SiUS12-928_A
Troubleshooting
Service Diagnosis
116
5.11 OL Activation (Compressor Overload)
Remote
Controller
Display
E5
Outdoor Unit LED
Display
A
1
4
2
1
3
4
4
1
Method of
Malfunction
Detection
A compressor overload is detected through compressor OL.
Malfunction
Decision
Conditions
If the error repeats twice, the system is shut down.
Reset condition: Continuous run for about 60 minutes without any other error
∗
The operating temperature condition is not specified.
Supposed
Causes
Refrigerant shortage
Defective four
-
way valve
Defective outdoor unit PCB
Water mixed in refrigerant
Defective electronic expansion valve
Defective stop valve
Troubleshooting
Check No.04
Refer to P.150
Check No.05
Refer to P.151
Check No.06
Refer to P.152
Check No.11
Refer to P.155
(R7137)
Caution
YES
Malfunctioning
∗
Discharge pipe thermistor
NO
Functioning
Functioning
Malfunctioning
∗
Refrigerant shortage
∗
Four way valve
∗
Water mixed
∗
Stop valve
Malfunctioning
Functioning
Malfunctioning
Functioning
Insert the thermistor in
position.
Replace the discharge pipe
thermistor.
Replace the electronic
expansion valve or the coil.
Refer to the refrigerant line
check procedure.
Replace the outdoor unit
PCB.
Replace the four way valve
or the coil.
Replace the outdoor unit
PCB.
Discharge
pipe thermistor
disconnected?
Check No. 06
Check the thermistors.
Check No. 05
Check the four way
valve.
Check No. 11
Check the refrigerant
line.
Check No. 04
Check the electronic
expansion valve.
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Summary of Contents for SUPER MULTI NX G Series
Page 1: ...SiUS12 928_A Applied Models Inverter Multi Heat Pump G Series J Series...
Page 7: ...SiUS12 928_A Table of Contents vi...
Page 10: ...SiUS12 928_A 1 List of Functions Part 1 List of Functions 1 Functions 3...
Page 11: ...SiUS12 928_A List of Functions 2...
Page 17: ...SiUS12 928_A Specifications 8...
Page 23: ...SiUS12 928_A Specifications Specifications 14...
Page 25: ...SiUS12 928_A Printed Circuit Board Connector Wiring Diagram 16...
Page 37: ...SiUS12 928_A Function and Control 28...
Page 69: ...SiUS12 928_A Control Specification Function and Control 60...
Page 71: ...SiUS12 928_A Operation Manual 62...
Page 73: ...SiUS12 928_A Duct Free System Operation Manual 64 2 Duct Free System 2 1 Remote Controller...
Page 84: ...Duct Free System SiUS12 928_A 75 Operation Manual...
Page 85: ...SiUS12 928_A Duct Free System Operation Manual 76 2 8 TIMER Operation...
Page 86: ...Duct Free System SiUS12 928_A 77 Operation Manual...
Page 87: ...SiUS12 928_A Duct Free System Operation Manual 78 2 9 Note for Multi System...
Page 88: ...Duct Free System SiUS12 928_A 79 Operation Manual...
Page 97: ...SiUS12 928_A Slim Duct Built In System Operation Manual 88...
Page 99: ...SiUS12 928_A Service Diagnosis 90...
Page 169: ...SiUS12 928_A Removal Procedure 160...
Page 225: ...SiUS12 928_A Trial Operation and Field Settings 216...
Page 235: ...SiUS12 928_A Appendix 226...