Mitsubishi Electric PUZ-HA30NHA5 User manual

SERVICE MANUAL
CONTENTS
1. REFERENCE MANUAL ·································· 2
2. SAFETY PRECAUTION ·································· 2
3. FEATURES ······················································ 6
4. SPECIFICATIONS ··········································· 7
5. DATA································································ 8
6. OUTLINES AND DIMENSIONS ···················· 10
7. WIRING DIAGRAM·········································11
8. WIRING SPECIFICATIONS··························· 12
9. REFRIGERANT SYSTEM DIAGRAM ·············· 16
10. TROUBLESHOOTING··································· 17
11. EASY MAINTENANCE FUNCTION··············· 73
12. FUNCTION SETTING ···································· 75
13. MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER ············ 84
14. DISASSEMBLY PROCEDURE······················ 94
R410A
Notes:
• This manual describes service
data of the outdoor units only.
• RoHS compliant products have
<G> mark on the spec name
plate.
[Model Name]
PUZ-HA30NHA5
PUZ-HA36NHA5
[Service Ref.]
PUZ-HA30NHA5
PUZ-HA36NHA5
PARTS CATALOG (OCB607)
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
No. OCH607
October 2015

2
2SAFETY PRECAUTION
1REFERENCE MANUAL
Before obtaining access to terminal, all supply circuits must be disconnected.
Preparation before the repair service.
• Prepare the proper tools.
• Prepare the proper protectors.
• Provide adequate ventilation.
• After stopping the operation of the air conditioner, turn off the power-supply beaker.
• Discharge the condenser before the work involving the electric parts.
Precautions during the repair service.
• Do not perform the work involving the electric parts with wet hands.
• Do not pour water into the electric parts.
• Do not touch the refrigerant.
• Do not touch the hot or cold areas in the refrigerating cycle.
• When the repair or the inspection of the circuit needs to be done without turning off the power,
exercise great caution not to touch the live parts.
2-1. ALWAYS OBSERVE FOR SAFETY
INDOOR UNIT
Model name Service Ref. Service manual No.
PLA-A18/30/36BA6 PLA-A18/30/36BA6 OCH581/OCB581
PKA-A18HA6 PKA-A18HA6 OCH580/OCB580
PKA-A30/36KA6 PKA-A30/36KA6.TH OCH584/OCB584
PEA-A18AA6 PEA-A18AA6.TH HWE08070
PEAD-A30/36AA5 PEAD-A30/36AA5 HWE14030
PCA-A30/36KA6 PCA-A30/36KA6 OCH585/OCB585
PVA-A30/36AA4 PVA-A30/36AA4 HWE14060
OCH607

3
Cautions for units utilizing refrigerant R410A
2-2. CAUTIONS RELATED TO NEW REFRIGERANT
Use new refrigerant pipes.
Make sure that the inside and outside of refrige-
rant piping is clean and it has no contaminants
such as sulfur, oxides, dirt, shaving particles, etc.
which are hazard to refrigerant cycle.
In addition, use pipes with specified thickness.
Store the piping indoors, and both ends of the
piping sealed until just before brazing.
(Leave elbow joints, etc. in their packaging.)
The refrigerant oil applied to flare and flange
connections must be ester oil, ether oil or
alkylbenzene oil in a small amount.
In case of using the existing pipes for R22, be careful with
the following.
· Be sure to clean the pipes and make sure that the insides
of the pipes are clean.
· 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.
Contamination inside refrigerant piping can cause deterio-
ration of refrigerant oil, etc.
If dirt, dust or moisture enters into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of com-
pressor.
If large amount of mineral oil enters, that can cause deterio-
ration of refrigerant oil, etc.
Do not use refrigerant other than R410A.
If other refrigerant (R22, etc.) is used, chlorine in refrige-
rant 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.
Handle tools with care.
If dirt, dust or moisture enters into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of com-
pressor.
Do not use a charging cylinder.
If a charging cylinder is used, the composition of refrigera-
nt 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
Use the specified refrigerant only.
Never use any refrigerant other than that specified.
Doing so may cause a burst, an explosion, or fire when the
unit is being used, serviced, or disposed of.
Correct refrigerant is specified in the manuals and on the
spec labels provided with our products.
We will not be held responsible for mechanical failure,
system malfunction, unit breakdown or accidents caused
by failure to follow the instructions.
Ventilate the room if refrigerant leaks during
operation. If refrigerant comes into contact with
a flame, poisonous gases will be released.
OCH607

4
Gravimeter
Unit
[3] Service tools
Use the below service tools as exclusive tools for R410A refrigerant.
No. Tool name Specifications
1 Gauge manifold · Only for R410A
· Use the existing fitting specifications.
· Use high-tension side pressure of 5.3MPa·G or over.
2 Charge hose · Only for R410A
· Use pressure performance of 5.09MPa·G or over.
3 Electronic scale
4 Gas leak detector · Use the detector for R134a, R407C or R410A.
5 Adaptor for reverse flow check · Attach on vacuum pump.
6 Refrigerant charge base
7 Refrigerant cylinder · Only for R410A · Top of cylinder (Pink)
· Cylinder with syphon
8 Refrigerant recovery equipment
[1] Cautions for service
(1) Perform service after recovering the refrigerant left in unit completely.
(2) Do not release refrigerant in the air.
(3) After completing service, charge the cycle with specified amount of refrigerant.
(4) When performing service, install a filter drier simultaneously.
Be sure to use a filter drier for new refrigerant.
[2] Additional refrigerant charge
When charging directly from cylinder
· Check that cylinder for R410A on the market is a syphon type.
· Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.)
OCH607

5
2-3. CAUTIONS FOR REFRIGERANT PIPING WORK
New refrigerant R410A is adopted for replacement inverter series. Although the refrigerant piping work for R410A is
same as for R22, exclusive tools are necessary so as not to mix with different kind of refrigerant. Furthermore as the
working pressure of R410A is 1.6 time higher than that of R22, their sizes of flared sections and flare nuts are different.
1Thickness of pipes
Because the working pressure of R410A is higher compared to R22, be sure to use refrigerant piping with thickness
shown below. (Never use pipes of 7/256 in [0.7 mm] or below.)
2Dimensions of flare cutting and flare nut
The component molecules in HFC refrigerant are smaller compared to conventional refrigerants. In addition to that,
R410A is a refrigerant, which has higher risk of leakage because its working pressure is higher than that of other
refrigerants. Therefore, to enhance air tightness and strength, flare cutting dimension of copper pipe for R410A has
been specified separately from the dimensions for other refrigerants as shown below. The dimension B of flare nut for
R410A also has partly been changed to increase strength as shown below. Set copper pipe correctly referring to cop-
per pipe flaring dimensions for R410A below. For 1/2 and 5/8 inch pipes, the dimension B changes.
Use torque wrench corresponding to each dimension.
3Tools for R410A (The following table shows whether conventional tools can be used or not.)
1/4
3/8
1/2
5/8
3/4
6.35
9.52
12.70
15.88
19.05
1/32 [0.8]
1/32 [0.8]
1/32 [0.8]
5/128 [1.0]
—
1/32 [0.8]
1/32 [0.8]
1/32 [0.8]
5/128 [1.0]
5/128 [1.0]
Nominal
dimensions
(in)
Diagram below: Piping diameter and thickness
Outside
diameter (mm)
Thickness : in [mm]
R410A R22
1/4
3/8
1/2
5/8
3/4
6.35
9.52
12.70
15.88
19.05
11/32-23/64 [ 9.1]
1/2-33/64 [13.2]
41/64-21/32 [16.6]
49/64-25/32 [19.7]
—
9.0
13.0
16.2
19.4
23.3
Nominal
dimensions (in)
Flare cutting dimensions
Outside
diameter (mm)
Dimension A ( )
+0
-0.4
R410A R22 (mm)(in [mm])
1/4
3/8
1/2
5/8
3/4
6.35
9.52
12.70
15.88
19.05
43/64 [17.0]
7/8 [22.0]
1-3/64 [26.0]
1-9/64 [29.0]
17.0
22.0
24.0
27.0
36.0
Nominal
dimensions (in)
Flare nut dimensions
Outside
diameter (mm)
Dimension B
(in [mm]) R410A R22 (mm)
—
Gauge manifold
Charge hose
Gas leak detector
Refrigerant recovery equipment
Refrigerant cylinder
Applied oil
Safety charger
Charge valve
Vacuum pump
Flare tool
Bender
Pipe cutter
Welder and nitrogen gas cylinder
Refrigerant charging scale
Vacuum gauge or thermis-
tor vacuum gauge and
vacuum valve
Charging cylinder
Air purge, refrigerant charge
and operation check
Gas leak check
Recover 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
Recover refrigerant
Check the degree of vacuum. (Vacuum
valve prevents back flow of oil and refri-
gerant to thermistor vacuum gauge)
Recover 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 adop-
ter for reverse flow check
Tools for other refrigerants
can be used by adjusting
flaring dimension
Tools can be used for other refrigerants
Tools can be used for other refrigerants
Tools can be used for other refrigerants
Tools can be used for other refrigerants
Tools can be used for other
refrigerants
Tool exclusive for R410A
Tools and materials Use R410A tools Can R22 tools be used?
(Usable if equipped
with adopter for rever-
se flow)
(Usable by adjusting
flaring dimension)
: 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.
Dimension A
Dimension B
OCH607

6
3 FEATURES
HIGH HEATING CAPACITY
Industry-first flash injection circuit is equipped, which enables to
keep the equal capacity to the rating even when outside tem-
perature is 5°F [−15°C].
HIGH SPEED HEATING START UP
The performance of heating start up is improved. Compared to
PUZ-A type, Hyper Heating Inverter reduced the time for heat-
ing start up by about half. After starting operation, the airflow
temperature goes up to 105°F [41°C] quickly in 10 minutes. With
industry first shorter and less frequent defrost, defrosting time is
cut down by 15% compared to PUZ-A type and heating operation
can continuously run for maximum 150 minutes.
WIDE HEATING RANGE
The heating range is expanded to −13°F [−25°C] compared to
PUZ-A type which is up to 10°F [−12°C].
CHARGELESS SYSTEM
PRE-CHARGED REFRIGERANT IS SUPPLIED FOR PIPING LENGTH AT SHIPMENT.
Maximum 100 ft, 30m
The refrigerant circuit with LEV (Linear Expansion Valve) and power receiver always control the optimal refrigerant level
regardless of the length (maximum: 100 ft [30 m] and minimum: 16 ft [5 m]) of piping. The additional refrigerant charg-
ing work during installation often causes problems. It is completely eliminated by chargelss system. This unique system
improves the quality and reliability of the work done. It also helps to speed up the installation time.
PUZ-HA30NHA5
PUZ-HA36NHA5
Outdoor W.B. temp.
Heating capacity
-13°F
[-25°C]
-4°F
[-20°C]
5°F
[-15°C]
14°F
[-10°C]
23°F
[-5°C]
32°F
[0°C]
A36
HA36
40,000
(Btu/h)
30,000
23,500BTU/h
38,000BTU/h
0
Performance
about 60%UP
33,000Btu/h
(Outlet air temp.
105°F[41°C])
About 5min.
Stable
About 50% CUT
Elapsed time(min.)
Heating capacity(peak)
About 10 min.
When stabled,
hot air of 122˚F[50˚C]
PUZ-A type:
Outlet air temp. 105˚F[41˚C]
HA36
Outlet air temp.105˚F[41˚C]w1
40,000
(Btu/h)
30,000
5 100
w1 Condition
Room temp. 70°F[21°C](D.B.) Outdoor temp. 35°F[1.7°C](D.B.) / 33°F[0.6°C](W.B.) : Hi notch
It does not become 122˚F[50˚C]
when outside air temp.
is too low.
0
Expanded
Up to -13
°F
Outdoor wet-bulb temperature
A36 type
HA36 type
-13°F
10°F
-13°F
[-25°C]
-4°F
[-20°C]
5°F
[-15°C]
14°F
[-10°C]
23°F
[-5°C]
32°F
[0°C]
OCH607

7
4 SPECIFICATIONS
Service Ref.
Power supply Phase Single
Cycle 60 Hz
Voltage 208/230 V
MCA A 28
MOCP A 40
Breaker size A 30
External finish Munsell 3Y 7.8/1.1
Heat exchanger Plate fin coil
Defrost method Reverse cycle
Crankcase heater kW —
Compressor Hermetic
Model
Motor output kW 2.5
R.L.A. 20
L.R.A. 27.5
Starter type Inverter
Fan Fan(drive) oNo. Propeller fan o2
Fan motor output kW 0.086 + 0.086
Fan motor F.L.A. 0.40 + 0.40
Airflow m
3
/min 100
CFM 3530
Sound level Cooling dB 52
Heating dB 53
Protection devices HP switch
LP switch
Discharge thermo
Dimension W mm 950
D mm 330+30
H mm 1350
W in 37-12/32
D in 13 + 1-3/16
H in 53-5/32
Weight kg
lb
Refrigerant
Charged kg 5.5
R410A
lb 12
Control Linear expansion valve
Oil Model Ether (FV50S)
Charged L 1.4
oz 45
Refrigerant Pipe size OD mm 9.52
piping Liquid in 3/8
Pipe size OD mm 15.88
Gas in 5/8
Connection method Indoor Flared
Connection method Outdoor Flared
Height difference m Maximum 30
IU - OU ft Maximum 100
Piping length m Maximum 75
ft Maximum 245
PUZ-HA30NHA5
PUZ-HA36NHA5
ANB33FJEMT
120
265
OCH607

8
Piping Length (one way)
Charged
Factory
Service Ref. 100 ft 110 ft 120 ft 130 ft 140 ft 150 ft 160 ft 165 ft
30 m 33 m 37 m 40 m 43 m 46 m 49 m 50 m
PUZ-HA30NHA5
PUZ-HA36NHA5
194 oz 200 oz 206 oz 212 oz 218 oz 224 oz 230 oz 237 oz 195 oz
5.5 kg 5.7 kg 5.9 kg 6.0 kg 6.2 kg 6.4 kg 6.6 kg 6.7 kg
180 ft 200 ft 210 ft 230 ft 245 ft
55 m 61 m 64 m 70 m 75 m
242 oz 254 oz 260 oz 272 oz 280 oz
6.9 kg 7.2 kg 7.4 kg 7.7 kg 7.9 kg 5.5 kg
Additional charge is required for pipes longer than 100 ft.
Service Ref.
Compressor model
(")
Winding Resistance
U-V
U-W
W-V
(at 68°F [20°C])
PUZ-HA30NHA5
PUZ-HA36NHA5
ANB33FJEMT
0.188
0.188
0.188
5-1. REFILLING REFRIGERANT CHARGE (R410A: oz, kg)
5-2. COMPRESSOR TECHNICAL DATA
5DATA
5-3. NOISE CRITERION CURVES
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
PUZ-HA30NHA5
PUZ-HA36NHA5
COOLING
MODE
HEATING
52
SPL(dB)
53
LINE
5 ft
3.3 ft
MICROPHONE
UNIT
GROUND
OCH607

9
PUZ-HA30NHA5
Representative matching PKA-A36KA6
Mode COOLING HEATING
Total Capacity BTU/h 33,500
2,790
38,000
3,410
Input W
Electrical circuit
Indoor unit model PKA-A36KA6
Phase Single
Cycle 60 Hz
Voltage 230 V
Current 0.36A
Outdoor unit model PUZ-HA36NHA5
Phase Single
Cycle 60Hz
Voltage 230V
Current
Refrigerant circuit
Discharge pressure MPa
Suction pressure MPa
Discharge temperature °C
Condensing temperature °C
Suction temperature °C
Ref. Pipe length m
Discharge pressure PSIG
Suction pressure PSIG
Discharge temperature °F
Condensing temperature °F
Suction temperature °F
Ref. Pipe length ft
side
Indoor Intake air temperature DB °C
Intake air temperature WB °C
Discharge air temperature DB °C
side
Outdoor Intake air temperature DB °C
Intake air temperature WB °C
side
Indoor Intake air temperature DB °F
Intake air temperature WB °F
Discharge air temperature DB °F
side
Outdoor Intake air temperature DB °F
Intake air temperature WB °F
SHF
BF
PKA-A30KA6
COOLING HEATING
12.2 A
2.58
0.87
70.8
44.4
10.5
7.6
374
126
159
112
51
25
26.7
19.4
12.5
35
23.9
80
67
55
95
75
0.71
0.09
15.4 A
2.94
0.73
75.6
49.7
2.8
7.6
427
106
168
121
37
25
21.1
15.6
43.5
8.3
6.1
70
60
110
47
43
—
—
30,000
2,500
32,000
2,930
PKA-A30KA6
0.57A
11.1 A
2.51
0.88
67.7
43.3
10.8
7.6
364
128
154
110
51
25
26.7
19.4
12.3
35
23.9
80
67
54
95
75
0.70
0.09
13.0 A
2.92
0.71
78.1
49.4
2.5
7.6
424
103
173
121
37
25
21.1
15.6
43.4
8.3
6.1
70
60
110
47
43
—
—
5-4. STANDARD OPERATION DATA
OCH607

10
6OUTLINES AND DIMENSIONS
PUZ-HA30NHA5 Unit : mm<inch>
PUZ-HA36NHA5
Min. 1000mm
<39-3/8>
Min. 150mm <5-29/32>
Min. 10mm
<3/8>
Min. 10mm <3/8>
FREE
<Foundation bolt height>
FOUNDATION
Service space
Terminal Block
Left···Power supply wiring Right····Indoor/Outdoor wiring
Earth terminal
Service panel
Handle
1
2
23<29/32>
1076<42-3/8>
* 1 447<17-19/32>
* 1 443<17-7/16>
Handle
Front piping cover
Rear piping cover
Air Discharge
Rear Air Intake
Side Air Intake
31<1-7/32>
145
<5-23/32>
145
<5-23/32>
220
<8-21/32>
30<1-3/16>
145
<5-23/32>
81<3-3/16> 219<8-5/8>
71<2-13/16>
71<2-13/16>
Bottom piping hole (Knockout)
Drain hole 5-[33<1-5/16>
Handle
Side Air Intake
Air intake
Rear Air Intake
Handle
Handle
40<1-9/16>
74<2-19/32>
When installing the conduit. Set the attachment to the inner side of each panel.
2-[22.2<7/8>
1/2 Conduit attachment
45<1-25/32>
40<1-9/16>
65<2-9/16>
92<3-5/8>
27<1-1/16>
55<2-3/16>
23<29/32> 73<2-7/8>
63<2-1/2>
Rear piping hole (Knockout)
Rear trunking hole (Knockout)
Conduit hole (2-[27<1-1/16>Knockout)
[92
<3-5/8>
19<3/4>
55<2-3/16>
92<3-5/8>
75
<2-31/32>
40<1-9/16>
73<2-7/8>
63<2-1/2>
23<29/32> 27<1-1/16>
92<3-5/8>
Right piping hole (Knockout) Right trunking hole
(Knockout)
Conduit hole (2-[27<1-1/16>Knockout)
[92
<3-5/8>
92<3-5/8>
65<2-9/16>
45<1-25/32>
40<1-9/16>
27<1-1/16>
55<2-3/16>
23<29/32>
73<2-7/8>
63
<2-1/2>
Front piping hole (Knockout)
Front trunking hole (Knockout)
Conduit hole (2-[27<1-1/16>Knockout)
[92
<3-5/8>
371<14-19/32>
330<13>30<1-3/16>
175<6-7/8> 600<23-5/8> 175<6-7/8>
42<1-21/32>66<2-5/8>
950<37-13/32>
322<12-11/16>
1350<53-5/32>
635<25>
19<3/4>
417<16-13/32>
370<14-9/16>
2-U Shaped notched hole (Foundation Bolt M10<W3/8>)
56<2-7/32>
28<1-3/32>
53<2-3/32>
45<1-25/32>
2-12 o 36 Oval hole (Foundation Bolt M10<W3/8>)
1····Refrigerant GAS pipe connection (FLARE)[15.88<5/8> 2····Refrigerant LIQUID pipe connection (FLARE)[9.52<3/8> *1 ····Indication of STOP VALVE connection location.
Example of Notes
1 FREE SPACE (Around the unit)
2 SERVICE SPACE
3 FOUNDATION BOLTS
4 PIPING-WIRING DIRECTIONS
Piping Knockout Hole Details
The diagram below shows a basic example. Explanation of particular details are given in the installation manuals, etc.
Dimensions of space needed for service access are shown in the below diagram.
Please secure the unit firmly with 4 foundation (M10<W3/8>) bolts. (Bolts and washers must be purchased locally.)
Piping and wiring connections can be made from 4 directions: front, right, rear and below.
Min. 10mm<3/8>
Min.
500mm
<19-11/16>
Min. 500mm <19-11/16>
Min.
150mm
<5-29/32>
Min.
30mm
<1-3/16>
OCH607

11
7WIRING DIAGRAM
PUZ-HA30NHA5 PUZ-HA36NHA5
TB1
MC
MF1, MF2
21S4
63H
TH3
TH4
TH6
TH7
TH8
LEV-A, LEV-B, LEV-C
DCL
Terminal Block<Power Supply, Indoor/Outdoor>
Motor for Compressor
Fan Motor
Solenoid Valve (4-Way Valve)
High Pressure Switch
63L Low Pressure Switch
Thermistor<Liquid>
TH32 Thermistor<Suction>
TH33 Thermistor<Ref. check>
Thermistor<Discharge>
Thermistor<2-Phase Pipe>
Thermistor<Ambient>
Thermistor<Heat Sink>
Linear Expansion Valve
Reactor
P.B. Power Circuit Board
ACTM Active Filter Module
CB Main Smoothing Capacitor
CY1, CY2 Capacitor
Noise Filter Circuit Board
N.F.
Controller Circuit Board
C.B.
SYMBOL NAME SYMBOL NAME
Switch<Function Switch>
Switch<Function Switch>
Switch<Function Switch>
Switch
<Manual Defrost, Defect History Record
Reset, Refrigerant Address>
Switch<Test Operation>
Switch<Function Switch, Model Select>
Switch<Model Select>
SW7
SW1
SW4
SW5
SW6
SW8
SW9
Switch<Pump Down>
SWP
Connector<Emergency Operation>
CN31
F1, F2, F3, F4
CNM
CNMNT
CNVMNT
CNDM
Connector<Connection for Option>
CN51
Fuse<T6.3AL250V>
SS Connector<Connection for Option>
Connector<Connection for Option>
Connector<Connection for Option>
Connector<Connection for Option>
Connector<Connection for Option>
1 2 3 4 5 6 7 8
MODEL SW6
*1 MODEL SELECT
*
2 SW5 -1 to 5 : Function Switch
SW5-6 *2
OFF
ON
30N
OFF
ON
1 2 3 4 5 6
1 2 3 4 5 6 7 8
OFF
ON
36N
OFF
ON
1 2 3 4 5 6
The black square (■ )indicates a switch position.
SYMBOL
M-NET ADAPTER
NAME
TB7
CN5
CND
CN2M
Terminal Block<M-NET connection>
Connector<Transmission>
Connector<Power Supply>
Connector<M-NET communication>
CN5
(WH)
3 1
TB7
2
1
CND
(WH)
CN2M
(WH)
M-NET ADAPTER
M-NET
A B S
When M-NET Adapter is connected
CNVMNT
(WH)
31
CNDM
(WH)
CN51
(WH)
1
3
1
5
CNMNT
(WH)
CNM
(WH)
51
LEV-A
(WH)
LEV-A
C. B.
LEV-B
(RD)
LEV-B
6
3
55
1
TH7/6
(RD)
63H
(YE)
TRANS
X55 X51
TH3
(WH)
CNDC
(PK)
CNF1
(WH)
CNF2
(WH)
TH4
(WH)
TH7 TH6 TH3 TH4
41 21
TH32
(BK)
TH32
2
1 2 1
SW7
SW6SW1
SW9
CN31
141
MF1
MF2
M M
7
1
CN2
(WH)
CNS
(WH)
CNAC
(WH)
CN4
(WH)
SV2
(BU)
SS
(WH)
21S4
(GN)
2
1
LED1
LED2
X52
F1
F2
F4
F3
*
1
*
1
21
43
SW5SW8SW4 SWP
IPM
UVW
21S4
61
31
7
1
3
1
2
3 1
71
LEV-C
(BU)
6
1
7
2
TH33
(YE)
TH33
31
13 13 13
CN52C
(RD)
2
2
1
TABN
TABP
CN3
(WH)
CNAF
(WH)
CN2
(WH)
CN4
(WH)
CN5
(RD)
TH8
CB
1
4
1
7
7
1
2
1
2
1
2
2
2
3
2
6
RD
RD
TABP2
WH
WH
P. B.
CNDC
(PK)
TABU
TABV
TABW
BK
WH
DS2
DS3 TABT
TABS
TABP1
TABN1
BK
1
TABN2
WH
WH
BU
BU
RD
CY1
CY2
LI NI
LO NO
EI
E2
POWER SUPPLY
208/230VAC 60Hz
TO INDOOR
UNIT
TB1
L1 L2 GR S1 S2 S3
N. F.
MC
12
2
3
1
3
1
1
2
2
CN5
(RD)
RD
RD
CNAC1
(WH)
CNAC2
(RD)
CN52C
(BK)
BU
DCL
ACTM
L1 L2
N2
N1
P
Io
RD
BK
RD
WH
WH
BK
61
4
BU
YE
GN
OG BN
63H
63L
(RD)
31
63L
LEV-C
M
5
3
5
1
RD
5
*Use copper supply wires.
Utilisez des fils d'alimentation en cuivre.
BK
BK
OCH607

12
8WIRING SPECIFICATIONS
8-1. INDOOR UNIT POWER SUPPLIED FROM OUTDOOR UNIT
The following connection patterns are available.
The outdoor unit power supply patterns vary on models.
1:1 System Simultaneous twin system
AOutdoor unit power supply
BEarth leakage breaker
CWiring circuit breaker or isolating switch
DOutdoor unit
EIndoor unit/outdoor unit connecting cords
FRemote controller
GIndoor unit
HIndoor unit earth
S1
S2
L1
L2
GR
1
2
S1
S2
S3
S3
1
2
S1
S2
S3
1
2
S1
S2
S3
Warning:
In case of A-control wiring, there is high voltage potential on the S3 terminal caused byelectrical circuit design that has no electrical insulation between power line
and communication signal line. Therefore, please turn off the main power supply when servicing. And do not touch the S1, S2, S3 terminals when the power is
energized. If isolator should be used between indoor unit and outdoor unit, please use 3-pole type.
Affix a label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.
Indoor unit model PLA-A18, 30
PCA-A30, PKA-A18, 30, 36
PLA-A36
PCA-A36
1A 2A
15A 15A
– –
A
D
C
B
S1
S2
L1
L2
GR
S3
A
D
C
B
E
F
E
F
GG G
HH H
Indoor unit power supply
Minimum circuit ampacity
Maximum rating of overcurrent protective device
*1. Maximum 147 ft [45 m]
If AWG13 is used, maximum 164 ft [50 m].
If AWG13 is used and S3 is separated, maximum 262 ft [80 m].
*2. The 30 ft [10 m] wire is attached in the remote controller accessory. Maximum 1500 ft
*3. The figures are NOT always against the ground.
S3 terminal has 24 V DC against S2 terminal. However between S3 and S1, these terminals are NOT electrically insulated by the transformer or other device.
*4. Use earth leakage breaker (NV)
1. Wiring size must comply with the applicable local and national code.
2. Use copper supply wires.
3. Use wires rated 600V or more for the power supply cables and the indoor/outdoor unit connecting cables.
4. Install an earth longer than other cables.
Notes:
Outdoor unit model
Outdoor unit power supply
Breaker size
Minimum circuit ampacity
Maximum rating of overcurrent protective device
Outdoor unit power supply
Outdoor unit power supply earth
Indoor unit-Outdoor unit *1
Indoor unit earth
Remote controller-Indoor unit *2
Outdoor unit L1-L2 *3
Indoor unit-Outdoor unit S1-S2 *3
Indoor unit-Outdoor unit S2-S3 *3
Remote controller-Indoor unit *3
HA30
Single, 208/230 V, 60 Hz
30A
28A
40A
2 oMin. AWG 10
1 oMin. AWG 10
3 oAWG 16 (polar)
1 oMin. AWG 16
2 o AWG 22 (Non-polar)
208/230 V AC
24 V DC
Wiring
Wire No. o
size
Circuit
rating
S1
S2
S3
S1
S2
S3
A-Control
Outdoor Unit
3 poles isolator
208/230 V
Single phase
Isolator
A-Control
Indoor Unit
*4
• Turn on the main power when the ambient temperature is −4°F [−20°C] or higher.
• In below −4°F [−20°C] condition, it needs at least 4 hr standby to operate in order to warm the electrical parts.
208/230 V AC
12 V DC
OCH607

13
8-2. SEPARATE INDOOR UNIT/OUTDOOR UNIT POWER SUPPLIES
The following connection patterns are available.
The outdoor unit power supply patterns vary on models.
1:1 System
S1
S2
1
2
S1
S2
S3
S3
Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.
The optional indoor power supply terminal kit is required. Outdoor unit power supply
Wiring circuit breaker or isolating switch
Outdoor unit
Indoor unit/outdoor unit connecting cords
Remote controller
Indoor unit
Indoor unit power supply
Simultaneous twin system
If the indoor and outdoor units have separate power supplies, refer to the table below.
Change the indoor unit electrical box wiring referring to the figure in the right and
the DIP switch settings of the outdoor unit control board.
Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.
Outdoor unit power supply
Wiring circuit breaker or isolating switch
Outdoor unit
Indoor unit/outdoor unit connecting cords
Remote controller
Indoor unit
Indoor unit power supply
ON
OFF 1 2 (SW8)
3
Indoor unit electrical box connector con-
nection change
Label affixed near each wiring diagram
for the indoor and outdoor units
Outdoor unit DIP switch settings (when
using separate indoor unit/outdoor unit
power supplies only)
Indoor unit specifications
Required
Required
*1. Maximum 165 ft [50 m]
*2. The 30 ft [10 m] wire is attached in the remote controller accessory. Maximum 1500 ft [500 m]
*3. The figures are NOT always against the ground.
Notes: 1. Wiring size must comply with the applicable local and national code.
2. Use copper supply wires.
3. Use wires rated 300 V or more for the power supply cables.
4. Install an earth longer than other cables.
Indoor unit model
Indoor unit power supply
Minimum circuit ampacity
Maximum rating of overcurrent protective device
Indoor unit power supply
Indoor unit power supply earth
Indoor unit-Outdoor unit *1
Indoor unit earth
Remote controller-Indoor unit *2
Indoor unit L1-L2 *3
Indoor unit-Outdoor unit S1-S2 *3
Indoor unit-Outdoor unit S2-S3 *3
Remote controller-Indoor unit *3
PLA-A18, 30
PCA-A30, PKA-A18 PLA-A36, PCA-A36
Single 208/230 V, 60 Hz ,Single 208/230 V 60 Hz
1 A 2A
15A 15A
2
oMin. AWG16 2 oMin. AWG16
1
oMin. AWG16 1 oMin. AWG16
2
oAWG22 (polar) 2 oAWG22 (polar)
2
oAWG22 (Non-polar) 2 oAWG22 (Non-polar)
208/230 V AC
24 V DC 24 V DC
12 V DC 12 V DC
Circuit
rating
Connectors (connections when shipped
from the factory are for indoor unit power
supplied from outdoor unit)
Indoor unit power supplied from outdoor unit
(Initial setting)
If the indoor and
outdoor units have
separate power
supplies, change the
connections of the
connectors as shown
in the following
figure.
Connectors
Indoor unit
control board
Separate indoor unit/outdoor unit power
supplies
Indoor unit
control board
Note: There are three types of labels (labels A, B, and C).
Affix the appropriate labels to the units according to the wiring method.
S1
S2
1
2
L1
L2
L1
L2
GR GR
L1
L2
GR
S1
S2
S3
1
2
S1
S2
S3
S3
S1
S2
S3
L1
L2
GR
BLUE BLUE
YELLOW YELLOW
CN01
S1
S2
S3
L1
L2
GR
YELLOW
BLUE
BLUE
YELLOW
Wiring
Wire No.
o
size
– –
– –
A
Earth leakage breaker
B
C
D
E
F
G
H
Option
J
Option
J
A
Earth leakage breaker
B
C
D
E
F
G
H
AJ
J
D
C
B
E
F
G
A
D
E
F
G G
CN01
K
Indoor unit earth
K
208/230 V AC
HC
B
C
BH
C
B
L1
L2
GR
L1
L2
GR
OCH607

14
8-3. INDOOR – OUTDOOR CONNECTING CABLE
Note: The Maximum cable length may vary depending on the condition of installation, humidity or materials, etc.
Indoor unit-Outdoor unit
Outdoor power supply Max. 147 ft [45 m]
3 oAWG15(polar)
Max. 164 ft [50 m]
3 oAWG13(polar)
Max. 262 ft [80 m]
3 oAWG13(polar) and S3 separated
Wire No. oSize
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.
Indoor unit-Outdoor unit
Indoor/Outdoor separate
power supply Max. 393 ft [120 m]
2 oMin. AWG22
Wire No. oSize
Note: The optional indoor power supply terminal kit is necessary.
8-4. M-NET WIRING METHOD
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 208/230 V power supply. If it is connected,
electronic parts on M-NET P.C. board may be burnt out.
(3) Use 2-core x AWG16 [1.25 mm2] shield 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 is acceptable 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.
“Ed” error will appear on the LED display of outdoor unit.
“0403” error will appear on the central-control remote controller.
If there are more than 2 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 1 circuit.
To avoid communication errors caused by noise, make sure to observe the single spot grounding method described in the
installation manual.
Centralized
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
Centralized
controller
M-NET transmission wire
O Bad example (Multi spot grounding of shield wire)
Good example 1 (Single spot grounding of shield wire)
Power
supply unit
M-NET type
outdoor unit
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
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)
Centralized
controller
Centralized
controller
Power
supply unit
Power
supply unit
OCH607

15
8-4-3. Regulations in address settings
In case of multiple grouping system, M-NET and refrigerant address settings should be done as explained in the above sec-
tion. Set the lowest number in the group for the outdoor unit whose refrigerant address is “00” as its M-NET address.
Note: Refrigerant addresses can be overlapped if they are in the different group.
Note: 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 “03” 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”.
8-4-1. M-NET address setting
In A-control models, M-NET address and refrigerant address should be set only for the outdoor unit. Similar to CITY MULTI
series, 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 CITY MULTI 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 board of outdoor unit.
(Initial setting: all addresses are set to “0”.)
8-4-2. 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 set-
ting is not conducted. Set the refrigerant address by using DIP SW1-3 to 1-6 on the outdoor controller board. [Initial setting:
all switches are OFF. (All refrigerant addresses are “00”.)]
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
1 2
–
50
M-NET Address No. <Setting example>
Switching
setting
SW11
ones
digit
SW12
tens
digit
OFF
ON
123456123456123456123456123456123456123456123456
123456 123456 123456 123456 123456 123456 123456 123456
0
Refrigerant
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
A-control
remote
controller
Group A Group B Group C
A-control
remote
controller
TB5
A-control
remote
controller
Refrigerant
address 00
M-NET
address 01
Refrigerant
address 00
M-NET
address 02
Refrigerant
address 01
M-NET
address 03
Refrigerant
address 00
M-NET
address 04
Power
supply unit
Centralized
controller
Power
supply unit
A-control
remote
controller
A-control
remote
controller
TB5
Group A Group B
Refrigerant
address 00
M-NET
address 01
Refrigerant
address 01
M-NET
address 02
Refrigerant
address 00
M-NET
address 04
Refrigerant
address 01
M-NET
address 03
Refrigerant
address 02
M-NET
address 05
Centralized
controller
●M-NET wiring
(1) Use 2-core x AWG16 [1.25 mm2] 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 A terminal 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(M1), B(M2), S) on M-NET terminal block should be individually wired to the other
outdoor unit’s terminal, i.e. A to 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.
Transmission
wire Shield part
M-NET
terminal
block Ground
wire
A B S
OCH607

16
9REFRIGERANT SYSTEM DIAGRAM
PUZ-HA30NHA5 PUZ-HA36NHA5 Unit: mm (in)
Distributor
Thermistor TH7
(Ambient)
Heat exchanger
Refrigerant
GAS pipe
connection
[15.88(5/8)
Refrigerant
LIQUID pipe
connection
[9.52
(3/8) Stop valve
(with service port)
Strainer
(#100)
Power
receiver
Linear
expansion valve-B
Linear
expansion valve-C
Linear expansion valve-A
Thermistor
TH6
(2-phase pipe)
Thermistor TH3
(Liquid)
Charge plug
(Low pressure)
Charge plug
(High pressure)
Heat inter change circuit
Thermistor TH4
(Discharge)
Compressor Injection port
Strainer
(#50)
Solenoid valve
(4-way valve)
Strainer
(#100)
Strainer
(#100)
Strainer
(#100)
Strainer
(#100)
Muffler
Ball valve
Thermistor TH33
(Ref. check)
Thermistor
TH32
(Suction)
Low pressure
switch 63L
High pressure
switch 63H
Refrigerant flow in cooling
Refrigerant flow in heating
Thermistor TH8
(Heat sink)
Power circuit board
REFRIGERANT COLLECTING (PUMP DOWN)
When relocating or disposing of the indoor/outdoor unit, pump down the system following the procedures below so that no refrig-
erant is released into the atmosphere.
1 Turn off the power supply (circuit breaker).
2 Connect the low-pressure valve on the gauge manifold to the charge plug (low-pressure side) on the outdoor unit.
3 Close the liquid stop valve completely.
4 Supply power (circuit breaker).
• When power is supplied, make sure that “CENTRALLY CONTROLLED” is not displayed on the remote controller. If “CEN-
TRALLY CONTROLLED” is displayed, the refrigerant collecting (pump down) cannot be completed normally.
• Start-up of the indoor-outdoor communication takes about 3 minutes after the power (circuit breaker) is turned on. Start the
pump-down operation 3 to 4 minutes after the power (circuit breaker) is turned on.
5 Perform the refrigerant collecting operation (cooling test run).
• Push the pump-down SWP switch (push-button type) on the control board of the outdoor unit. The compressor and ventilators
(indoor and outdoor units) start operating (refrigerant collecting operation begins). (LED1 and LED2 on the control board of
the outdoor unit are lit.)
• Only push the pump-down SWP switch if the unit is stopped. However, even if the unit is stopped and the pump-down SWP
switch is pushed less than 3 minutes after the compressor stops, the refrigerant collecting operation cannot be performed.
Wait until the compressor has been stopped for 3 minutes and then push the pump-down SWP switch again.
6 Fully close the ball valve on the gas pipe side of the outdoor unit when the pressure gauge on the gauge manifold shows 0.05
to 0 MPa [Gauge] (approx. 0.5 to 0 kgf/cm²) and quickly stop the air conditioner.
• Because the unit automatically stops in about 3 minutes when the refrigerant collecting operation is completed (LED1 off,
LED2 lit), be sure to quickly close the gas ball valve. However, if LED1 is lit, LED2 is off, and the unit is stopped, open the
liquid stop valve completely, close the valve completely after 3 minutes or more have passed, and then repeat step 5. (Open
the gas ball valve completely.)
• If the refrigerant collecting operation has been completed normally (LED1 off, LED2 lit), the unit will remain stopped until the
power supply is turned off.
• Note that when the extension piping is very long with a large refrigerant amount, it may not be possible to perform a pump-
down operation. In this case, use refrigerant recovery equipment to collect all of the refrigerant in the system.
7 Turn off the power supply (circuit breaker), remove the gauge manifold, and then disconnect the refrigerant pipes.
Warning:
When pumping down the refrigerant, stop the compressor before disconnecting the refrigerant pipes.
•
If the refrigerant pipes are disconnected while the compressor is operating and the stop valve (ball valve) is open, the pressure
in the refrigeration cycle could become extremely high if air is drawn in, causing the pipes to burst, personal injury, etc.
OCH607

17
10 TROUBLESHOOTING
<Check code displayed by self-diagnosis and actions to be taken for service (summary)>
Present and past check codes are logged, and they can be displayed on the wired remote controller and control board of out-
door unit. Actions to be taken for service, which depends on whether or not the trouble is reoccurring in the field, are summa-
rized in the table below. Check the contents below before investigating details.
10-1. TROUBLESHOOTING
Unit conditions at service Check code Actions to be taken for service (summary)
The trouble is reoccurring.
Displayed
Not displayed
Judge what is wrong and take a corrective action according
to “10-4. SELF-DIAGNOSIS ACTION TABLE”.
Conduct trouble shooting and ascertain the cause of the
trouble according to “10-5. TROUBLESHOOTING BY
INFERIOR PHENOMENA”.
The trouble 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, etc.
Re-check the symptom, and check the installation
environment, refrigerant amount, when the trouble
occurred, matters related to wiring, etc.
2
Reset check code logs and restart the unit after finishing
service.
3There is no abnormality concerning of parts such as
electrical component, controller board, remote controller,
etc.
1Re-check the abnormal symptom.
2
Conduct troubleshooting and ascertain the cause of the
trouble according to “10-5. TROUBLESHOOTING 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 board, remote controller,
etc.
10-2. CHECK POINT UNDER TEST RUN
(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 (L1, L2) on the outdoor unit by 500 V Megger
and check that it is 1.0 M" or over.
Note: Do not use 500 V Megger 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.
• Turn on power supply 12 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 “12. FUNCTION SETTING".
Make sure to read operation manual before test run. (Especially items to secure safety.)
OCH607

18
F1 F2 F3 F4
unemecivreS
rosruC
:unemniaM
Test run
Input maintenance info.
Function setting
Check
Self check
F1 F2 F3 F4
Test run menu
Cursor
Service menu:
Test run
Drain pump test run
1 Select "Service" from the Main menu, and press the button.
2 Select "Test run" with the F1 or F2 button, and press the button.
Select "Test run" with the F1 or F2 button, and press the button.
F1 F2 F3 F4
Cool
Pipe
Auto
Switch disp.
Mode Fan
RemainTest run
F1 F2 F3 F4
Remain
Vane
Cool mode: Check the cold air blows out.
Heat mode: Check the heat blows out.
Press the F1 button to go through the operation modes in the order of "Cool
and Heat".
Check the auto vane with the F1 F2 buttons.
Press the button to return to “Test run operation”.
Press the button.
When the test run is completed, the “Test run menu” screen will appear.
The test run will automatically stop after 2 hours.
Test run operation
Auto vane check
Press the button and open the Vane setting screen.
Function buttons
F1 F2 F3 F4
MENU RETURN SELECT ON/OFF
10-2-1. Test run for wired remote controller
Check the operation of the outdoor unit fan.
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F1 F2 F3 F4
Error information
Error code
Error unit IU
Ref. address Unt#
Model name
Serial No.
ResetPage
Error information
Contact information
Dealer
Te l
ResetPage
Reset error: Reset button
Reset error: Reset button
blinks
1 Check code, error unit, refrigerant address, unit model name, and serial
number will appear.
The model name and serial number will appear only if the information has
been registered.
Press the F1 or F2 button to go to the next page.
When an error occurs, the following screen will appear.
Check the error status, stop the operation, and consult your dealer.
Contact information (dealer's phone number) will appear if the information has
been registered.
F1 F2 F3 F4
F1 F2 F3 F4
Error information
Error reset
Error reset
Error code
Error unit IU
Ref. address Unt#
Model name
Serial No.
ResetPage
Reset current error?
Error reset
OKCancel
Main menu:
Reset error: Reset button
blinks
2 Press the F4 button or the button to reset the error that is occurring.
Errors cannot be reset while the ON/OFF operation is prohibited.
Select "OK" with the F4 button.
Navigating through the screens
• To go back to the Main menu .......... button
<Error information>
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F1 F2 F3 F4
Main
Main display:
Cursor Page
Main menu
Restriction
Energy saving
Night setback
Filter information
Error information
blinks
While no errors are occurring, page 2/2 of the error information can be viewed by
selecting "Error information" from the Main menu.
Errors cannot be reset from this screen.
<Checking the error information>
<Error history>
F1 F2 F3 F4
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Test run
Input maintenance info.
Function setting
Check
Self check
F1 F2 F3 F4
Check menu
Cursor
Service menu:
Error history
Refrigerant volume check
Refrigerant leak check
Smooth maintenance
Request code
F1 F2 F3 F4
Error history
Page Delete
Check menu:
Error Unt# dd/ mm /yy
Error history
Cancel OK
Delete error history?
Error history
Check menu:
Error history deleted
2 Select "Error history" with the F1 or F2 button, and press the button.
Select "Check" with the F1 or F2 button, and press the button.
3 Select "Error history" from the Check menu, and press the button to view
up to 16 error history records.
4 records are shown per page, and the top record on the rst page indicates
the latest error record.
Error history
4 To delete the error history, press the F4 button (Delete) on the screen that
shows error history.
A conrmation screen will appear asking if you want to delete the error history.
Press the F4 button (OK) to delete the history.
"Error history deleted" will appear on the screen.
Press the button to go back to the Check menu screen.
Deleting the error history
1 Select "Service" from the Main menu, and press the button.
OCH607