Freezing Failure - Kenmore RFP74KB Series Service Manual

9. How To Service
9-2. Freezing failure . (Foods are not frozen / cold.)
Any error code
on Front PCB?
Does Comp.
F-Fan & C-Fan
work ok?
Temp-Fuse is ok?
(on the evaporator)
Defrost heater
Ice formation on Eva.
To avoid risk of electrical shock that can cause death or severe personal injury,
WARNING
!
disconnect unit from power before servicing unless tests require power.
Start
N
work?
Y
N
Y
Y
Is ok?
Y
is ok?
Y
Y
N
Change OLP/PTC
F-Fan & C-Fan
motor is ok?
Y
Wiring connection
is ok?
N
N
N
Defrost heater : 200W (≒ 66Ω)
(Left & Right side of Evaporator)
N
25
Refer to error display
in operation and function
Y
OLP/PTC
is OK?
N
N
Change the
defective motor
Y
Change Main PCB
Check lead wire
Change Temp-Fuse
※ Left & Right side of evaporator
Change the
Defrost heater.
Check ice formation on Eva.
and if refrigerant leak
is found, repair it.
Change the
Comp.
29 / 59