Codes And Description; Problem Symptoms And Measures - Haier HSU-22LEA03 Service Manual

7.Codes and Description

7.1.Problem Symptoms and Measures

Symptom Check Item
Check the power supply.
None of the
units operates
Check the indoor PCB
Equipment
operates but
Diagnosis
does not cool,
port
or does not
operating current.
heat (only for
heat pump)
Large
operating Check the installation
noise and condition.
vibrations
HSU-22L/HEA03
Check to make sure that the rated voltage is
supplied.
Check to make sure that the indoor PCB is
broken
by service
pressure and
Check for insufficient gas.
Check to make sure that the required spaces
for installation (specified in the Technical Guide,
etc.) are provided.
Details of Measure
47
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Codes and description
Reference
page
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