61
8-1-3. Countermeasures for Error During Test Run
• If a problems occurs during test run, a code number will appear in the temperature display area on the remote controller
(or LD1 on the outdoor unit), and the air conditioning system will automatically cease operating.
Determine the nature of the abnormality and apply corrective measures.
The operational status of the outdoor unit controller is displayed on the LD1 of the outdoor unit under normal conditions (when
all SW1’s are OFF)
Field
Display item
1
Compressor
is operating
2
52C
3
21S4
4
SV1
5
6
7
8
Lit steadily
Example: When the air conditioner is in the heating mode and the SV1 and compressor turned on.
1 2
3 4
5 6
7 8
LD1
52C : Compressor Contactor
21S4 : 4-way coil
w
1
SV1 : Solenoid coil
w
2
Check code
Check code
Trouble
Trouble
1102
1108
1302
1500
1501
1505
2502
2503
4115
4116
4220
4230
4250
5101
5102
5103
5105
5106
5110
5201
5300
Discharge temperature trouble
Compressor's inner thermal sensor trouble
High pressure trouble
Excessive refrigerant replenishment
Insufficient refrigerant
Vacuum operation protection
Drain pump trouble
Drain sensor trouble (THd)
Power synchronization signal trouble
Indoor unit fan rotation trouble
Inverter main voltage drop
Overheat protection of radiator panel
Multiple IPM errors (Over current trouble)
Intake thermistor trouble (TH21) or discharge
thermistor trouble (TH1)
Liquid pipe thermistor trouble (TH22) or low pressure
saturation thermistor trouble (TH2)
Gas pipe temperature sensor trouble (TH23)
Piping temperature sensor trouble (TH5)
Outdoor temperature sensor trouble (TH6)
ACTM/IGBT Radiator panel thermistor trouble (THHS-A/B)
(PUMY-125VMA PUMY-125VMA
1
)
IPM Radiator panel thermistor trouble (THHS)
PUMY-71VM PUMY-125VM PUMY-125YM
PUMY-71VM
1
PUMY-125VM
1
PUMY-125YM
1
PUMY-71VM
2
PUMY-125VM
2
PUMY-125YMA
Pressure sensor trouble (63HS)
Current sensor error (PUMY-125VMA PUMY-125VMA
1
)
Duplicated unit address setting
Transmission error (Transmission processor
hardware error)
Transmission error (Transmission route BUSY)
Transmission and reception error
(Communication trouble with transmission processor)
Transmission and reception error (No ACK error)
No response
MA communication receive signal error
(no receive signal)
MA communication send signal error
(starting bit detection error)
MA communication send error (H/W error)
MA communication receive error
(Synchronous recovery error)
Total capacity error
Capacity code error
Connecting unit number error
Address set error
Remote controller sensor trouble
Communication trouble with Power Board
(PUMY-125VMA PUMY-125VMA
1
)
6600
6602
6603
6606
6607
6608
6831
6832
6833
6834
7100
7101
7102
7105
7111
0403
( )
Only PUMY-125VMA model
w
1 4-way valve
w
2 Solenoid valve
OC183E--3.qxp 10.5.6 3:05 PM Page 61