23
HEATING WITHOUT WATER
Water level frequency 252 or more?
Water level frequency between
230~245~?
Replace the sensor
(pressure)
YES
NO
Checking voltage between two
[Yellow(RD), Black(YL)]pins as press
the power button is the voltage
220 - 240V~ in without water condition
Replace the PWB
assembly
YES
DRAIN MALFUNCTIONING
Is the drain hose twisted or frozen?
Repair drain hose
NO
YES
Is the impeller of the drain pump clogged?
Remove foreign
material.
NO
YES
Is the connector disconnected,
disassembled?
Is the coil of drain pump cut-off?
(resistance of coil is 90~160Ω )
When checking voltage between
connectors ( , ) on spinning, is the
voltage 220 - 240V~ as the figure?
Replace the pump
assembly
Replace the PWB
assembly (Main)
Reconnect or repair the
connector
NO
NO
YES
NO
YES
1
2
AC 220~240V
PWB ASSEMBLY (MAIN)
PWB ASSEMBLY (MAIN)
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