Haier H-MRV AF092FCBHA, Service Manual

Page: 190 / 200

6.
Models with wired controller
Models with wireless remote controller
Readout: E8 /
Description: Transmission error between wire controller and indoor unit mainboard
No
Yes
No
Note: CN15 and CN17 of AE series should be
short connected.
Yes
No
7.
Models with wired controller
Models with wireless remote controller
Readout: N/A 10 flashes
Description: PG failure in the fan of indoor unit
Yes
No
Yes
Yes
No
Replace the fan.
Check if the wire controller is
properly connected to A, B and C
of indoor unit.
Reconnect
Check if the voltage between A and B is
+12VDC?
Check if the voltage between C and B
changes regularly?
Replace indoor
unit mainboard
Replace the wire
controller
Check if the fan is properly
connected to the mainboard.
Check if PIN 3 and 1 of CN2 (color
models) or CN8 (regular models) are up to
DC 5V.
Replace the indoor unit
mainboard.
Check if there is pulse output
from PIN2 and 1 of CN2 or
CN8.
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