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Only for training and service purposes
Part 3 Test Run
Is cold air discharged for
more than 3 minutes ?
START
Test operation for indoor unit
Operation mode change
to Heating mode
Operate the unit in cooling mode.
Does Test operation start?
Refer to part4, Section 7: Electronic
Troubleshooting Guide
Yes
No
Yes
Refer to part4, Section 5: Cycle
Troubleshooting Guide
No
Is hot air discharged ?
After Hot Start
NOTE: When outdoor temperature is low, the unit is operated in heating
mode during the test run procedure.
Yes
No
Is there any temperature
difference between intake and
discharged air?
Yes
No
Is the operating current
normal ?
Yes
Normal
Refer to Troubleshooting
Guide
No
* Check the load (In/Out Temp.)
* Check pipe length and amount of
refrigerant
* Check for abnormal sound in
outdoor unit (comp.,Fan, others )
2. Test Run Flow chart