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Only for training and service purposes
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Features
Is cold water discharged for
more than 3 minutes ?
Start
Operation mode change
to Heating mode
Operate the unit in cooling mode.
Does test operation start?
Refer to part4, 6 electric part
Yes
No
Yes
Refer to part4, 5 cycle part
No
Is hot water discharged ?
After hot start
Yes
No
Is there any temperature
difference between intake and
discharged water?
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 )
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