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
Содержание ERF-310A
Страница 3: ...2 EXTERNAL DRAWINGS 1 ERF 310M 340M 370M 2 ERF 310A 340A 370A 3...
Страница 4: ...4 3 WIRING DIAGRAMS 1 ERF 310M 340M 370M 2 ERF 310A 340A 370A...
Страница 7: ...6 REFRIGERANT CYCLE DIA 8...
Страница 8: ......
Страница 13: ...10 EXPLODE DRAWINGS 13 1 ERF 310M ERF 340M ERF 370M...
Страница 14: ...14 Explode drawings...
Страница 15: ...15 2 ERF 310A ERF 340A ERF 370A Explode drawings...
Страница 16: ...Explode drawings 16...
Страница 23: ...Pcb Control Functions 23...
Страница 24: ...Pcb Control Functions 24...
Страница 25: ...Pcb Control Functions 25...
Страница 26: ...13 MAIN PCB DIA 26...