Part 4. Test Run
- 38 -
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Only for training and service purposes
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• Each indoor unit should be tested.
• If the unit has accessory, it should be tested.
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 Part 5.Trouble Shooting
- 4. Gas Charging, 6.Electric Parts
Yes
No
Yes
*Refer to Part 5.Trouble Shooting
- 4. Gas Charging, 5.Cycle Parts
No
Is hot air discharged ?
After Hot Start
Yes
No
Is there any temperature
difference between intake and
discharged air?
Yes
No
Is the operating current
normal ?
Yes
Normal
*Refer to Part 5.Troulbe Shooting
No
* Check the load (In/Out Temp.)
* Check pipe length and amount of
refrigerant
* Check for abnormal sound in
outdoor unit (comp.,Fan, others )
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