LG FH6G1BAPK2 Service Manual page 30

If heating does not occur even after water is supplied
( 1)
( 2)
If the water is heated beyond a set temperature
When in "Data View" mode during operation,
is the (DATA_N_3 * 100 + DATA_N_4) value
24.75 kHz or lower?
e.g., DATA_N_3 = 24, DATA_N_4 = 91
Water level frequency of 24.91 kHz
Yes
예
Is the output voltage between the yellow Tab
relay(1) and the black Tab relay(2) of the PCB
Assembly (Main) AC 220V?
(measure heater is on and harness is connected)
Yes
예
Turn the product off, open the cabinet cover,
and check if the resistance between the 2
terminals of the heater is 10–30 Ω
(17–25 Ω when cooled)?
When in "Data View" mode during operation,
is the (DATA_N_5) value at least 10 degrees higher
than the set value?
No
아니오
After you open the cabinet cover and remove the
thermistor connector, is the resistance between
thermistor terminals 2.5 kΩ–180 kΩ?
No
아니오
No
아니오
No
아니오
Yes
예
아니오 No
30
Water supply has not
reached Level 3, which is the
heating start level. Refer to
the Actions in case of any
failure of water supply.
Replace the PWB ASSEMBLY
MAIN.
Replace the HEATER
ASSEMBLY.
Check if the water supply
valve is connected to the
hot water tap; if not, check
the PWB ASSEMBLY MAIN
and replace as necessary.
Check the wiring and replace the
thermistor (AEG33121502).