Haier HSU12XCK Service Manual page 33

E4 Indoor EEPROM error: Replace the PCB of indoor unit
E14 :Indoor fan motor malfunction
Notes:
When the unit is on ,don't pull out or insert the terminal of the motor (CN9), or else
The motor would be damaged.
whether terminal CN8
and CN9 on indoor PCB
well inserted or not?
Electrify the machine again and turn it on in the cooling
operation
Measure whether there is voltage 60VAC-115VAC
between the red wire and the black wire of Terminal CN9
on the indoor mainboard.
Check whether motor can run when turn on the unit
When fan motor is running Measure whether there is
voltage pulse between the middle wire and the black side
wire of Terminal CN8 on the indoor mainboard.
the indoor mainboard is damaged and need replace
HSU09/12XCK-SM
YES
YES
YES
YES
31
NO
Pull out and reinsert the terminals
NO
the indoor mainboard is damaged and need replace
NO
the indoor motor is damaged and need replace
NO
the motor of the indoor unit is damaged and need
replace
Codes and Description
DomesticAirConditioner