APPEARANCE, PORTION, PARTS SEEMED WRONG
check the power supply
check the electric continuity by tester [see g. 1]
METHOD OF CHECK TROUBLESHOOTING
POWER SUPPLY
FUSE CF3 (250V T5A)
check the electric continuity by tester [see g. 1]FUSE CF1 (250V T25A)
Discharge
temperature Error
check the service valve and refrigerant circuit (pipe)
check the resistance by tester [see table 1]
check the resistance by tester [see table 2]
CT disconnection
protective action
against excess
current AC current
detection
check the power voltage (230V)
GAS LEAKAGE
check the place of installation (blockage of air inlet & outlet )
check the excess gas
UNREASONABLE OPERATION
UNDER OVERLOAD
PCB (CONTROLLER)
DROP OF POWER VOLTAGE
MOMENTARY STOP OF POWER
(IN CASE OF LIGHTNING)
A1
A3
A4
DC voltage Error
FUSE CF4 (250V T3.15A)
FAN MOTOR
A0
POWER MODULE
take o the terminals (orange and blue) and check the resistance between
orange-blue if the resistance is over 100kΩ, POWER MODULE is normal
POWER SUPPLY check the power supply
(*1) When checking fan motor and/or pump, turn o the power supply completely and touch their terminal or connector
take o the connector 9 , and check the resistance between red-black
in the connector if the resistance is over 100kΩ, FAN MOTER is normal
SENSOR, TEMP. SUCTION
SENSOR, TEMP. DISCHARGE
abnormal revolution
of compressor
A5
POWER MODULE
protective action
against excess
current DC current
detection
check the place of installation (blockage of air inlet & outlet )
check the excess gas
check the power voltage (230V)
UNREASONABLE OPERATION
UNDER OVERLOAD
DROP OF POWER VOLTAGE
FUSE CF2 (250V T15A)
other than described above
check the electric continuity FUSE CF2 (250V T15A) by tester
A2
POWER MODULE
COMPRESSOR
operate without the junction connector of compressor lead wire
check the place of installation (blockage of air inlet & outlet )
check the excess gas
check the power voltage (230V)
UNREASONABLE OPERATION
UNDER OVERLOAD
DROP OF POWER VOLTAGE
FUSE CF2 (250V T15A)
check the electric continuity FUSE CF2 (250V T15A) by tester
COMPRESSOR other than described above
check the resistance of POWER MODULE by tester
take off the junction connector of compressor lead wire
measure resistance between the connector pins of junction connector, six
times between white-black, black-red, red-white respectively by changing
the polarity
if all the figures show over 100kΩ, POWER MODULE is normal
conrm the power supply.
if CF3 is blown, it should be replaced and check if there is a short-circuit at a connector
of the 4-way valve coil, the heater for tank, or the circulation pump. [see g 4,5,6]
if a short-circuit is found, the parts should be replaced.
if CF1 is blown, PCB(CONTROLLER) should be replaced and check the resistances
between pink-gray and orange-blue in the connector of POWER MODULE. [see g 7]
if these values are below 100kΩ , POWER MODULE should be replaced.
collect refrigerant once, then recharge with prescribed mass.
SENSOR, TEMP. SUCTION should be replaced.
SENSOR, TEMP. DEFROST should be replaced.
PCB(CONTROLLER) should be replaced.
ensure the installation position to avoid blockage of air inlet & outlet.
conrm the power supply voltage. (230V)
restart operation.
if excess gas is observed, collect all refrigerant once, then recharge with
prescribed mass.
if these values are below 100kΩ, POWER MODULE should be replaced.
if FAN MOTOR is abnormal, it should be replaced. and check the electric continuty
fuse CF4 by tester . [see g 2]
if CF4 is blown
, it should be replaced.
conrm the power supply.
ensure the installation position to avoid blockage of air inlet & outlet.
if excess gas is observed, collect all refrigerant once, then recharge with
prescribed mass.
COMPRESSOR should be replaced.
if CF2 is blown, PCB(CONTROLLER) should be replaced.
COMPRESSOR should be replaced.
if the same error code appears again, POWER MODULE should be replaced.
conrm the power supply voltage. (230V)
ensure the installation position to avoid blockage of air inlet & outlet.
if excess gas is observed, collect all refrigerant once, then recharge with
prescribed mass.
conrm the power supply voltage (230V)
if any of these values is below 100kΩ, POWER MODULE should be replaced.
if CF2 is blown, POWER MODULE and PCB(CONTROLLER) should be replaced.
ERROR
CODES
UNIT
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