Haier HF-346KAME, Service Manual

12

2The refrigerator is not sufficiently cold.

Refrigerant leaks.

Small amount of refrigerant
leakage causes partial
freezing of the evaportaor
with frost forming in only
about half the area.

Over-charged refrigerant.

Faulty compressor.

The cycle is clogged.It is
clogged by welding.It is
clogged by foreign material in
the cycle.

Moisture in the cycle is frozen
at the inlet of the capillary

tube and evaporates after
circulating.

Clogged moisture

Cause of trouble

Indication

Thermostat in faulty
condition

YES

-- There is frost on the suction pipe.

-- The temperature of the compressor dome is high.

-- The cooling state of the evaporator is not effective.

-- The condensor is cold.

-- The refrigerator is not cold at all.

-- The condensor is at high temperature.

YES

-- There is almost no difference in temperature
between the suction and discharge pipes.

-- The condensor temperature is almost the same
as the environment temperature.

-- The temperature of compressor is high.

-- Evaporatol does not get cold.

-- The condensor is cold.

-- The evaporator does not get cold.

YES

YES

-- This cycle is repeated.

-- The condensor also gets warm,and then gets
cold as the evoporator gets warm.

-- The evaporator is partially cooled,and then gets
warm again.

--Is the sealing of the gasket in good condition?

--Is the temperature control knob in a suitable position?

-- Are there excessive storage foods in the refrigerator,causing
interference with the circulation of cold air.

-- Are there any hot foodstuffs in the refrigerator?

-- Is the condition of the condensors radiation satisfactory?

-- Is the refrigerator installed a sufficient distance from any direct

heat source?

-- Does the compressor operate?

Check point

       Does evaporator
 get cold,when thermostat
 is by-passed in the circuit?

YES

YES

YES

Check point

Temperature characteristics of
clogged moisture.

Recharge the refrigerant after

welding the area where

refrigerant leaked.

Recharge the refrigerant.

Repair as required after
checking the clogged area.

Repair as required after
checking the clogged area.

Melt the frozen inner moisture
by applying heat to the
evaporator and capillaty tube

with soldering iron.

Instruction(diagnosis)

Replace the thermostat

YES

YES

Cause of trouble

Maintenance Service and Trouble Shooting