THERMA V Split Type
9. Installation
22
Hydro Box Unit
9.6 Test Run
• Before starting operation, pre-check points are described in this chapter.
9.6.1 Test run flow chart
Is water discharged for
more than 3 minutes ?
START
Operation mode change
to Heating mode
Operate the unit in cooling mode.
Does Test operation start?
Yes
No
Check whether the power cable and
communication cable are completely connected
Yes
No
Is hot water discharged ?
Yes
No
No
Is there any temperature
difference between intake and
discharged water?
Yes
Normal
Q Check the load (In/Out Temp.)
Q Check pipe length and amount of
refrigerant
Q
Q Refer to Troubleshooting Guide
Check for abnormal sound in
outdoor unit (comp.,Fan, others )
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