AISIN SEIKI E1 Series User Manual

171
TROUBLESHOOTING
Error frequen-
cy until error
display
Display
Treatment
Method of diagnosis / repair
Possible major causes Diagnosis / Repair
※1 ※2
1 Error X N Improper wiring Check wiring
1 Error X N Signal wire between indoor and outdoor
units improper wiring
Check signal wire between indoor and
outdoor units
1 Error B N 1. Refrigerant leakage (from flare connec-
tion or welded part)
2. Refrigerant low pressure sensor failure
3. Refrigerant high pressure sensor failure
Refer to P189, 9)Refrigerant Low Pres-
sure Abnormality
2/30 minutes Error A N Inadequate refrigerant Refer to P222, 36)Inspect Refrigerant
Pressure (Inspect Refrigerant Amount)
- Error X N 1. Outdoor unit signal wire connection
failure during operation (disconnected or
loosened)
2. Power for either indoor or outdoor unit is
OFF when the indoor and outdoor units
are connected to separate power
supplies. (Power failure, open phase)
3. Communication failure between indoor
and outdoor units caused by noise or
other effect
4. Outdoor control PCB failure
1. Refer to P198, 1)Check Power Supply
System
2. Check signal wire between indoor and
outdoor units
3. Check wiring path
4. Shield signal wiring between indoor and
outdoor units
5. Inspect or replace outdoor control PCB
1 Error X N 1. Remote controller signal wire contact
failure or disconnection
2. Power of some of the indoor units is OFF,
when one remote controller controls
multiple indoor units.
3. Noise in remote controller wiring
4. Remote controller setting error
5. Remote controller PCB failure
6. Indoor control PCB failure
1. Check for remote controller power
supply and signal wire
2. Refer to P198, 1)Check Power Supply
System
3. Check fuse and transformer
4. Block noise path and shield remote
controller wiring
5. Check remote controller setting
6. Inspect or replace remote controller PCB
7. Inspect or replace indoor control PCB
1 Warning Z N Failure in the external control adapter. Check external control adapter
1 Error B, E N 1. Power supply is OFF during operation.
(Power failure, open phase)
2. Outdoor unit signal wire connection
failure during operation (disconnected or
loosened)
3. Communication failure caused by noise
or other effect
4. Outdoor control PCB failure
1. Refer to P198, 1)Check Power Supply
System
2. Check outdoor signal wire
3. Check wiring path
4. Shield signal wire
5. Inspect or replace outdoor control PCB

AISIN SEIKI E1 Series Specifications

General

Brand	AISIN SEIKI
Model	E1 Series
Category	Air Conditioner
Language	English