23
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Items to be checked after the installation
Table 14
Items to be Checked
Possible Errors
Check Results
Has each part and component of the
unit been installed securely?
The unit may fall off ,vibrate or generate noise.
Has the gas leakage test been taken?
The cooling (heating) capacity may
be poor.
Is the thermal insulation sufficient?
Dews and water drops may be generated.
Does the drainage go well?
Dews and water drops may be generated.
Is the actual power voltage in line with the value marked
on the nameplate?
The unit may break down or some
components may be burnt out.
Are the wiring and piping correct?
The unit may break down or some
components may be burnt out.
Has the unit been earthed reliably?
There may be a danger of electric shock.
Does the wire meet the regulated requirement?
The unit may break down or the components
may be burnt out.
Is there any obstacle at the air inlet/outlet of the indoor/
outdoor unit?
The cooling (heating) capacity may
be poor.
Have the length of the refrigerant pipe and the refrigerant
charge been recorded?
It may be hard to know the exact refrigerant
charge.
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Trial Running
1. Check before the Trial Running
(1) Check if the appearance of the unit and the piping system are damaged during the transportation.
(2) Check if the wiring terminals of the electronic component are secure.
(3) Check if the rotation direction of the fan motor is right.
(4) Check if all valves in the system are fully opened.
2. Trial Running
(1) The trial running should be carried out by the professionally skilled personnel on the premise that all items above
are in normal conditions.
(2) Let the unit energized and switch the wired controller or the remoter controller to “ON”.
(3) The fan motor and compressor of the outdoor unit will run automatically in one minute.
(4) If there is some unusual sound after the compressor is started, turn off the unit for an immediate check.
Summary of Contents for CM2-H16/4DR2
Page 1: ...Service manual FREE MATCH 50Hz R32 Models СM2 H16 4DR2 СM3 H22 4DR2 2022 06 ...
Page 3: ...1 1 Summary and Features Outdoor Unit CM2H 1644A23 CM3H 2228A23 ...
Page 11: ...9 4 Construction Views 4 1 Outdoor Unit CM2H 1644A23 Unit mm ...
Page 12: ...10 CM3H 2228A23 Unit mm ...
Page 27: ...25 8 Exploded Views and Parts List 8 1 Outdoor Unit Model CM2H 1644A23 ...
Page 29: ...27 Model CM3H 2228A23 ...
Page 47: ...41 ...