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NR-BU303 / BU343
5. TROUBLESHOOTING GUIDE
Cause : Not cool at all or not enough
Does the compressor
operating?
Does the fan motor
operating?
Check the ice at the
evaporator.
Does any oil leak out?
Plug out to stop the
compressor and
check gas spout out
by cutting cap tube
around 35 mm. from
dryer.
Check the start
control circuit.
NO
NO
YES
YES
YES
YES
NO
NO
YES
No ice
or only at the inlet
NO
It’s very few ice
YES
Use
method
Gas spout out at both side
Gas spout out at dryer side only
Gas spout out at evaporator side only
Check pressure of the
motor compressor by
ohmmeter.
Rip/Burn coil.
Check oil color of the
compressor.
(Clean the pipe according
to guidance)
Check the fan
motor circuit.
Clogged moisture.
Gas leakage.
Check the gas
smell.
Defect compressor
Clogged in the cap
tube system at the
evaporator side.
Clogged in the cap
tube system at the
dryer side.
Cutting cap tube
out of the dryer
side.
Technical Guide
Order No.
TECH091119TG
Compressor ‘s
rotor lock.
Replace the defect of
electric part.
(Capacity, Thermostat,
PTC Relay and Protection)
Check oil color of the
compressor.
(Clean the pipe according
to guidance)
Replace the compressor.
Replace the fan motor.
Cannot repair.
Check oil color of the
compressor.
(Clean the pipe according
to guidance)
Replace the compressor.
Содержание NR-BU303MNHK
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