Test Run - LG HM031M Engineering Product Data Book

8. Test Run

• Before starting operation, pre-check points are described in this chapter.
8.1 Test run flow chart
START
Operate the unit in heating mode.
Does Test operation start?
Yes
Is cold water discharged for
more than 3 minutes ?
Yes
Is there any temperature
difference between intake and
discharged water?
Yes
Operation mode change
to Heating mode
Is hot water discharged ?
Yes
Normal
No
Check whether the power cable and
communication cable are completely connected
No
* Check the load (In/Out Temp.)
* Check pipe length and amount of
refrigerant
* Check for abnormal sound in
No
outdoor unit (comp.,Fan, others )
* Refer to Troubleshooting Guide
No
Air-to-Water Heat Pump
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