Installation Manual
35
ENGLISH
14.23 Troubleshooting during test operation
The following is the key part defects
Parts
Symptom
Cause
Check and resolution
Compressor
External
electronic
expansion
valve
Does not operate
Stops during operation
Generates loud noise
during operation
No operation sound
even after turning the
power on
Low pressure error or
discharge error
Motor insulation broken
Strainer clogged
Insufficient lubrication
fluid
Motor insulation broken
Cross connection
Coil defect
Electronic expansion
valve clogged
Measure the resistance between the
compressor power terminal and the chassis.
Replace the strainer.
Open the drain cork and check the lubrication fluid.
Measure the resistance between the
compressor power terminal and the chassis.
Check the compressor power connection.
Check the resistance between the terminals.
EEV checking method
Discharge temperature error
If there is a problem in the system, the error code is displayed in the display window of the indoor unit.
Refer to the repair manual of service technical manual for the problem check and repair
14.24 Precaution when handing over to customer
First explain the user summary attached on the air conditioner to the customer and explain the user
manual so that it is easy to understand. (Parts directly relevant for customer safety, such as
precautions, must be explained.)
Before leaving the site, check for gas or coolant water leakage one more time and provide the
product warranty (completion confirmation, installer business card). Clean the surrounding
environment and wipe any stains that could have resulted from the installation work.
Summary of Contents for AKWW0363UA0
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