48
Common malfunction and handling method for air conditioner with indoor and outdoor unit
Air filters are blocked
Clean the filter
Set the fan speed to high o
medium speed
Fan speed was set too slow
Air circulation
is insufficient
Improper installation location fo
outdoor unit
Outdoor unit should be installed in a place with well
ventilation, and awning should be installed.
Poor cooling (heating) effect
Fan doesn't run whe
FAN mode is set
When unit is cooling o
fan don't run
When unit is cooling o
heating, the compressor
runs but outdoor fa
doesn't run
Filters of indoor unit are
blocked
Clean the filters regularly
Heat exchanger of outdoo
unit is blocked
Clean the dust accumulated on the
surface of the heat exchanger
Leakage occurs between high an
low pressure inside compressor
Replace the compressor
Partial blocka
Replace the capillary
Leakage of refrigerant
Find out the leakage and charge refrigerant
Blockage in one-way valve o
outdoor unit
Replace one-way valve
Burn-out or broken wire of indoor fa
motor
Repair or change the fan motor
Wire according to the circuit diagram
Wrong wiring
Circuit break or damage of fan moto
capacitor
Replace the fan motor capacitor with the
Relay coil is wire-broken
Replace the relay
Poor contact of relay
Replace the relay
Improper setting of temperature
Adjust the set temperature
Replace the fan motor
Breakage of outdoor fan
Wrong wire connection
Wire according to the circuit diagram
Breakage of outdoor fan moto
capacitor
Replace the fan motor capacitor