52
328 080000 01
Specifications subject to change without notice.
7. ODU Fan Motor can not operate
Table 24—Troubleshooting
POSSIBLE CAUSES
DISCRIMINATING METHOD (AIR CONDITIONER STATUS)
TROUBLESHOOTNG
Wrong wire connection, or poor
connection
Check the wiring status according to circuit diagram
Connect wires according to wiring diagram to make sure all
wiring terminals are connected firmly
Capacity of the ODU fan motor is
damaged
Measure the capacity of fan capacitor with an universal meter and find
that the capacity is out of the deviation range indicated on the
nameplate of fan capacitor.
Replace the capacity of fan
Power voltage is a little low or
high
Use universal meter to measure the power supply voltage. The voltage is
a little high or low
Suggest to equip with voltage regulator
Motor of outdoor unit is damaged
When unit is on, cooling/heating performance is bad and ODU
compressor generates a lot of noise and heat.
Change compressor oil and refrigerant. If no better, replace
the compressor with a new one
8. Compressor does not operate
Table 25—Troubleshooting
POSSIBLE CAUSES
DISCRIMINATING METHOD (AIR CONDITIONER STATUS)
TROUBLESHOOTNG
Wrong wire connection, or poor
connection
Check the wiring status according to circuit diagram
Connect wires according to wiring diagram to make sure all
wiring terminals are connected firmly
Capacity of compressor is damaged
Measure the capacity of fan capacitor with an universal meter and find
that the capacity is out of the deviation range indicated on the
nameplate of fan capacitor.
Replace the compressor capacitor
Power voltage is a little low or
high
Use universal meter to measure the power supply voltage. The voltage is
a little high or low
Suggest to equip with voltage regulator
Coil of compressor is burnt out
Use universal meter to measure the resistance between
compressor terminals and it's 0
Repair or replace compressor
Cylinder of compressor is blocked
Compressor can not operate
Repair or replace compressor
9. Air conditioner is leaking
Table 26—Troubleshooting
POSSIBLE CAUSES
DISCRIMINATING METHOD (AIR CONDITIONER STATUS)
TROUBLESHOOTNG
Drain pipe is blocked
Water leaking from indoor unit
Eliminate the foreign objects inside the drain pipe
Drain pipe is broken
Water leaking from drain pipe
Replace drain pipe
Wrapping is not tight
Water leaking from the pipe connection place of indoor unit
Wrap it again and bundle it tightly
10. Abnormal sound and vibration
Table 27—Troubleshooting
POSSIBLE CAUSES
DISCRIMINATING METHOD (AIR CONDITIONER STATUS)
TROUBLESHOOTNG
When turn on or turn off the unit, the
panel and other parts expand and
there is an abnormal sound
There's the sound of "PAPA"zd
Normal phenomenon. Abnormal sound disappears after a few
minutes.
When turn on or turn off the unit,
there's abnormal sound due to flow
of refrigerant inside air conditioner
Water-running sound can be heard
Normal phenomenon. Abnormal sound disappears after a few
minutes.
Foreign objects inside the indoor unit
or there are parts touching together
inside the indoor unit
There's abnormal sound fro indoor unit
Remove foreign objects. Adjust all parts' position of indoor
unit, tighten screws and stick damping plaster between
connected parts
Foreign objects inside the outdoor
unit or there are parts touching
together inside the outdoor unit
There's abnormal sound fro outdoor unit
Remove foreign objects. Adjust all parts' position of outdoor
unit, tighten screws and stick damping plaster between
connected parts
Short circuit inside the magnetic coil During heating, the way valve has abnormal electromagnetic sound
Replace magnetic coil
Abnormal shake of compressor
Outdoor unit gives out abnormal sound
Adjust the support foot mat of compressor, tighten the bolts
Abnormal sound inside the
compressor
Abnormal sound inside the compressor
If add too much refrigerant during maintenance, reduce
refrigerant properly. Replace compressor for other
circumstances.
