Service Diagnosis; Problem Symptoms And Measures; Error Codes And Description Indoor Display - Haier HSU18VCK Service Manual

7. Codes and Description

7.1. Problem Symptoms and Measures

Symptom
None of the
units operates
Equipment
operates but
does not cool,
or does not
heat (only for
heat pump)
Large
operating
noise and
vibrations

7.2 Error Codes and Description indoor display

Indoor Malfunction
The code indication that is listed above is the main fault
Trouble shooting
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
E2: Heat-exchange sensor failure
HSU18VCK-SM
Check Item
Check the power supply.
Check the indoor PCB
Diagnosis by service
port pressure and
operating current.
Check the installation
condition.
Code indication
indoor
E1
E2
E4
E14
Details of Measure
Check to make sure that the rated voltage is
supplied.
Check to make sure that the indoor PCB is
broken
Check for insufficient gas.
Check to make sure that the required spaces
for installation (specified in the Technical Guide,
etc.) are provided.
Description
Room temperature sensor failure
Heat-exchange sensor failure
Indoor EEPROM error
Indoor fan motor malfunction
CN1
CN1
29
Codes and Description
DomesticAirConditioner