Package Air Conditioners
5.Trial run
5.1 Preparation for trial run
"
2) All the control wires and cables are connected correctly and safely.
3) All the objects like screws and wires etc that remained in the unit should be cleared after installation.
5.2 Trial run
Switch on power supply and press the ON/OFF button to start operation.
6.Troubleshooting and Maintenance
6.1 Troubleshooting
` "
points before repair:
Failure
Possible cause
Solution
The unit can not
be stared.
1. The power supply does not connect or improper phase
sequence.
1. Connect the power supply
or change two random phase.
2. Electrical leakage of air-conditioning unit causes
tripping of leakage switch.
2. Contact the nearest service
center.
3. The voltage is too low.
3. Contact the dealer
4. The control loop has failure.
4. Contact the nearest service
center.
The unit operates
for a while and
then stops.
1. Air outlet port or intake port of the unit is blocked.
1. Move the obstacles.
2. There is obstacle in front of the condenser.
2. Move the obstacles.
3. The control loop is abnormal.
3. Contact the nearest service
center.
Poor cooling
effect.
[
2. Air outlet port or intake port of indoor unit or outdoor
unit is blocked.
2. Move the obstacles.
3. Too many persons or a heat source in the
Room.
3. If possible, clear heat
sources.
4. Doors or windows are open.
4. Close windows and doors.
5. Refrigerant leakage.
5. Contact the nearest service
center.
6. Some model unit has a High Pressure Switch which
is welded on discharge pipe. When the switch goes into
effect, the power supply of compressor will be shut off.
6. Find and manual reset the
High Pressure Switch which is
welded on discharge pipe.
Note:
After carrying out the check of the above items and taking relevant measures to solve the problems found
but the air-conditioning unit still does not function well, please stop the operation of the unit immediately and
contact the nearest service center. Only ask professional serviceman to check and repair the unit.
