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2-5. Defrosting failure
Causes
Checks
Measures
Remarks
Problems
No defrosting
Heater does not generate heat as
the heating wire is cut or the circuit
is shorted.
1) Heating wire is damaged when
inserting into the evaporator.
2) Lead wire of heater is cut.
3) Heating wire at lead wire contacts
is cut.
Sucking duct and discharging hole
are clogged:
1. Impurities.
2. Ice.
Gap between Sucking duct and
Heater plata(Ice in the gap).
Wrong heater rating (or wrong
assambly).
1. Check the resistance of heater,
0_: Short. ,,_2: Cut.
Tens to thousands ._: OK.
2. Check the resistance between
housing terminal and heater
surface.
O_: Short. _:
Cut.
Tens to thousands Q: Short.
1. Confirm foreign materials.
In case i
of ice, insert the copper line
through the hole to check.
2. Put hot water into the drain
(check drains outside).
1. Confirm in the Sucking duct.
1. Check heater label.
2. Confirm the capacity after
substituting the resistance value
into the formula.
p= V 2 (V: Rated voltageof user country)
R
(R: Reslstance of tester[_])
--
Compare P and ]avel capacity.
Tolerance: +7%
Heating wire is short and wire is cut,
• Parts replacement:
Refer to parts
explanations,
1) Push out impurities by inserting
copper wire.(Turn
off more than
3hours and pour in hot water if
frost is severe.)
2) Put in hot water to melt down frost.
3) Check the water outlet.
4) Push the heater plate to sucking
duct manually and assemble
the
disconnected parts.
1) Turn off the power, confirm
impurities and ice in the gap, and
supply hot water until the ice in the
gap melts down.
2) Push the Heater plate to drain
bottom with hand and assemble
the disconnected
parts.
Faults: replace.
- How to replace: Refer to main parts
Seal the lead wire with
insulation
tape and heat
contraction
tube if the cut
lead wire is accessible
to
repair.
F.
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