SiUS092230EA
Troubleshooting for Outdoor Unit
Part 6 Service Diagnosis
161
7.3 OL
Activation
(Compressor
Overload) or HPS Activation
(High Pressure Switch)
Applicable
Models
RX09/12WMVJU9
Error Code
E5
Method of Error
Detection
A compressor overload is detected through compressor OL.
Abnormality is detected when the contact of the high pressure switch opens.
Error Decision
Conditions
If the error repeats, the system is shut down.
Reset condition: Continuous run for about 60 minutes without any other error
Supposed
Causes
Disconnection of discharge pipe thermistor
Disconnection of indoor or outdoor heat exchanger thermistor
Defective discharge pipe thermistor
Defective indoor or outdoor heat exchanger thermistor
Disconnection of connector S40
Disconnection of 2 terminals of OL (Q1L)
Disconnection of 2 terminals of HPS (S1PH)
Defective OL (Q1L)
Defective HPS (S1PH)
Broken OL and HPS harness
Defective electronic expansion valve or coil
Defective four way valve or coil
Defective outdoor unit PCB
Refrigerant shortage
Water mixed in refrigerant
Defective stop valve
Summary of Contents for RX-W Series
Page 1: ... Applied Models Inverter Pair Heat Pump Service Manual SiUS092230EA Inverter Pair RX W Series ...
Page 207: ...SiUS092230EA Check Part 6 Service Diagnosis 201 15 18 24 class R25105 1 2 3 4 Multimeter ...
Page 209: ...SiUS092230EA Check Part 6 Service Diagnosis 203 15 18 24 class R20704 W V U DC_P1 DC_N1 ...
Page 239: ...SiUS092230EA Piping Diagrams Part 8 Appendix 233 RX24WMVJU9 3D141502 ...