LG TD-C70040E Service Manual page 26

DIAGOSTIC TEST
11
Test 5 Pump check
Trouble Symptom : Check if pump is out of order. " Empty water" Error signals.
Measurement condition :
YL2
1
(Measure with power on)
On QC test mode, when Pump
is on,
Electric noise doesn't occur
Electric noise doesn't occur
while pumping?
(Measure after power is off.)
With YL2 disconnected from
Controller,
YL 2
2
ranges 205 10Ω ?
• Check Pump sensor
• Check and replace Controller
- TR3
NO
- YL 2 resistance
YES
25
• Disassemble Pump
- Check foreign objects
YES
- Check impeller
restriction
- Check connection hose
clogged
• Check or replace pump
• Check Harness
connection
NO