27
14. TROUBLE SHOOTING
CONFIRMATION PROCEDURE ON REFRIGERANT INSUFFICIENT
LAMP OFF COMP OFF Power receptable Power failure
power plug Connection is not good Adjust
connectors Housing connector bad assy, with URT, terminals bent Adjust
FAN ON COMP OFF Comp Short circuit on coil Replace comp
PTC relay Bad connection, bad assembled Adjust
running capacitor (R/C) Bad connection, bad assembled Adjust
LAMP OFF COMP ON Component Lamp broken or bad assy replace it
Door switch Door switch broken or bad assy Adjust
FAN OFF COMP ON Component Fan motor broken, fan obstruction replace it
connectors Housing connector bad assy, with URT, terminals bent Adjust
DEFROST PROBLEMS Heater Component broken replace it
fuse broken (find broke down reason) replace it
d-sensor/bi-metal incorrect open/close temperature replace it
connectors Housing connectors bad assy, with URT, terminals bent adjust
M-pcb htr relay broken replace it
Timer timer broken or bad connection Adjust
UNDERCOOLING Temperature control The control button setting is not proper set temp
closing/opening door Closing/opening door is too frequent, or door is open close door
Food storage conditions Excesive storage Arrange
Hot food has been stored Prevent this
Food location Food close outlet air ducts Reorganizate food
Location setting Ref is located under direct sun light or heat. Move it
Surrounding is blocked (no gap between walls) Move it
Electric problems Compressor, sensor, thermostat problems General inspection
Air circulation Air ducts obstruction Clean and repair
Fan Fan broken or obstructed Replace it
Refrigerant Low charge Recharge
Gas leak Repair/recharge
Lamp Lamp always on because door switch problems Adjust
OVER COOLING Temperature control The control button setting is not proper set temp
Food location The wet food is placed in front of the outlet of the duct Reorganizate food
R-sensor,thermostat Componet broken or disadjusted replace
Chilled case (Chilled case has 0ºC under specification)
SYMPTOM CHECK POINT CAUSE ACTION
Complete leaking Remove louver a and b. No frost will be produced at the inlet of evaporator after - Check for a
passing approximately 4 minute operation of the comp leakage after
vacuumming
Refrigerant insuficient 1) Frost condition: frost condition in the inlet pipe is extremely different from the - Inject proper
outlet pipe. amount of
2) Measurement of the temperature: When the inside temperature is stable, a refrigerant
5ºC temperature difference occurs between the inlet pipe and the outlet pipe.
SYMPTOM DECISION REPAIRS
1. TROUBLE SHOOTING PROCEDURE OF THE BREAKDOWN
To Previous Page
Loading...
