
the main body does not move and attach the coil by inserting it
downward into the main body. Then securely attach the coil stopper to pipe B. (At this time, be careful that stress is not added to
lead wire and main body is not wound by lead wire.) If the stopper is not firmly attached to pipe B, coil may be detached from
the main body and that can cause defective operation of linear
expansion valve.
To prevent piping stress, be sure to attach the coil holding the
main body of linear expansion valve firmly. Otherwise pipe may
break.
B
A
A
Be sure to attach the
stopper to pipe B.
46
Page 47
13-8. EMERGENCY OPERATION
SW4
12Cooling
Heating
ON
ON
OFF
CN31
Shorting pins
SW4
12Cooling
Heating
ON
Inspected content
Open/short of pipe thermistor (TH3, TH32/TH6)
Indoor/outdoor unit communication error •Signal receiving error (Outdoor unit)
Indoor/outdoor unit communication error •Transmitting error (Indoor unit)
Communication error other than outdoor unit
Communication error between outdoor controller board and M-NET board (Serial communication error)
Error code
U4
E8
E9
E0 ~ E7
Ed
●When following abnormalities occur, emergency operation will be available.
(1) When the error codes shown below are displayed on outdoor unit or microcomputer for wired remote controller or indoor
unit has a failure, but no other problems are found, emergency operation will be available by setting the emergency operation switch (SWE) to ON and short-circuiting the connector (CN31) on outdoor controller circuit board.
(2) Check the following items and cautions for emergency operation
1Make sure that there is no abnormality in outdoor unit other than the above abnormalities. (Emergency operation will
not be available when error code other than the above are indicated.)
2For emergency operation, it is necessary to set the emergency operation switch (SWE) on indoor controller circuit board.
Refer to the electrical wiring diagram of indoor unit for how to set the indoor unit.)
3During emergency operation, the air-conditioner will continuously be operated by supplying power and stopping it: It can
not be turned on or off by remote control, and temperature control is not possible.
4Do not perform emergency heating operation for an extended period of time: If the outdoor unit starts defrosting during
this period, cold air will blow out from the indoor unit.
5Do not perform emergency cooling operation for more than 10 hours: Neglecting this could result in freezing the heat
exchanger in indoor unit.
(3) Emergency operation procedure
1Turn the main power supply off.
2Turn on the emergency operation switch (SWE) on indoor controller circuit board.
3Set the shorting pins of emergency operation connector (CN31) on outdoor controller circuit board to ON.
4Use SW4-2 on outdoor controller circuit board to set the operation mode (cooling or heating). (SW4-1 is not used.)
5Turning the main power supply on will start the emergency operation.
(4) Releasing emergency operation
1Turn the main power supply off.
2Set the emergency operation switch (SWE) on indoor controller circuit board to OFF.
3Set the shorting pins of emergency operation connector (CN31) on outdoor controller
circuit board to OFF.
4Set SW4-2 on outdoor controller circuit board as shown in the right.
wIf shorting pins are not set on emergency operation connector (CN31), the setting remains OFF.
47
Page 48
13-9. TEST POINT DIAGRAM
Outdoor controller circuit board
PUHZ-RP8YHA
PUHZ-RP10YHA
CNS
(Indoor/outdoor unit
Communication
power supply
D71 Voltage
developed across:
16-30V DC
CNAC
2 to 4: Power supply for
outdoor controller
circuit board
(220V-240V AC)
1 to 3: Power supply for
indoor/outdoor unit connection wire
(220V-240V AC)
CN2
Connect to the outdoor
power circuit board (CN2)
1-5:
Power circuit board ➔
Transmitting signal to
the controller circuit board
(0-5V DC)
2-5: Zero cross signal
(0-5V DC)
3-4: Not used
6-5: 15V DC
7-5: 15V DC
[5: – 1,2,6,7: + ]
21S4
Four-way valve
SV2
Replace valve
CN4
Transmission
to outdoor
power circuit
board (CN4)
connecting wire)
+
–
LED1, LED2
Operating inspection
indicators
CN332
Power supply for outdoor
FAN controller circuit
board (CN2)
1—2 : 18VDC
[2: – 1: + ]
SW10
Model setup
CNDM
1 to 2: Input of silent mode
1 to 3: Input of external
contact point
CN31
Emergency
operation
63H
High pressure switch
SW4
Test operation
CNDC
310V~340V DC
+
Connect from
}
outdoor noise fil-
–
ter circuit board
(CNDC)
63L
Low pressure switch
CN331
Control signal for
outdoor FAN
controller circuit board
(CN6)
TH7
Thermistor<Outdoor>
TH6
Thermistor
<Outdoor 2-phase pipe>
TH3
Thermistor
<Outdoor pipe>
TH4
Thermistor
<Discharge>
LEV-A
Linear expansion
valve
CNVMNT
Connected to outdoor
M-NET board
CNM
A-control service
inspection kit
CNMNT
Connected to outdoor
M-NET board
SW5
Function switch
SW8
Model setup
Replacement operation
SW6
Model setup
SWP
Pump down
SW1
Forced defrost,
detect history
record reset,
refrigerant address
48
Page 49
Outdoor Power circuit board
PUHZ-RP8YHA
PUHZ-RP10YHA
Brief Check of POWER MODULE
W Usually, they are in a state of being short-circuited if they are broken.
Measure the resistance in the following points (connectors, etc.).
If they are short-circuited, it means that they are broken.
P2 - U , P2 - V , P2 - W , N2 - U , N2 - V , N2 - W
Note:The marks, L1 , L2 , L3 , N1 , N2 , P1 , P2 , U , V and W
shown in the diagram above are not actually printed on the board.
CN5
Detection of
primary current
(Connect to the
outdoor noise filter
circuit board (CN5))
TAB connecter
on X52A
Connect to the
RS resistor
CN4
Connect to the
outdoor controller
circuit board
(CN4)
CN2
Connect to the outdoor controller circuit
board (CN2)
1-5: Power circuit board
➔ Transmitting
signal to the controller board (0-5V DC)
2-5: Zero cross signal (0-5V DC)
3-4: Not used
6-5: 15V DC
[ 5 : – 1, 2, 6, 7 : + ]
7-5: 15V DC
W
W
W
L3
L2
P1L1
N2N1P2
TB-U, TB-V,
TB-W
Connect to the
compressor (MC)
Voltage among
phases:
10V-400V AC
TB-L1, TB-L2, TB-L3
Connect to the
outdoor noise filter
circuit board
(LO1, LO2, LO3)
380V-415V AC
TB-N1
Connect to the
smoothing capacitor
–
CB2
TB-P1
Connect to the
DCL
TB-P2
Connect to the DCL
and the smoothing capacitor
+
CB1
TB-C1
Connect to the
smoothing capacitor
– , CB2 +
CB1
49
CN1
–
282V DC
}
+
+
282V DC
}
Connect to the outdoor FAN
controller circuit board (CN5)
LI1-LI2/LI-LI3/LI3-LI1 : AC380/400/415V input
LI1-NI/LI2-NI/LI3-NI : AC220/230/240V input
(Connect to the terminal block (TB1))
CNAC1, CNAC2
AC220/230/240V
(Connect to the outdoor controller circuit
board (CNAC))
CNDC
(Connect to the outdoor power circuit
board (CNDC))
CNCT
Primary current
(Connect to the outdoor power circuit
board (CN5))
LO1, LO2, LO3
POWER SUPPLY
LO1-LO2/LO2-LO3/LO3-LO1 : AC380/400/415V OUTPUT
(Connect to the outdoor power circuit board (TB-L1, L2, L3))
50
Page 51
Outdoor Fan controller circuit board
PUHZ-RP8YHA
PUHZ-RP10YHA
U
TAB-U, TAB-V, TAB-W
(RED)
(WHITE)(BLACK)
Connect to the Fan motor (MF)
Voltage among phases : 20V-380V AC
V
W
N
531
P
12
CN2
Power supply from outdoor controller
circuit board (CN332)
1-2: 18V DC
[2: - , 1: + ]
CN5
+
282V DC
}
+
282V DC
}
-
Connect to the outdoor Power circuit board (CN1)
565V DC
}
Brief Check of IGBT
W Usually, they are in a state of being short-circuited if they are broken.
Measure the resistance in the following points (connectors, etc.).
If they are short-circuited, it means that they are broken.
Check of POWER MODULE
Check of IGBT circuit
P - U , P - V , P - W , N - U , N - V , N - W
Note:The marks, U , V and W
shown in the diagram above are not actually printed on the board.
12
CN6
Control signal from outdoor controller
circuit board (CN331)
51
Page 52
Switch
Type
of
switch
Dip
switch
SW1
1
2
No.
FunctionEffective timing
Action by the switch operation
Compulsory defrostingStartNormal
When compressor is working
in heating operation. w
Abnormal history clear
Refrigerant address setting
When power supply ON
ClearNormaloff or operating
SW4
1
6
5
4
3
2
Test runOperatingOFF
Under suspension
Test run mode settingHeatingCooling
ONOFF
123
0123
456ON123456ON123456ON123456
ON
123
4567
456ON123456ON123456ON123456
ON
123
891011
456ON123456ON123456ON123456
ON
123
12131415
456ON123456ON123456ON123456
ON
13-10. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS
1
2
3
4
3
4
5
6
1
2
3
ONOFF
No.
FunctionEffective timing
Action by the switch operation
No function
Power failure
automatic recovery w1
No function
No function
No function
No function
No function
No function
Use of existing pipe
Replacement operation
No function
Pump down
Switch
SW5
SW7
Dip
switch
Push
switch
SW8
SWP
Type of
Switch
—
Auto recovery
—
—
—
—
—
—
Used or RP10Y
w3
Start
—
Start
—
No auto recovery
—
—
—
—
—
—
Not used
Normal
—
Normal
—
When power supply ON
—
—
Always
—
—
—
—
Always
Under suspension
—
Under suspension
Switch to “Low-level
Sound Priority Mode”
w2
1
2
1
OFF
OFF
Mode 1
Mode 2
Mode 3
OFF
ON
ON
ON
2Cooling
Regulate max Hz
to spec.
Regulate max Hz
to spec.
Regulate max Hz
to spec.
Regulate max Hz
to spec.
Only TH7 } 30°C
regulate max Hz
to spec.
No regulation
Heating
Low-level Sound
Priority Mode
(1) Function of switches
Compulsory defrosting should be done as follows.
1Change the DIP SW1-1 on the outdoor controller circuit board from OFF to ON.
2Compulsory defrosting will start by the above operation 1 if these conditions written below are satisfied.
• Heat mode setting
• 10 minutes have passed since compressor started operating or previous compulsory defrosting finished.
• Pipe temperature is less than or equal to 8:.
3Compulsory defrosting will finish if certain conditions are satisfied.
wCompulsory defrosting can be done if above conditions are satisfied when DIP SW1-1 is changed from OFF to ON.
After DIP SW1-1 is changed from OFF to ON, there is no problem if DIP SW1-1 is left ON or changed to OFF again. This
depends on the service conditions.
w1 Power failure automatic recovery’ can be set by either remote controller or this DIP SW. If one of them is set to ON,
‘Auto recovery’ activates. Please set “Auto recovery” basically by remote controller because all units have not DIP SW.
w2 SW7-1,2 to “Low-level Sound Priority Mode” available in “Low-level Sound Priority Mode” mode only.
w3 RP10YHA is always ON.
Please refer to mode 01 in the table on 13-11.
52
Page 53
(2) Function of connectors
CN31
TypesConnectorFunctionEffective timing
Connector
SW6
SW8
SW10
SW6-1
SW6-2
SW6-3
SW6-4
SW6-5
SW6-6
SW8-1
SW10-1
SW10-2
Start
ShortOpen
Action by the switch operation
Model select
Emergency operation
When power supply ON
Normal
W 1
W 1
W 1 As for SW8, see also 13-10 (1) Function of switches, as SW8 sets the replacement operation as well.
53
Page 54
Special function
(a) Low-level sound priority mode (Local wiring)
Unit enters into Low-level sound priority mode by SW7-1, 2 and external signal input setting.
Inputting external signals to the outdoor unit decreases the outdoor unit operation sound 3 to 4 dB lower than that of usual.
Adding a commercial timer or on-off switch contactor setting to the CNDM connector which is optional contactor for Demand
input located on the outdoor controller circuit board enables to control compressor operation frequency. In Low-level sound
priority mode, the maximum outdoor fan steps is regulated to 8 and the maximum operation frequency of the compressor is
regulated to specified range in cool mode. In heating mode, the maximum compressor operation frequency is regulated to
specified range.
W The performance is depends on the load of conditioned air of the room.
How to wiring
<Low-level sound priority mode circuit>
Insulate this point securely as
this is not used.
Purchased at local
Relay
supply
~
SW1
X
X
SW1 : Switch
X : Relay (Contact spec. : DC1mA)
Max. 10 m including local wiring
Adaptor for external
signal input
(PAC-SC36NA)
Red
3
Brown
Orange
2
1
Outdoor unit
controller board
3
2
1
CNDM
<Outdoor unit controller board>
CNDM
1) Make the circuit as shown above with Adaptor for external signal input(PAC-SC36NA).
2) Turn SW1 to on for Low-level sound priority mode.
Turn SW1 to off to release Low-level sound priority mode and normal operation.
(b) On demand control (Local wiring)
Demand control is available by external input. In this mode, the outdoor unit stops and indoor unit operates with fan mode.
W The setting of SW-7 is not required for the demand control.
How to wiring
Basically, the wiring is the same.
Connect an SW 1 which is procured at field to the between Orange and Red(1 and 3) of the Adaptor for external signal
input(PAC-SC36NA), and insulate the tip of the brown lead wire.
54
Page 55
<Display function of inspection for outdoor unit>
F3
F5
F9
—
—
—
E6
E7
—
—
E0
E3
E4
E5
EF
Ed
A0~A8
[Display]
(1)Normal condition
(2)Abnormal condition
Unit condition
Outdoor controller circuit boardA-Control Service Tool
LED1 (Green)LED2 (Red)Error code
When the power is turned on
When unit stops
When compressor is warming up
When unit operates
LightedLighted
Lighted
Lighted
Lighted
Not lighted
Indication of the display
Alternately blinking display
Operation mode
Not lighted
Lighted
00, etc.
08, etc.
C5, H7 etc.
IndicationError
Error
code
w1
Outdoor controller circuit board
ContentsInspection method
LED1 (Green) LED2 (Red)
1 blinking 2 blinking
2 blinking 1 blinking
2 blinking
3 blinking
4 blinking
5 blinking
Connector(63L) is open.
Connector(63H) is open.
2 connectors are open.
Startup time over
Error code is not defined.
Mis-wiring of indoor/outdoor unit connecting wire, excessive number of indoor
units (5 units or more)
Mis-wiring of indoor/outdoor unit connecting wire (converse wiring or disconnection)
Indoor/outdoor unit communication error
(signal receiving error) is detected by indoor unit.
Indoor/outdoor unit communication error
(transmitting error) is detected by indoor
unit.
Indoor/outdoor unit communication error
(signal receiving error) is detected by
outdoor unit.
Indoor/outdoor unit communication error
(transmitting error) is detected by outdoor
unit.
Remote controller signal receiving
error is detected by remote controller.
Remote controller transmitting error
is detected by remote controller.
Remote controller signal receiving
error is detected by indoor unit.
Remote controller transmitting error
is detected by indoor unit.
Serial communication error
<Communication between outdoor
controller board and outdoor power
board>
<Communication between outdoor
controller board and M-NET p.c. board>
Communication error of high prior
signal(M-NET)
W1.Remote controller displays error code.
W2.Refer to service manual for indoor unit.
1
Check if indoor/outdoor connecting wire is connected correctly.
2
Check if 5 or more indoor units are connected to outdoor unit.
3Check if noise entered into indoor/outdoor connecting wire
or power supply.
4Re-check error by turning off power, and on again.
1
Check if connector (63L or 63H) on the outdoor controller
board is not disconnected.
2
Check continuity of pressure switch (63L or 63H) by tester.
1
Check if connector (CN4) on outdoor controller circuit board
and outdoor power circuit board is not disconnected.
2
Check if there is poor connection of connector on outdoor
controller circuit board(CNMNT and CNVMNT).
3
Check M-NET communication signal.
1Check if remote controller is MA remote controller(PAR-20MAA).
2Check if noise entered into transmission wire of remote controller.
3Check if noise entered into indoor/outdoor connecting wire.
4Re-check error by turning off power, and on again.
1Check if connecting wire of indoor unit or remote controller
is connected correctly.
2Check if noise entered into transmission wire of remote
controller.
3Re-check error by turning off power, and on again.
1
Check if indoor/outdoor connecting wire is connected correctly.
2
Check if noise entered into indoor/outdoor connecting wire or
power supply.
3
Check if noise entered into indoor/outdoor controller circuit
board.
4
Re-check error by turning off power, and on again.
P.32
P.32
P.32
P.33
P.33
P.33
w2
w2
P.37
P.37
P.37
P.37
w2
w2
P.37
P.37
P.38~
P.41
Detailed
reference
page
The blinking patterns of both LED1(green) and LED2(red) indicate the types of abnormality when it occurs. Types of
abnormality can be indicated in details by connecting an optional part ‘A-Control Service Tool (PAC-SK52ST)’ to connector
CNM on outdoor controller circuit board.
55
Page 56
OperationLED1 (Red)
Lighted
Normal (Stop)
Normal (Operating)
Fan stops.
Controller board is outputting waveform for fan driving.
Contents
Operation
LED1 (Red)
Importance
2 blinks1
26 blinks
Abnormal
is detected
Abnormality of bus voltage: Abnormal if voltage is less than 200V or more than 760V.
Abnormality of overcurrent: Abnormal if current value of DC bus in over the cut-off point.
Meaning of error code and detection method
Remark
This LED is not
used for service.
U2
U1
UF
UP
UH
U6
U3
U4
U5
U9
P1
P2
P9
P4
P5
P6
P8
IndicationError
Error
code
w1
Outdoor controller circuit board
ContentsInspection method
LED1 (Green)
LED2 (Red)
3 blinking 1 blinking
2 blinking
W1 Error code displayed on remote controller
W2 Refer to service manual for indoor unit.
4 blinking
5 blinking
6 blinking
7 blinking
1 blinking
2 blinking
3 blinking
4 blinking
4 blinking
Abnormality of shell thermostat
and discharging temperature (TH4)
1Check if stop valves are open.
2Check if connectors (TH4, LEV-A) on outdoor controller circuit board are not
disconnected.
3Check if unit fills with specified amount of refrigerant.
4Measure resistance values among terminals on indoor valve and outdoor linear
expansion valve using a tester.
Abnormal high pressure (High
pressure switch 63H worked.)
1Check if indoor/outdoor units have a short cycle on their air ducts.
2Check if connector (63H) on outdoor controller circuit board is not disconnected.
3Check if heat exchanger and filter is not dirty.
4Measure resistance values among terminals on linear expansion valve using a
tester.
1Check if stop valves are open.
2Check looseness, disconnection, and converse connection of compressor wiring.
3Measure resistance values among terminals on compressor using a tester.
4Check if outdoor unit has a short cycle on its air duct.
Compressor over current breaking (Start-up locked)
Compressor over current breaking
Abnormality of current sensor (P.B.)
Abnormality of power module
Open/short of discharge thermistor (TH4)
Open/short of outdoor thermistor (TH8)
Open/short of outdoor thermistors
(TH3, TH32, TH6, TH7 and TH8)
1
Check if connectors (TH3, TH32, TH4, TH6 and TH7) on outdoor controller circuit board
and connector (CN3) on outdoor power circuit board are not disconnected.
2
Measure resistance value of outdoor thermistors.
Abnormality of heat sink
temperature
1Check if indoor/outdoor units have a short cycle on their air ducts.
2Measure resistance value of outdoor thermistor(TH8).
Abnormality of voltage1Check looseness, disconnection, and converse connection of compressor wiring.
2Measure resistance value among terminals on compressor using a tester.
3Check if power supply voltage decreases.
4Check CN5 wiring on the outdoor power circuit board or noise filter circuit board.
Abnormality of room temperature thermistor (TH1)
Abnormality of pipe temperature thermistor /Liquid (TH2)
Abnormality of pipe temperature
thermistor/Condenser-Evaporator
1Check if connectors (CN20, CN21 and CN29) on indoor controller circuit board
are not disconnected.
2Measure resistance value of indoor thermistors.
Abnormality of drain sensor (DS)
Indoor drain overflow protection
1Check if connector (CN31) on indoor controller circuit board is not disconnected.
2Measure resistance value of indoor thermistors.
3Measure resistance value among terminals on drain-up machine using a tester.
4Check if drain-up machine works.
5Check drain function.
1Check if indoor unit has a short cycle on its air duct.
2Check if heat exchanger and filter is not dirty.
3Measure resistance value on indoor and outdoor fan motors.
4Check if the inside of refrigerant piping is not clogged.
Abnormality of pipe
temperature
1Check if indoor thermistors (TH2 and TH5) are not disconnected from holder.
2Check if stop valve is open.
3Check converse connection of extension pipe. (on plural units connection)
4Check if indoor/outdoor connecting wire is connected correctly. (on plural units
connection)
P.34
P.34
P.36
P.36
P.36
P.35
P.35
P.35
P.35
P.36
W2
W2
W2
W2
W2
W2
Detailed
reference
page
LED indications of fan operating condition (LED1 on outdoor Fan controller circuit board)
56
Page 57
<Outdoor unit operation monitor function>
1ON23456
1ON23456
1 second
interval
DisplayOperation Model
The tens digit : Operation mode
The ones digit : Relay output
O
C
H
d
Display
0
1
2
3
4
5
6
7
8
A
Compressor
Warming-up
Compressor
4-way valve
Solenoid valve
—
—
—
—
ON
ON
ON
ON
—
—
—
—
—
—
—
—
—
—
ON
ON
—
—
ON
ON
—
—
ON
ON
—
ON
—
ON
—
ON
—
ON
—
ON
—
—
OFF / FAN
COOLING / DRY w
HEATING
DEFROSTING
Display
Contents to be inspected (When power is turned on)
F3
F5
F9
E8
E9
EA
Eb
Ec
E0~E7
63L connector(red) is open.
63H connector(yellow) is open.
2 connectors (63H/63L) are open.
Indoor/outdoor communication error (Signal receiving error) (Outdoor unit)
Indoor/outdoor communication error (Transmitting error) (Outdoor unit)
Mis-wiring of indoor/outdoor unit connecting wire, excessive number of indoor units (5 units or more)
Mis-wiring of indoor/outdoor unit connecting wire(converse wiring or disconnection)
Startup time over
Communication error except for outdoor unit
Display
Inspection unit
0
1
2
3
4
Outdoor unit
Indoor unit 1
Indoor unit 2
Indoor unit 3
Indoor unit 4
Display
Contents to be inspected (During operation)
U1
U2
U3
U4
U5
U6
U7
UF
UH
UL
UP
P1~P8
A0~A7
Abnormal high pressure (63H worked)
Abnormal high discharging temperature, shortage of refrigerant
Open/short circuit of discharging thermistor(TH4)
Open/short of outdoor unit thermistors(TH3, TH32, TH6, TH7 and TH8)
[When option part ‘A-Control Service Tool(PAC-SK52ST)’ is connected to outdoor controller circuit board(CNM)]
Digital indicator LED1 displays 2 digit number or code to inform operation condition and the meaning of error code by controlling DIP SW2 on ‘A-Control Service Tool’.
Operation indicator SW2 : Indicator change of self diagnosis
SW2 setting
Display detail
Explanation for displayUnit
<Digital indicator LED1 working details>
(Be sure the 1 to 6 in the SW2 are set to OFF.)
(1) Display when the power supply ON.
When the power supply ON, blinking displays by turns.
Wait for 4 minutes at the longest.
(2) When the display lights. (Normal operation)
1Operation mode display.
(Lighting)
LED1
2Display during error postponement
Postponement code is displayed when
compressor stops due to the work of
protection device.
Postponement code is displayed while
error is being postponed.
(3) When the display blinks
Inspection code is displayed when compressor stops due to the work of protection devices.
SW2
(Initial setting)
57
Page 58
SW2 setting
1ON23456
1ON23456
1ON23456
1ON23456
1ON23456
1ON23456
1ON23456
1ON23456
1ON23456
10
1ON23456
1
05
4
25
2
45
1
25
1
50
1ON23456
Display detail
Pipe temperature / Liquid(TH3)
– 40~90
Explanation for displayUnit
– 40~90
(When the coil thermistor detects 0: or below, “–”
and temperature are displayed by turns.)
(Example)
When –10:; 0.5 secs. 0.5 secs. 2 secs.
:
Discharge temperature (TH4)
3~217
Output step of outdoor FAN
0~10
The number of ON / OFF times of
compressor
0~9999
Compressor integrating operation times
0~9999
Compressor operating current.
0~50
3~217
(When the discharge thermistor detects 100: or
more, hundreds digit, tens digit and ones digit are
displayed by turns.)
(Example)
When 105:; 0.5 secs. 0.5 secs. 2 secs.
0~10
0~9999
(When the number of times is 100 or more,
hundreds digit, tens digit and ones digit are
displayed by turns.)
(Example) When 42500 times (425 ✕100 times);
0.5 secs. 0.5 secs. 2 secs.
0~9999
(When it is 100 hours or more, hundreds digit, tens
digit and ones digit are displayed by turns.)
(Example) When 2450 hours (245 ✕10 hours);
0.5 secs. 0.5 secs. 2 secs.
0~50
wOmit the figures after the decimal fractions.
:
Step
100 times
10 hours
A
Compressor operating frequency
0~225
0~255
(When it is 100Hz or more, hundreds digit, tens
digit and ones digit are displayed by turns.
(Example)
When 125Hz; 0.5 secs. 0.5 secs. 2 secs.
LEV-Aopening pulse
0~480
0~480
(When it is 100 pulse or more, hundreds digit, tens
digit and ones digit are displayed by turns.
(Example)
When 150 pulse; 0.5 secs. 0.5 secs. 2 secs.
Error postponement code history (1)
of outdoor unit
Postponement code display
Blinking: During postponement
Lighting: Cancellation of postponement
“00” is displayed in case of no postponement.
Operation mode on error occurringOperation mode of when operation stops due to
error is displayed by setting SW2 like below.
(SW2)
58
Hz
Pulse
Code
display
Code
display
Page 59
SW2 setting
1ON23456
1ON23456
1ON23456
1ON23456
1ON23456
1ON23456
15
1302
45
1
05
Display detail
Pipe temperature / Liquid(TH3) on error
occurring
– 40~90
Explanation for displayUnit
– 40~90
(When the coil thermistor detects 0: or below, “–”
and temperature are displayed by turns.)
(Example)
When –15:; 0.5 secs. 0.5 secs. 2 secs.
:
Compressor temperature (TH4) or
discharge temperature (TH4) on error
occurring
3~217
Compressor operating current on error
occurring
0~20
Error code history (1) (latest)
Alternate display of abnormal unit
number and code
Error code history (2)
Alternate display of error unit number
and code
3~217
(When the temperature is 100: or more, the
hundreds digit, tens digit and ones digit are
displayed by turns.)
(Example)
When 130:; 0.5 secs. 0.5 secs. 2 secs.
0~20
When no error history,
“ 0 ” and “– –” are displayed by turns.
When no error history,
“ 0 ” and “– –” are displayed by turns.
:
A
Code
display
Code
display
Thermostat ON time
0~999
Test run elapsed time
0~120
0~999
(When it is 100 minutes or more, the hundreds digit,
tens digit and ones digit are displayed by turns.)
(Example)
When 245 minutes; 0.5 secs. 0.5 secs. 2 secs.
0~120
(When it is 100 minutes or more, the hundreds digit,
tens digit and ones digit are displayed by turns.)
(Example)
When 105 minutes; 0.5 secs. 0.5 secs. 2 secs.
59
Minute
Minute
Page 60
SW2 setting
1ON23456
1ON23456
1ON23456
1ON23456
1ON23456
Capacity
RP8Y
RP10Y
40
50
Code
Setting details
• The tens digit (Total display for applied setting)
• The ones digit
H·P /
Cooling only
Single phase / Three phase
Display details
0 : H·P 1 : Cooling only
0 :
Single phase
2 :
Three phase
Setting details
Defrosting switch
Display details
0 : Normal 1 : For high humidity
1ON23456
1ON23456
1ON23456
Display detail
The number of connected indoor units
Explanation for display
0~4
(The number of connected indoor units are displayed.)
Unit
Unit
Capacity setting display
Outdoor unit setting information
Indoor pipe temperature / Liquid
(TH2(1))
Indoor 1
– 39~88
Displayed as an outdoor capacity code.
(Example) When heat pump,three phase and
defrosting (normal) are set up, “20” is
displayed.
– 39~88
(When the temperature is 0: or less, “–” and
Preventive control for excessive temperature rise of discharge temperature
Preventive control for excessive temperature rise of condensing temperature
Frosting preventing control
Preventive control for excessive temperature rise of radiator panel
(Example)
The following controls are activated.
• Primary current control
• Preventive control for excessive tempe-
rature rise of condensing temperature
• Preventive control for excessive tempe rature rise of radiator panel
1a
LED
10
1ON23456
1ON23456
1ON23456
1ON23456
Display detail
Controlling status of compressor
operating frequency
Explanation for displayUnit
The following code will be a help to know the
operating status of unit.
Code
display
Liquid pipe temperature (TH32)
– 40~90
Indoor pipe temperature / Liquid
(TH2(4))
Indoor 4
– 39~88
Indoor pipe temperature / (Cond./Eva.)
(TH5(4))
Indoor 4
– 39~88
Indication for performing status of unit
replacement operation
•The ones digit
Every time the unit replacement operation is performed by using SW8-2 for
2 hours, the number "1" is displayed.
However, the operation less than 2
hours is not counted, and the number
"0" is displayed.
•The tens digit
When specified time of unit replacement operation has been performed
by using outdoor unit, the number "1"
is displayed. (The number gets back to
"0" when performing replacement
operation by using SW8-2.)
– 40~90
(When the temperature is 0°C or less, “–” and
temperature are displayed by turns.)
(Example)
When –10°C; 0.5 secs. 0.5 secs. 2 secs.
– 39~88
(When the temperature is 0°C or less, “–” and
temperature are displayed by turns.)
– 39~88
(When the temperature is 0°C or less, “–” and
temperature are displayed by turns.)
•The ones digit
1: Performed
0: Not performed
•The tens digit
1: Specified time of replacement operation
Energy saving air
flow (Heating mode)
Direct add-on type
humidifier (Only for
power-cassette)
Swing
Set temperature in
heating mode 4deg-up
Fan speed when the
heating thermostat is OFF
Quiet operation mode of
power cassette
Fan speed when the
cooling thermostat is OFF
Detection of abnormality
of the pipe temperature (P8)
100Hr
2500Hr
No filter sign indicator
standard
High ceiling 1
High ceiling 2
4 directions
3 directions
2 directions
Not supported
Supported
No vanes
Equipped with vane (No.1 setting)
Equipped with vane (No.2 setting)
Disabled
Enabled
Not supported
Supported
Not available
Available
Available
Not available
Extra low
Low (4-speed model) Low (2-speed model)
Set fan speed
Normal
Quiet
Set fan speed
Stop
Available
Not available
1
2
3
1
2
3
1
2
3
1
2
1
2
3
1
2
1
2
1
2
1
2
1
2
3
1
2
1
2
1
2
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
07
08
09
10
11
12
13
23
24
25
26
27
28
4-way Cassette
PLA-AA
(powercassette)
PLA-AA.UK
(powercassette)
Ceiling concealed
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Initial setting(when sent from the factory)
–: Not available
PEAD-EA
PEAD-GA
PEH-MYA
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Ceiling
Concealed
Ceiling
Concealed
Wall Mounted
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
PKA-FAL PKA-GAL
—
—
—
—
—
—
—
Ceiling
Suspended
PCA-GA
Function
Settings
Mode No.
Setting No.
Initial setting
(when sent from the factory)
Remarks
Power failure
automatic recovery
Indoor temperature
detecting
LOSSNAY
connectivity
Power supply
voltage
Auto operating
mode
Frost prevention
temperature
Humidifier control
Change of
defrosting control
OFF
ON
Operating indoor units
(The average is considered as indoor temperature.)
Indoor unit with remote controller
Remote controller's internal sensor
Not supported
Supported (indoor unit not equipped with outdoor air intake)
Supported (indoor unit equipped with outdoor air intake)
240V
220V,230V
Auto energy-saving operation ON
Auto energy-saving operation OFF
2: (Normal)
3:
When the compressor operates, the humidifier also operates.
When the fan operates, the humidifier also operates.
Standard
For high humidity
1
2
1
2
3
1
2
3
1
2
1
2
1
2
1
2
1
2
01
02
03
04
05
15
16
17
The setting is
applied to all
the units in the
same
refrigerant
system.
13-11. SELECTING FUNCTIONS USING THE REMOTE CONTROLLER
Each function can be set according to necessity using the remote controller. The setting of function for each unit can only be
done by the remote controller. Select function available from the table 1.
<Table 1> Function selections
(1) Functions available when setting the unit number to 00 (Select 00 referring to 4 setting the indoor unit number on 13-11-1.)
W1 The functions below are available only when the wired remote controller is used.The functions are not available for floor
standing models.
(2) Functions available when setting the unit number to 01-03 or AL (07 in case of wireless remote controller)
• When setting functions for an indoor unit in an independent system, set the unit number to 01 referring to 4 setting the
indoor unit number on 13-11-1.
• When setting functions for a simultaneous- Twin Triple indoor unit system, set the unit number to 01 to 03 for each indoor
unit in case of selecting different functions for each unit referring to 4 setting the indoor unit number on 13-11-1.
• When setting the same functions for an entire simultaneous Twin Triple-indoor unit system, set refrigerant address to AL
(07 in case of wireless remote controller) referring to 4 setting the indoor unit number on 13-11-1.
66
Page 67
13-11-1. Selecting functions using the wired remote controller
PAR-20MAA
ON/OFF
CENTRALLY CONTROLLED
ERROR CODE
CLOCK
ON OFF
˚C
CHECK
CHECK MODE
FILTER
TEST RUN
FUNCTION
˚C
1Hr.
NOT AVAILABLE
STAND BY
DEFROST
FILTER
CHECK TEST
TEMP.
TIMER SET
F
E
G
CD
A
J
B
123
4
[Flow of function selection procedure]
The flow of function selection procedure is shown below. The flow is described in case of setting indoor temperature detecting
shown in table 1 on the preceding page. Refer to procedure 1 to 0 when actually setting functions.
Selecting functions using the wired remote controller
1 Check the function selection setting.
2 Switch to function setting mode. w
(Press A and B at the same time
with the remote controller stopped.)
w For modes 15 and higher,
press J and B at the same
time.
3 Specify refrigerant address "00" (outdoor unit)
(This operation is not necessary for single
refrigerant system.)
4 Specify unit No. "00". (indoor unit)
1 Mode number
2 Setting number
3 Refrigerant address
4 Unit number
YES
9
For mode 01 to 13, press Aand B at the same time
and for mode 15 to 28, press B and J to go to function
select mode.
[Operating instructions]
11
Checking the function settings
If you change the setting in the function setting procedure, the contents of setting will be changed for the designated mode.
Change the setting after recording all the previous setting into the checklist of table 1 by following steps 2 to 7. In addition,
read the installation manual packed with indoor units to be informed of initial setting.
22
Turning off the remote controller
Press the
A FILTER and B TEST RUN buttons simultaneous-
ly and hold them for at least 2 seconds.
(For modes 15 and higher, press J and B simultaneously for
33
Setting the refrigerant address No. of outdoor unit
Press CTIMER SET button to select the refrigerant
address from No.00 to No.15. (Set the refrigerant address to
No.00 in case of single refrigerant grouping system.)
at least 2 seconds.) FUNCTION will start to flash. After a
while, the refrigerant address display will start to flash .
3
FUNCTION
FUNCTION
W If the unit stops two seconds after the FUNCTION display starts to flash or [88] starts to flash in the room temperature display, a transmission problem may have occurred. Check to see if there are some sources of transmission interference (noise)
nearby.
If you make a mistake during any points of this procedure, you can quit the function setting by pressing 0
then return to step 2.
67
Page 68
44
FUNCTION
1
(a)
(c)
(h)
(g)
(b)
(f)
(d)(e)
3 00 refrigerant address
FUNCTION
1
FUNCTION
FUNCTION
2
2
Setting the indoor unit number
Press D(CLOCK ON OFF) and [--] will start to flash in the unit
number display (4) .
4
Press C(TIMER SET) button to select the unit
number from 00, 01, 02, 03, 04, and AL.
FUNCTION
•Set the unit number to 00 if the mode such as power failure automatic recovery, indoor temperature detecting or
LOSSNAY connectivity is desired to be selected.
•Select the unit number from 01 to 04 if the function setting is desired to be done for each of them individually.
•Set the unit number to AL if the function setting is desired to be done for all of units simultaneously.
55
Confirming the refrigerant address and indoor unit number
Press E MODE button to confirm the refrigerant address and
unit number.
After a while, [--] will flash in the mode number display (I).
WIf [88] appears in the room temperature display section, the
selected refrigerant address does not exist in the system.
Also, if [F] appears in the unit number display section, the
selected unit number does not exist. Enter the correct refrig-
erant address and unit number at steps 2 and 3.
FUNCTION
Designated indoor unit starts fan draft operation by pressingE
MODE button. Check which indoor unit is designated for function setting by doing this. In addition, all the units of the
selected refrigerant address start fan draft operation if the unit
number is set to 00 or AL.
Example) When the refrigerant address is set to 00 and the
unit number is 02;
(a) Outdoor unit
(b) Indoor unit
(c) Unit number 01
(d) Unit number 02
(e) Unit number 03
(f) Fan draft
(g) Designation
(h) Remote controller
WIf any undesignated indoor units start fan draft operation
under multiple refrigerant grouping system, refrigerant
addresses may be overlapped. Reassign refrigerant addresses at the DIP switch of the outdoor unit.
66
Selecting the mode number
Press F(TEMP) buttons to set the desired mode number. (It is possible to set the number of available mode only.)
77
Selecting the setting of designated mode
Press G button, and the setting number will start to flash.
Press F(TEMP) button to select the setting number.
Check the current status of the setting by doing this.
68
Page 69
88
Registering the settings from steps 33to 77into memory
The mode and setting numbers (1)(2) will start to flash when the MODE button E is pressed and registration will begin. The
numbers are set when the flashing stays lit.
FUNCTION
21
21
FUNCTION
WIf [---] appears in the room temperature display as the mode/setting number, or if a flashing [88] display appears, a transmission problem may have occurred. Check to see if there are some sources of transmission interference (noise) nearby.
99
Registering other settings simultaneously
Repeat steps 3 to 8 to make other function settings.
00
Completing the function settings
Press A FILTER and B TEST RUN buttons simultaneously for at least two seconds. (For modes 15 and higher, press J andB simultaneously for at least 2 seconds.) After a while, the function selection screen will disappear and air conditioner OFF
display will appear.
WDo not use the remote controller for 30 seconds after completing the function
setting. (Any requests will be rejected.)
FUNCTION
69
Page 70
ON/OFF
TEMP
FAN
VANE
MODE
CHECK
LOUVER
TEST RUN
AUTO STOP
AUTO START
h
min
CHECK
RESET
SET
CLOCK
h
CHECK
min
h
The flow of the function selection procedure is shown below. This example shows how to turn
off the function that raises the set temperature by 4 degrees during HEAT operation .
The procedure is given after the flow chart.
1 Check the function selection setting.
2 Switch to function selection mode.
(Enter address "50" in troubleshooting
mode, then press the HOUR button.)
Troubleshooting mode is the mode entered when
you press the INSPECT button twice to display
"INSPECT".
3 Specify unit No. "01" (since the function applies to unit 01).
(Set address "01" while still in troubleshooting mode, then press the MINUTE button.)
Note: You can't specify the refrigerant address.
4
Select mode No. "24" (function that raises set temperature by 4 degrees during HEAT operation).
(Set address "24" while still in troubleshooting mode, then press the HOUR button.)
6
Finished
8 End function selection mode.
(End troubleshooting mode.)
YES
NO
Note: When you switch to function selection mode
on the wireless remote controller's operation
area, the unit ends function selection mode
automatically if nothing is input for 10 minutes
or longer.
5 Select setting No. "02" (OFF).
(Set address "02" while still in troubleshooting mode, then press the HOUR button.)
Change
unit No.
YES
NO
7
13-11-2. Selecting functions using the wireless remote controller (Type C)
h
min
Functions can be selected with the wireless remote controller. Function selection using wireless remote controller is available only for refrigerant system with wireless function. Refrigerant address cannot be specified by the wireless remote controller.
[Flow of function selection procedure]
[Operating instructions]
1 Check the function settings.
2 Press the button twice continuously. → CHECK is lit and “00” blinks.
Press the temp button once to set “50”. Direct the wireless remote controller toward the receiver of the indoor unit and press
the button.
3 Set the unit number.
Press the temp button to set the unit number. (Press “01” to specify the indoor unit whose unit number is 01.)
Direct the wireless remote controller toward the receiver of the indoor unit and press the button.
By setting unit number with the button, specified indoor unit starts performing fan operation.
Detect which unit is assigned to which number using this function. If unit number is set to AL, all the indoor units in same
refrigerant system start performing fan operation simultaneously.
* If a unit number that cannot be recognized by the unit is entered, 3 beeps of 0.4 seconds will be heard. Reenter the unit number
setting.
* If the signal was not received by the sensor, you will not hear a beep or a “double beep” may be heard. Reenter the unit number
setting.
4 Select a mode.
Press the temp button to set a mode. Press “24” to turn on the function that raises the set temperature by 4 degree
during heat operation. Direct the wireless remote controller toward the sensor of the indoor unit and press the button.
→ The sensor-operation indicator will flash and beeps will be heard to indicate the current setting number.
Current setting number: 1 = 1 beep (one second)
2 = 2 beeps (one second each)
* If a mode number that cannot be recognized by the unit is entered, 3 beeps of 0.4 seconds will be heard. Reenter the mode
number.
* If the signal was not received by the sensor, you will not hear a beep or a “double beep” may be heard. Reenter the mode
number.
5 Select the setting number.
Press the temp button to select the setting number. (02: Not available)
Direct the wireless remote controller toward the receiver of the indoor unit and press the button.
→ The sensor-operation indicator will flash and beeps will be heard to indicate the the setting number.
Setting number: 1 = 2 beeps (0.4 seconds each)
* If a setting number that cannot be recognized by the unit is entered, the setting will turn back to the original setting.
6 Repeat steps 4 and 5 to make an additional setting without changing unit number.
7 Repeat steps 3 to 5 to change unit number and make function settings on it.
8 Complete the function settings
* Do not use the wireless remote controller for 30 seconds after completing the function setting.
* If the signal was not received by the sensor, you will not hear a beep or a “double beep” may be heard. Reenter the setting number.
• Electrical parts box by sliding it towards you (see photo6).
Photo 6
Outdoor
Controller
circuit
board
Electrical
parts box
Terminal
block (TB1)
Electrical parts box
fixing screw
Compressor
Electrical
parts box
pedestal
Terminal
block
(TB2)
Terminal cover
Screw tightening
torque
1.7~2.1N
Cover
panel
fixing
screw
Cover panel
•m
6. Removing the thermistor <Outdoor 2-phase pipe> (TH6)
and thermistor <Outdoor> (TH7)
w TH6 and TH7 are replaced together, since they are combined
together at the connector to the controller circuit board.
(1) Remove the service panel and the front panel.
(2) Disconnect the connector TH6/7 (4P, red) from the controller
circuit board.
(3) Loosen all the clamps for the lead wire and cut 2 fasteners
(see photo 7).
(4) Pull out
• Thermistor <Outdoor 2-phase pipe> (TH6) from the sensor
holder mounted on the heat exchanger.
• Thermistor <Outdoor pipe> (TH7) from the sensor holder
(see photo 7).
7. Removing the thermistor <Outdoor pipe>
(1) Remove the service panel and the front panel.
(2) Disconnect the connector TH3 (3P, white) or TH32 (3P, black)
from the controller circuit board.
(3) Loosen all the clamps for the lead wire and cut 2 fasteners
(see photo 7).
(4) Pull out the thermistor (TH3 or TH32) from the sensor holder
mounted on the heat exchanger (see photo 7).
w When there is difficulty in pulling out TH3 from the heat
exchanger, open the side panel (right) by removing 2 side
panel fixing screws (5o10).
Photo 7
Thermistor
<Outdoor pipe>
(TH32)
Clamp
Clamp
Thermistor
<Outdoor>
(TH7)
Clamp
Thermistor
<Outdoor 2phase pipe>
(TH6)
Fan motor
lead wire
penetration
part
Thermistor
<Outdoor pipe>
(TH3)
Fastener
73
Page 74
OPERATING PROCEDUREPHOTOS
8. Removing the thermistor <Discharge>
(1) Remove the service panel.
(2) Disconnect the connector TH4 (3P, white) from the controller
circuit board.
(3) Loosen all the clamps for the lead wire (see photo 7).
(4) Pull out the thermistor (TH4) from the sensor holder mounted
on the compressor discharging pipe (see photo 8).
9. Removing the 4-way solenoid valve coil, the linear
expansion valve coil, and the bypass solenoid valve coil
(1) Remove the service panel.
<4-way solenoid valve coil>
(2) Disconnect the connector 21S4 (3P, green) from the controller
circuit board.
(3) Loosen all the clamps for the lead wire and cut 2 fasteners
(see photo 7).
(4) Remove the 4-way solenoid valve coil fixing screw (M4o6)
(see photo 9).
(5) Remove the 4-way solenoid valve coil by sliding it towards
you (see photo 8, 9).
<Bypass solenoid valve coil>
(2) Disconnect the connector SV2 (3P, blue) from the controller
circuit board.
(3) Loosen all the clamps for the lead wire and cut 2 fasteners
(see photo 7).
(4) Remove the bypass solenoid valve coil fixing screw (M4o6)
(see photo 9).
(5) Remove the bypass solenoid valve coil by sliding it upward.
<Linear expansion valve coil>
2. Disconnect the connector LEV-A(6P, white) from the controller
circuit board.
3. Loosen all the clamps for the lead wire and cut 2 fasteners
(see photo 7).
4. Remove the linear expansion valve coil by sliding it upward
(see photo 9).
Photo 8
Photo 9
Linear expansion valve
Bypass solenoid
valve
4-way solenoid
valve coil
<Side panel (right) is removed>
Linear expansion valve coil
Thermistor
<Discharge>
(TH4)
4-way solenoid
valve
Bypass
solenoid
valve coil
fixing screw
Bypass
solenoid
valve coil
Note) When attaching the coil, make sure to tie the lead wires
with the fasteners that are equivalent to the ones you
just cut.
Valve bed
support
Valve bed
support
fixing screw
74
4-way solenoid valve
coil fixing
screw
4-way
solenoid
valve coil
4-way solenoid valve
Page 75
OPERATING PROCEDUREPHOTOS
10. Removing the 4-way solenoid valve
(1) Remove
• Service panel.
• 3 cover panel fixing screws (5o10).
• Cover panel (see photo 6).
• 4-way solenoid valve coil (see photo 8, 9).
• 2 valve bed support fixing screws (5o10), then valve
bedsupport (see photo 9).
(3) Disconnect the lead wire for the low pressure switch or the
high pressure switch (see photo 12).
(4) Collect the refrigerant
(5) Remove the low pressure switch or the high pressure switch
from the welded part.
Note 1: Collect the refrigerant without releasing it in the air.
Note 2: The welded points can be accessed easily by
removing the right side panel.
Note 3: When installing the low / high pressure switch,
cover it with a wet cloth to prevent it from
heating (100;;or more), then braze the pipe
(non-oxidizing braze).
Photo 12
Lead wire for the
high pressure
switch
High pressure
switch
Low pressure
switch
Lead wire for
the low
pressure
switch
76
Page 77
OPERATING PROCEDURE
PHOTOS & ILLUSTRATION
14. Removing the reactor
(1) Remove
• Service panel
• 2 screws (4o8) that hold the terminal block fixing metal plate
in front of the electrical parts box, then slightly pull the plate
towards you.
• 4 screws (4o8) that hold the controller circuit board fixing
metal plate in front of the electrical parts box, then tilt the
plate towards you (see photo 6).
• 3 reactor fixing screws (4o8).
• Remove the reactor by sliding it upward (see photo 14).
Photo 13
screws
Photo 14
screws
screws
screws
15. Removing the compressor
(1) Remove
• Service panel (see photo 2).
• 3 cover panel fixing screws (5o10).
• Cover panel (see photo 6).
• 2 valve bed support fixing screws (5o10), then valve bed
support (see photo 9).
• 3 lead wire fixing screws (M5o10), then disconnect the lead
wire (see photo 15).
(2) Collect the refrigerant.
(3) Remove the sound insulation.
(4) Disengage the welded points of the compressor inlet and dis
charge pipes.
(5) Remove 3 compressor fixing nuts by using a spanner or a
monkey wrench.
Note: Collect the refrigerant without releasing it in the air.
77
photo 15
Valve bed
support
Terminal
Compressor
Compressor
fixing nut
(3pcs)
Reactor
Valve bed
fixing
screw
Valve bed
Valve bed fixing
screw
Page 78
OPERATING PROCEDUREPHOTOS
16. Removing the accumulator
(1) Remove
• Service panel (see photo 1).
• Electrical parts box (see photo 6).
• 2 electrical parts box leg fixing screws (5o10), then electrical
parts box legs (see photo 6).
• 2 lower fixing screws (5o10) of the heat sink duct.
• 2 screws (4o10) which hold the metal plate above the heat
sink, then remove the plate.
• Fan guard.
• 3 upper fixing screws (5o10) of the heat sink duct located
below the fan motor, then remove the hear sink duct (see
photo 15).
(2) Collect the refrigerant.
(3) Disengage 2 welded points of the accumulator inlet and outlet
(see photo 17).
(4) Remove 4 accumulator fixing screws (5o10), then take out the
accumulator.
Note 1: Collect the refrigerant without releasing in the air.
Note 2: The welded points can be accessed easily by remov-
ing the rear panel. When servicing from the rear side,
remove the rear panel first, then follow the procedure
from number 2 (collecting the refrigerant) mentioned
above (see photo 16).
Photo 16
Fan motor
Upper heat sink duct fixing screw (3pcs)
Photo 17
Accumulator
<Viewed from rear side>
Accumulator
fixing screw
(4pcs)
78
Page 79
15PARTS LIST
PUHZ
1
1
2
2
1
1
1
1
2
2
1
1
MOTOR CAP
NUT M16
SUPPORT
MOTOR SUPPORT
FAN MOTOR
PROPELLER
R01 E01 122
R01 E05 097
—
R01 E20 130
T7W E26 763
R01 E03 115
1
2
3
4
5
6
RP8RP10
YHA
Part No.Specification
No.
Wining
Diagram
Symbol
Recommended
Q,ty
Price
Unit
Amount
Part Name
Q,ty/set
Remarks
(Drawing No.)
BG02U187H03
MF
FAN PARTS
PUHZ-RP8YHA
PUHZ-RP10YHA
2
1
6
5
3
4
79
Page 80
STRUCTURAL PARTS
PUHZ-RP8YHA
PUHZ-RP10YHA
2
1
26
24
25
3
6
12
7
8
4
9
10
23
22
18
17
16
15
12
14
13
21
20
19
12
11
5
80
Page 81
No.
Part No.Specification
R01 E01 675
1
R01 E05 662
2
R01 E06 668
3
R01 E05 667
4
R01 E06 658
5
6
R01 H75 202
7
8
9
10
R01 E00 808
11
12
13
14
15
R01 E74 202
16
R01 H76 202
17
18
R01 E10 661
19
R01 E07 667
20
R01 E03 698
21
R01 E66 408
22
23
24
R01 E39 409
25
26
27
28
29
30
31
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Part Name
FAN GUARD
SIDE PANEL (L)
FRONT PANEL
SERVICE PANEL
COVER PANEL
SEPARATOR
THERMISTOR (OUTDOOR PIPE)
HEAT SINK DUCT
BASE
VALVE BED SUPPORT
LEG
SUPPORT
VALVE BED
SEPARATOR SUPPORT
DRAIN DUCT
THERMISTOR (OUTDOOR PIPE)
THERMISTOR (OUTDOOR)
HEAT EXCHANGER JOINT
SIDE PANEL (R)
REAR PANEL
REAR GUARD
HEAT EXCHANGER (1)
COIL PLATE (1)
COIL PLATE (2)
HEAT EXCHANGER (2)
TOP FRAME
LABEL (MITSUBISHI)
LABEL (INVERTER)
ELECTRICAL PARTS BOX PEDESTAL
SENSOR HOLDER
SEPARATOR CAP
CONTROLLER CIRCUIT BOARD
CIRCUIT BOARD SUPPORT PLATE
FUSE
FUSE
FUSE HOLDER
NOISE FILTER CIRCUIT BOARD
TERMINAL BLOCK (POWER SUPPLY)
TERMINAL BLOCK (INDOOR / OUTDOOR)
REACTOR
RUSH CURRENT PROTECT RESISTOR
POWER CIRCUIT BOARD
ELECTRICAL PARTS BOX RIGHT SIDE PLATE
HEAT SINK
FAN CONTROLLER CIRCUIT BOARD
MAIN SMOOTHING CAPACITOR
ELECTRICAL PARTS BOX
WATERPROOF SHEET FOR THE ELECTRICAL PARTS