Codes And Description; Problem Symptoms And Measures - Haier HSU-12HEB03 - annexe 1 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
Check Item
Check the power supply.
Check the indoor PCB
Diagnosis by service port
pressure and operating
current.
Check the installation
condition.
44
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.
Codes and description