No cooling
Y
Is the voltage
of the electrical outlet
within the range of AC187
- 253V?
No cooling
Are the water
level lamps on the indication
part all turned off?
N
Is the cooling
selection switch on?
Y
Is
the cold water
temperature indicator on the
FND flashing?
Y
Cold water is not
selected.
N
Cold water sensor
connector is not normal.
Y
Purified water quantity
is short.
Replenish the purified
water.
Turn the cold water
selection switch on.
Check the cold water
sensor connector.
N
When
the compressor is
turned off, is the cold water sensor
resistance value off the
specification?
If the measurement value
is outside the acceptable
error range, the cold
water sensor is faulty.
N
Replace the cold water
sensor.
Y
When
the compressor
is in operation, does the
terminal have a voltage of 220V
and is the current generated
in the range of
0.52~0.72[A]?
If the voltage and current
are normal and the
compressor is stopped,
it is an OLP defect.
Y
Remove the power
cord from the electrical
outlet and replace OLP.
N
In the
compressor operating
condition, is the voltage AC 220V
generated?
The main PCB is
abnormal.
N
Checking and replacing
the main PCB
N
Household power supply
fault.
Check the household
power supply.
Compressor voltage range AC 220V±15%
(AC 187V ~ AC 253V).
Display of thermistor abnormalities
- When the thermistor contact is faulty, the cold water
temperature display flashes.
Sensor resistance per compressor control temperature
1) Compressor stop temperature: 4.5°C Resistance
value±2% (130.351kΩ) automatically turned off 17
minutes after reaching the value
2) Re-operating temperature: 7.3°C Resistance
value±2% (114.042kΩ)
Compressor operating condition
1) Cold water selection switch ON
2) Cold water temperature 7.3°C or higher
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