Troubleshooting at the remote control LCD
REMOTE CONTROL
ERROR DETECTION
This is possible only on the wired remote control.
Self-diagnosis
If an error occurs, the following display will be shown.
If "CO" appears in the unit number display,
there is a remote control error.
Refer to the installation instruction sheet
included with the remote control.
(“EE” will appear in the set room temperature display.)
Unit number
Error code
Ex. Self-diagnosis
SU
MO
TU
WE
TH FR
SA
Error
code
Error contents
01
13
26
27
Indoor signal error
00 Wired remote controller abnormal
02 Indoor room temperature sensor error
04
Indoor heat exchanger temperature sensor
(middle) error
28
Indoor heat exchanger temperature sensor (inlet)
error
09 Float switch operated
0c Outdoor discharge pipe temperature sensor error
06
Outdoor heat exchanger temperature sensor
(outlet) error
0A Outdoor temperature sensor error
0E Heat sink thermistor (Inverter) error
15 Compressor temperature sensor error
1d 2-way valve temperature sensor error
1E 3-way valve temperature sensor error
29
Outdoor heat exchanger temperature sensor
(middle) error
2d Heat sink thermistor (P.F.C.) error
20 Indoor manual auto switch abnormal
2A
Power supply frequency detection error
17
IPM protection
18 CT error
1A Compressor location error
1b Outdoor fan error
1F
Connected indoor unit abnormal
1c Outdoor unit computer communication error
2E
Inverter error
12 Indoor fan abnormal
0F
Discharge temperature error
24
Excessive high pressure protection on cooling
2c 4-way valve abnormal
16
Pressure switch abnormal, Pressure sensor abnormal
2b Compressor temperature error
2F Low pressure error
19 Active filter abnormal
2009.01.13 33
25
P.F.C. circuit error
30 Refrigerant circuit address set-up error
31 Master unit, Slave unit set-up error
33 P.F.C. PCB error
32
Connected the indoor number set-up error