Chapter 4. Maintenance and troubleshooting
Shenzhen INVT Network Technology Co., Ltd. 17
Chapter 4. Maintenance and Troubleshooting
The good or bad performance and long life of the unit have an important relationship with
your maintenance of the unit. Please check the outdoor unit regularly and maintain it promptly
after problems arise.
Note
1) Equipment maintenance must be done by professional operators.
2) Except for the items that need to be commissioned with electricity, the power of the
indoor unit must be cut off and the air switch of the outdoor unit must be disconnected
during maintenance.
3) When troubleshooting, if you encounter a fault that cannot be judged, please consult the
company's technical staff in time.
4.1 Maintenance
4.1.1 Cooling system
1) Check whether the refrigeration piping is solid. Otherwise, a fastening object should be
used so that the refrigeration piping does not vibrate with the wall, floor or equipment
frame.
2) Carefully check all cooling pipes and fittings for oil stains to ensure there are no leaks.
4.1.2 Heat exchanger
1) Clean the heat exchanger fins and coils regularly.
2) If the outdoor unit heat exchanger fins are dirty and blocked, we should be cleaned with
compressed air or fin cleaning agent (weak alkaline). When using compressed air to
clean the fins, the blowing direction should be in the reverse airflow direction.
3) Check whether the fins are inverted or damaged, and maintain them in time if they are.
4) Snow accumulation should be avoided in winter to affect the air intake of the outdoor
unit.
4.1.3 Fan
Observe whether the fan runs normally and whether there is any abnormal noise, vibration,
bearing seizure and other problems.
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