Ballu KFR-28GW/BP Series, Service Manual

Page: 38 / 70

8. TROUBLESHOOTING
37
12 Malfunction of IPM power
module
13 Incorrect outdoor
E
2
PROM data
14 Outdoor air circulation
temperature sensor in
trouble
b. KFR-2601 GW/BPx2E
Code
Description of Trouble Cause of Trouble
1 Room temperature sensor abnormal Thermistor short-circuited or open circuited
2 Heat exchanger temperature sensor
abnormal Thermistor short-circuited or open circuited
3 Heat exchanger frozen
4 Heat exchanger overheated
5 Communication in trouble
8 Indoor fan in trouble
1 Outdoor ambient temperature sensor
abnormal Thermistor short-circuited or open circuited
2 Abnormal temperature sensor of the
outdoor heat exchanger Thermistor short-circuited or open circuited
3 Compressor overheated Thermistor short-circuited or open circuited, or
compressor overheated
4 Outdoor capillary tube A temperature
sensor in trouble Thermistor short-circuited or open circuited
5 Outdoor capillary tube B temperature
sensor in trouble Thermistor short-circuited or open circuited
6 Overcurrent Too large electric current in the outdoor unit
7 No load Compressor not connected or the module damaged
8 Supply voltage abnormal Too high or too low supply voltage
9 Instantaneous interruption of power
10 Outdoor overloaded in cooling cycle
11 Defrost run is undergoing
12 Malfunction of IPM power module
13 Incorrect outdoor E
2
PROM data
14 Outdoor air circulation temperature
sensor in trouble
IPM power module overheated