Aisin YOSHI AWS E1J TWIN, Installation Manual, Page: 54 / 60

54
The table below shows all the error codes displayed on the remote controller fitted in the AWS
control panel. In case of malfunction contact the AISIN Authorised Service Centre that usually
maintains the GHP outdoor unit.
R/C
AWS
Blinking indication
(ON doesn’t blink)
(OFF led off)
Error
code Led
ON/OFF
TEST
Disp.
Unit
No.
GHP
outdoor
unit
display
Type of failure Possible cause
A0 X X X 63-n External input
•
External protection input signal stops the unit
•
Remote controller local setting failure
A1 X X X 20-n
Indoor unit
PC board
•
PC board defective
•
EEPROM setting error
A3 X X X 95-n
Drain lines
-
AWS flow switch
•
Direct Expansion version – indoor unit drain pump
malfunction .
•
AWS version – flow switch or antifreeze thermostat
switched off.
A6 X X X 15-n
Indoor unit fan
motor
•
Fan motor blocked
•
Harness disconnection
A7 ON X X 35-n
Indoor unit swing
flap motor
•
Swing flap motor malfunction
•
Cam mechanism failure
A9 X X X 21-n
Indoor unit
PC board
•
LEV malfunction
•
Harness disconnection
AF ON OFF X 30-n Drain pipe
•
Improper drain piping installation (inverse draft)
•
Pipe clogged
AH ON OFF X 31-n
Air cleaning
device
•
Indoor unit circuit boar malfunction
•
Air cleaning device failure (optional)
AJ X X X 22-n Capacity setting
•
Capacity setting failure
•
Missing capacity setting adapter (replacement of PCB)
C4 X X X 18-n
•
Heat exchanger temperature sensor failure
•
Improper harness connection
C5 X X X 19-n
•
Gas pipe temperature sensor failure
•
Improper harness connection
C9 X X X 97-n
•
Direct Expansion version - Intake air temperature sensor
failure
•
AWS version – Resistors group failure
•
Improper harness connection
CA X X X 98-n
Indoor unit
temperature
sensors
•
Exhaust air temperature sensor failure
•
Improper harness connection
CJ ON OFF X 17-n
R/C temperature
sensor
•
R/C temperature sensor failure
•
Improper harness connection
U3 X X X - Test run
•
Test run operation
U4 X X X - Communication
•
Outdoor unit power supply OFF
•
Outdoor unit – indoor unit transmission error
X X X 1-n Communication
•
Duplicating main remote controller connection
•
Transmission error
U5
OFF ON OFF -
•
Remote controller PC board failure
•
Remote controller setting failure
U8 X X OFF -
Remote
controller
PC board
•
Transmission error between main and sub remote
controller
U9 X X X - Communication
•
Transmission error between two indoor units
•
Transmission error between outdoor and indoor unit
UC ON ON ON 36-n
•
Address duplication of central remote controller
•
Air-net address duplication of indoor units
UE X X X 23-n
Central remote
controller •
Transmission error between indoor unit and central
remote controller
UF X X X 24-n
•
Communication error between indoor and outdoor unit
•
Improper wiring
UH X X X -
Communication
•
Indoor unit address setting failure
X X X 40-0
∼
2
•
EEPROM failure or program failure
E1
X X X 84-3,4
Outdoor unit
PC board
•
Outdoor unit PC board malfunction
•
Transmission error between microcomputer
E3 X X X 86-0 •
Refrigerant High pressure alarm
E4 X X X 88-0
Operation failure
•
Refrigerant Low pressure alarm
E7 X OFF X
86-10
∼
23
Outdoor unit fan
•
Heat exchanger fan (1,2,3) failure
•
DCBL board failure
EA X X X 57-0 4-way valve
•
4-way valve failure
•
Harness disconnection
EC X X X 80-0 Operation failure
•
Engine coolant overheating (temperature >105°C)
EH X X X
80-10
∼
30
Engine coolant
pump
•
Engine coolant pump failure
•
DCBL board failure