LG LFC20770SB Service Manual page 44

4) Abnormal Defrost Sensor (D)
No Checking flow
Check for loose connection in CON7
1
1-. Unplug connector from CON7.
2
2-. Check resistance value between
wires orange to orange .
1-. Remove Rails and Cover of
3
Evaporator.
2-. Check loose connection on
connector of Defrost controller
assembly .
Result & SVC Action
Result
Firmly plugged
Loose
Result
7.15~ 86K Ù
Other Value
0Ù or open
NOTE 1: Be sure that resistance value measurement
match with real Evaporator temperature (Refer to D -
Sensor chart). Else, consider it as "Other Value"
Condition.
Result
Firmly plugged
Loose
- 43 -
SVC Action
Go to step 2
Plug firmly, then check again. Problem
persist?
YES: go to step 2
NO: explain to customer.
SVC Action
Replace Main PCB (See NOTE1)
Replace Defrost Controller Assembly..
Go to step #3
SVC Action
Go to step 4
Plug firmly, then check again. Problem
persist?
YES: go to step 4
NO: explain to customer.