Overheat Protection For Discharge Temperature; Outdoor Unit Display; Led1 Flashes 8 Times; Communication Fault Between Indoor And Outdoor Units - Haier AW09ES2VHB Manual De Servicio

Outdoor Display

LED1 Flashes 8 Times

Turn the unit on. Check the
exhaust temperature of the
compressor.
No
Does the temperature
exceed 230F shortly after the
compressor starts up?
No
Check exhaust temp sensor
resistance. Is it correct?
No
The sensor is faulty,
replace the sensor
Indoor Display
E7
1. Check that the wiring
connections are securely
fastened
2. Check whether the LN wires
are reverse connected
No
Check the outdoor PCB LED
LED
ON/OFF
ON/OFF
ON/OFF
PAGE 36

Overheat Protection for Discharge Temperature

Yes
Yes
Yes

Communication Fault Between Indoor and Outdoor Units

Yes
LED 1 LED 2
OFF ON
ON ON
OFF OFF
ERROR CODES & PROBLEM SOLVING
The power supply is unstable.
There is loss of refrigerant
Check refrigerant charge
The outdoor PCB is faulty, replace
the PCB

LED1 Flashes 15 Times

Correct the wiring between the
indoor and outdoor units
Solution
Outdoor PCB fault
This is caused by Outdoor PCB or Indoor PCB fault. Change
one part firstly, it still unsolved, change another one.
This is caused by Outdoor PCB or Power module fault.
Change one part firstly, if still unsolved change another one.
Spare Parts:
Outdoor PCB
Exhaust sensor
Outdoor Display
Spare Parts:
Indoor PCB
Outdoor PCB
Power module