LG TD-C70070E Service Manual page 25

DIAGOSTIC TEST
10
Test 5 Pump check
Trouble Symptom : Check if pump is out of order. " Empty water" signals.
Measurement condition : Power cord is unplugged.
YL3
1 2 3
Check the hose blocked with foreign body or twist.
(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 YL3 disconnected from
Controller,
YL3 ① - YL3 ② resistance
ranges 205±10Ω ?
YES
• Check Pump sensor
• Check and replace Controller
- TR3
24
• Disassemble Pump
⇨
- Check foreign objects
Y ES
- Check impeller
restriction
- Check connection hose
clogged
• Check or replace pump
• Check Harness
⇨
connection
N O