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3.4.2 Trial Run
Step 1: Run test can begin after completing the installation;
Step 2: All wiring and piping should be connected well and carefully checked, then start
circulating the water before power is switched on;
Step 3: Empty all air within the water circulation pipes, then press the “on-off” button on the
control panel to run the unit at the temperature setting;
Step 4: Items that need to be checked during the commissioning test:
① Check that unit current is normal per nameplate specifications;
② Check that each button on the control panel functions normally;
③ Check that the screen is displaying information normally and that there are no error codes;
④ Check for any water leaks in the circulation system;
⑤ Check that the Condensate drain is not obstructed;
⑥ Check for any abnormal sounds or vibrations?
⑦ Check that heat pump shuts off on a water flow error as soon as the water pump is turned off
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