ERROR CODES & PROBLEM SOLVING
PAGE 36
ENGLISH
Overheat Protection for Discharge Temperature
Outdoor Display
LED1 Flashes 8 Times
Spare Parts:
Outdoor PCB
Exhaust sensor
Turn the unit on. Check the
exhaust temperature of the
compressor.
The power supply is unstable.
There is loss of refrigerant
Check refrigerant charge
The outdoor PCB is faulty, replace
the PCB
Does the temperature
exceed 230F shortly after the
compressor starts up?
Check exhaust temp sensor
resistance. Is it correct?
The sensor is faulty,
replace the sensor
No
No
No
Yes
Yes
Yes
Communication Fault Between Indoor and Outdoor Units
Indoor Display Outdoor Display
E7
LED1 Flashes 15 Times
Spare Parts:
Indoor PCB
Outdoor PCB
Power module
Correct the wiring between the
indoor and outdoor units
1. Check that the wiring
connections are securely
fastened
2. Check whether the LN wires
are reverse connected
Check the outdoor PCB LED
No
Yes
LED LED 1 LED 2 Solution
ON/OFF OFF ON Outdoor PCB fault
ON/OFF ON ON
This is caused by Outdoor PCB or Indoor PCB fault. Change
one part rstly, it still unsolved, change another one.
ON/OFF OFF OFF
This is caused by Outdoor PCB or Power module fault.
Change one part rstly, if still unsolved change another one.
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