Hyundai HRP-S09WH Service Manual page 75

Troubleshooting Troubleshooting
4. ODU Fan Motor Can't Operate
Possible Causes
Wrong wire connection, or poor
connection
Capacity of the ODU fan motor
is damaged
Power voltage is a little low or
high
Motor of outdoor unit is
damaged
5. Compressor Can't Operate
Possible Causes
Wrong wire connection, or poor
connection
Capacity of compressor is
damaged
Power voltage is a little low or
high
Coil of compressor is burnt out
Cylinder of compressor is
blocked
6. Air Conditioner is Leaking
Possible Causes
Drain pipe is blocked
Drain pipe is broken
Wrapping is not tight
7. Abnormal Sound and Vibration
Possible Causes
When turn on or turn off the unit,
the panel and other parts will
expand and there's abnormal
sound
When turn on or turn off the
unit, there's abnormal sound
due to fl ow of refrigerant inside
airconditioner
Foreign objects inside the
indoor unit or there're parts
touching together inside the
indoor unit
Foreign objects inside the
outdoor unit or there're parts
touching together inside the
outdoor unit
Short circuit inside the magnetic
coil
Abnormal shake of compressor Outdoor unit gives out abnormal sound
Abnormal sound inside the
compressor
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Discriminating Method (Air conditioner Status)
Check the wiring status according to circuit
diagram
Measure the capacity of fan capacitor with an
universal meter and fnd that the capacity is out of
the deviation range indicated on the nameplate of
fan capacitor.
Use universal meter to measure the power supply
voltage. The voltage is a little high or low
When unit is on, cooling/heating performance is
bad and ODU compressor generates a lot of noise
and heat.
Discriminating Method (Air conditioner Status)
Check the wiring status according to circuit
diagram
Measure the capacity of fan capacitor with an
universal meter and fnd that the capacity is out of
the deviation range indicated on the nameplate of
fan capacitor.
Use universal meter to measure the power supply
voltage. The voltage is a little high or low
Use universal meter to measure the resistance
between compressor terminals and it's 0
Compressor can't operate
Discriminating Method (Air conditioner Status)
Water leaking from indoor unit
Water leaking from drain pipe
Water leaking from the pipe connection place of
indoor unit
Discriminating Method (Air conditioner Status)
There's the sound of "PAPA"
Water-running sound can be heard
There's abnormal sound fro indoor unit
There's abnormal sound fro outdoor unit
During heating, the way valve has abnormal
electromagnetic sound
Abnormal sound inside the compressor
Troubleshooting
Connect wires according to wiring diagram to
make sure all wiring terminals are connected
fi rml
Replace the capacity of fan
Suggest to equip with voltage regulator
Change compressor oil and refrigerant. If no
better, replace the compressor with a new
one
Troubleshooting
Connect wires according to wiring diagram to
make sure all wiring terminals are connected
fi rml
Replace the compressor capacitor
Suggest to equip with voltage regulator
Repair or replace compressor
Repair or replace compressor
Troubleshooting
Eliminate the foreign objects inside the drain
pipe
Replace drain pipe
Wrap it again and bundle it tightly
Troubleshooting
Normal phenomenon. Abnormal sound will
disappear after a few minutes.
Normal phenomenon. Abnormal sound will
disappear after a few minutes.
Remove foreign objects. Adjust all parts'
position of indoor unit, tighten screws and
stick damping plaster between connected
parts
Remove foreign objects. Adjust all parts'
position of outdoor unit, tighten screws and
stick damping plaster between connected
parts
Replace magnetic coil
Adjust the support foot mat of compressor,
tighten the bolts
If add too much refrigerant during
maintenance, please reduce refrigerant
properly. Replace compressor for other
circumstances.