For Service Technician Use Only
DIAGNOSTICS
French-Door Bottom Mount Refrigerator
n
1-25
FC Defrost Troubleshooting
Diagnostics has several Service Tests to aid in troubleshooting the FC Defrost system.
Run Service Test 04 - FC Evaporator Thermistor
•
Ensure none of the thermistors are Open “OP” or Shorted
“SH”. Replace any faulty thermistors.
Check Heater and Thermal Fuse Resistance
•
Test resistance between GF2 board, P2-7 and P1-2
•
Resistance should be approximately 29 ohms.
If Circuit is Open:
•
Access FC Evaporator section and check for open Defrost
Heater, or Thermal Fuse(s).
If Circuit is OK:
Run Service Test 89 - Run FC Defrost Heater
•
Test for 115 VAC power at GF2 board, P2-7
If 115 VAC is not present:
•
Replace GF2 board
If 115 VAC is present:
Check for and repair, loose or damaged wiring or connectors.
If all functional components of FC Defrost system check fine,
check for a secondary cause of the problem, such as:
•
Bad FC Door Switch (Service Test 75)
•
Bad FC Evaporator Fan (Service Test 56)
•
Air leak into the FC
If Necessary, Run Service Test 91 -- Forced Defrost
Run Service Test 91 and select ON. Press the “Icemaker2” key
to confirm your selection. A defrost cycle will begin after exiting
Diagnostics.
6 Pin Conector
FC Evaporator Area
Top Right Side
Pin 1
Single Pin Connector
FC Evaporator Area
Top
P1-2
GF2 Board
Pin 3
Pin 1
WH/BK
115 VAC
WH/BK
YL
Pin 2
P2-7
Neutral
PK
PK
YL
Thermal Fuse
Thermal Fuse
FC
Defrost
Heater
Single Pin Connector
FC Evaporator Area
Top
