Haier AW07LC2VHA Technical Overview page 105

LED1 flashes 8 times
When the temperature compressordischarge temperature is above 230°F
Caution: Be sure to turn power switch off before connecting or disconnecting the
connector, or parts may sustain damage.
Turn on the unit with the remote
control. Measure the temperature at
the exhaust temperature sensor of the
compressor on the outdoor unit.
Does the temperature exceed 230°F?
NO
Malfunctions occur after running
for some time even though the
temperature is running below 230°F.
Pull out the exhaust sensor and
measure its resistance at standard
temperatures according to the
resistance temperature table
Is there a deviation in the results?
NO
The outdoor mainboard is damaged and
must be replaced.
FLOW CHARTS
The refrigerant may have leaked during
YES
installation or there may be leakage in
the piping system. There may be other
causes for the overly high exhaust
temperature.
The sensor is damaged and must be
YES
replaced.
REFERENCES PAGE 105