LG TD-C70040E, Service Manual, Page: 26 / 44

25
DIAGOSTIC TEST
11
Test 5 Pump check
Measurement condition :
Trouble Symptom : Check if pump is out of order. " Empty water" Error signals.
YES
NO
YES
NO
1 2
YL2
(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 - YL 2 resistance
ranges 205
±
10Ω ?
• Check Pump sensor
• Check and replace Controller
- TR3
• Disassemble Pump
- Check foreign objects
- Check impeller
restriction
- Check connection hose
clogged
• Check or replace pump
• Check Harness
connection