Service manual

13
6-2. Self-diagnosis and Remedy (Display on Outdoor controller board)
<Abnormalities detected with the power on>
Error code Error codeTrouble Trouble
1102
1108
1302
1500
1501
1505
2502
2503
4115
4116
4220
4230
4250
5101
5102
5103
5105
5106
5110
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
Intake thermistor trouble (TH21) or discharge
thermistor trouble (TH1)
Liquid pipe thermistor trouble (TH22) or intake pressure
saturation pressure thermistor trouble (TH2)
Gas pipe temperature sensor trouble (TH23)
Piping temperature sensor trouble (TH5)
Outdoor temperature sensor trouble (TH6)
IPM heat sink thermistor trouble (THHS)
Pressure sensor trouble (63HS)
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
5201
6600
6602
6603
6606
6607
6608
6831
6832
6833
6834
7100
7101
7102
7105
7111
Error codes will be displayed in LD1 on the outdoor controller board if abnormalities occur while unit is running. Therefore,
check LD1 on the outdoor controller board first in that case. If no code is displayed in LD1, check LED on the indoor controller
board.
<List of error codes in LD1>
Display
7101
7103
1110
Meaning and detecting method Causes Check points
Capacity code error
1Abnormal if capacity code SW of R-
Converter unit is set to "0".
2Abnormal if capacity code setting
of R-Converter unit is not the same
as that of indoor unit.
1No setting or setting mistakes of
capacity code SW.
2Mis-wiring connection between
indoor unit and R-Converter unit
(Converse wiring).
1Check capacity code setting.
2Check if there is no mis-wiring
connection.
Combination error
1Abnormal if R-Converter unit is
connected to the indoor unit which
is not designed for connecting to R-
Converter type.
2Abnormal if system remote
controller (SC) remote controller is
connected to R-Converter unit.
1The indoor unit is not designed for
connecting to R-Converter unit.
2System remote controller (SC)
remote controller is connected to
R-Converter unit.
1Check if the model name of the
indoor unit is listed up on page 2.
2Check if system remote controller
(SC) remote controller is a part of
R-Converter
Converse connection error
1Abnormal if the equation below is
continuously detected for 10
minutes during cooling operation.
Intake temperature - piping
temperature (TH22 or TH23) [
3deg
2Abnormal if the equation below is
continuously detected for 10
minutes during cooling operation.
Indoor main pipe temperature -
gas pipe temperature (TH23) ]
25deg
1Converse connection of extension
pipe between indoor unit and R-
Converter unit
2Converse connection of
communication wire between
indoor unit and R-Converter unit.
3Disconnection of sensor,
No installation or installation
mistakes of sensor
4Shortage or leakage of refrigerant,
Clogged refrigerant circuit
1Check if the connection of
extension pipe is converse.
2Check if the communication wire is
converse.
3Check if sensor is correctly
installed.
4Check piping temperature by test
run.
W Read the technical manual of outdoor unit if codes listed up above are displayed.
OC296--1.qxp 03.6.11 9:37 AM Page 13