LG TD-C7014 series Service Manual page 25

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