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1. Precautions Before Commissioning
1.1
Is the machine adequately installed?
1.2
Is the wiring and pipe correct?
1.3
Whether the water pipelines are empty or not?
1.4
Whether the heat insulation has been perfected?
1.5
Is the ground wire connected reliably?
1.6
Whether the power supply voltage matches the rated voltage of the machine?
1.7
Is there any obstacle in the air inlet and outlet of the machine?
1.8
Is the safety valve installed correctly?
1.9
Whether the leakage protector can operate effectively?
1.10 The system water pressure is not less than 0.15 MPa, and the maximum pressure cannot
exceed 0.5 MPa;
1.11 In winter, the machine needs to be energized at least 24 hours before the operation, as the
compressor needs to be preheated.
2. Commissioning
Use the controller to control the machine and check the following items according to the
instruction manual: (If there is any fault, please find out the faults and reasons described in the
manual and eliminate them)
2.1
Is the controller regular?
2.2
Is the function key of the controller regular?
2.3
Is the drainage normal?
2.4
Test whether the heating mode and cooling mode are working correctly;
2.5
Is the outlet water temperature average?
2.6
Whether there is vibration and abnormal sound during operation?
2.7
Does the generated wind, noise, and condensate affect neighbours?
2.8
Is there a refrigerant leakage?
3. Operation and Debugging
3.1
About 3mins of protection
Due to the self-protection of the compressor, the machine cannot be restarted again within
3 mins.
3.2
Feature of heating operation
If the ambient temperature is too high during operation, the outdoor motor may run low or
stop.
3.3
In the case of heating operation, when the unit has frost formation, the defrosting procedure
(about 2-8 minutes) is automatically performed to improve the heating effect. The outdoor
motor stops running during the "defrost" operation.
Commissioning and Maintenance
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