Si33-105
Troubleshooting R407C PLUS Series Heat Recovery System 137
Part 5
Part 5Part 5
Part 5
Troubleshooting
TroubleshootingTroubleshooting
Troubleshooting
R407C PLUS Series
R407C PLUS SeriesR407C PLUS Series
R407C PLUS Series
Heat Recovery System
Heat Recovery SystemHeat Recovery System
Heat Recovery System
1. Operation Flowcharts..........................................................................139
1.1 Indoor Unit Operation Flowchart ..........................................................139
2. Troubleshooting by Remote Controller ...............................................144
2.1 The INSPECTION / TEST Button.........................................................144
2.2 Self-diagnosis by Wired Remote Controller .........................................145
2.3 Self-diagnosis by Wireless Remote Controller.....................................146
2.4 Operation of The Remote Controller’s Inspection /
Test Operation Button .........................................................................150
2.5 Remote Controller Service Mode .........................................................151
2.6 Remote Controller Self-Diagnosis Function .........................................153
3. Troubleshooting ..................................................................................157
3.1 Indoor Unit: Error of External Protection Device ..................................157
3.2 Indoor Unit: PC Board Defect...............................................................158
3.3 Indoor Unit: Malfunction of Drain Level Control System (33H).............159
3.4 Indoor Unit: Fan Motor (M1F) Lock, Overload......................................160
3.5 Indoor Unit: Malfunction of Swing Flap Motor (M1S)............................161
3.6 Indoor Unit: Malfunction of Moving Part of
Electronic Expansion Valve (Y1E)........................................................162
3.7 Indoor Unit: Drain Level above Limit ....................................................163
3.8 Indoor Unit: Malfunction of Capacity Determination Device.................164
3.9 Indoor Unit: Malfunction of Thermistor (R2T) for Liquid Pipe...............165
3.10 Indoor Unit: Malfunction of Thermistor (R3T) for Gas Pipes ................166
3.11 Indoor Unit: Malfunction of Thermistor (R1T) for Air Inlet.....................167
3.12 Indoor Unit: Malfunction of Thermostat Sensor
in Remote Controller ............................................................................168
3.13 Outdoor Unit: Actuation of Safety Device.............................................169
3.14 Outdoor Unit: PC Board Defect............................................................170
3.15 Outdoor Unit: Actuation of High Pressure Switch.................................171
3.16 Outdoor Unit: Actuation of Low Pressure Sensor.................................172
3.17 Outdoor Unit: Malfunction of Moving Part of
Electronic Expansion Valve (Y1E)........................................................173
3.18 Outdoor Unit: Abnormal Discharge Pipe Temperature.........................174
3.19 Outdoor Unit: Malfunction of Thermistor for Outdoor Air (R1T)............175
3.20 Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R3T)...........176
3.21 Outdoor Unit: Malfunction of Thermistor (R6T) for Suction Pipe..........177
3.22 Outdoor Unit: Malfunction of Thermistor (R2T) for Heat Exchanger ....178
3.23 Outdoor Unit: Malfunction of Discharge Pipe Pressure Sensor ...........179
3.24 Outdoor Unit: Malfunction of Low Pressure Sensor .............................180
3.25 Low Pressure Drop Due to Refrigerant Shortage or
Electronic Expansion Valve Failure......................................................181
3.26 Reverse Phase, Open Phase...............................................................182
3.27 Malfunction of Transmission Between Indoor Units .............................183