Daikin SUPER MULTI NX G Series Service Manual

SiUS12-928_B Troubleshooting for Outdoor Unit
Service Diagnosis 166
6.7 OL Activation (Compressor Overload)
Remote
Controller
Display
E5
Outdoor Unit LED
Display
A 5 1 4 2 3 3 4 4 3
Method of
Malfunction
Detection
A compressor overload is detected through compressor OL.
Malfunction
Decision
Conditions
 If the error repeats, 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
 Defective discharge pipe thermistor
 Defective outdoor electronic expansion valve or coil
 Defective four way valve or coil
 Defective outdoor unit PCB
 Refrigerant shortage
 Water mixed in refrigerant
 Defective stop valve
Troubleshooting
Check No.01
Refer to P.191
Check No.12
Refer to P.194
Check No.13
Refer to P.195
Check No.14
Refer to P.195
(R14438)
Caution
YES
NG
* Discharge pipe thermistor
NO
OK
OK
NG
NG
OK
NG
OK
* Refrigerant shortage
* Water mixed
* Stop valve
Insert the thermistor in
position.
Replace the discharge pipe
thermistor.
Replace the outdoor
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. 01
Check the thermistors.
Check No. 13
Check the four-way valve.
Check No. 14
Check the refrigerant line.
Check No. 12
Check the outdoor electronic
expansion valve coil.
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.

Daikin SUPER MULTI NX G Series Specifications

General

Brand	Daikin
Model	SUPER MULTI NX G Series
Category	Air Conditioner
Language	English