Haier HSU12XHK, Service Manual

Page: 35 / 71

HSU09/12XHK-SM Codes and Description
Domestic Air Conditioner
32
7.Codes and Description
7.1.Problem Symptoms and Measures
Symptom Check Item Details of Measure
Check the power supply
Check to make sure that the rated
voltage is supplied.
None of the units
operates
Check the indoor PCB
Check to make sure that the indoor PCB
is broken
Equipment operates
but does not cool, or
does not heat (only for
heat pump)
Diagnosis by service port
pressure and operating
current.
Check for insufficient gas.
Large operating noise
and vibrations
Check the installation
condition.
Check to make sure that the required
spaces for installation (specified in the
Technical Guide, etc.) are provided.
7.2 Error Codes and Description indoor display
Code indication
indoor
Description
Reference
Page
E1 Room temperature sensor failure 32
E2 Heat-exchange sensor failure 32
3 3 r o r r e M O R P E E r o o d n I 4 E
Indoor
Malfunction
E14 Indoor fan motor malfunction 33
The code indication that is listed above is the main fault
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector, or else parts damage may be
occurred.
E1: Room temperature sensor failure CN6
E2: Heat-exchange sensor failure CN6