YMGI
•
Your Modern Green Idea
55
Trial run
1.
Before test operation, make sure unit is powered on and compressor has been preheated for more than 8
hours. Touch the unit to check if it is normally preheated. Start test operation after unit is preheated. It if does
not preheat, the compressor might be damaged. Debugging must be performed by professional technicians or
under the guide of professional technicians.
Fig.57
2.
When debugging starts, system will operate according to the ambient temperature.
a. When outdoor temperature is above 20ºC (68°F), debugging shall be in cooling mode.
b. When outdoor temperature is below 20ºC (68°F), debugging shall be in heating mode.
3.
Before debugging, confirm again whether the cut-off valve of each basic module is fully turned on.
4.
During debugging, front panel of the outdoor unit must be fully closed; otherwise, debugging accuracy will be
affected (see below).
Fig.58
5.
Before debugging, make sure the needed amount of refrigerant has been added to the pipe or at least
70% of the needed refrigerant has been added.
6.
Description of each stage of debugging progress:
