Whirlpool KRFC704FSS - Page 32

For Service Technician Use Only
DIAGNOSTICS
1-28
n
French-Door Boom Mount Refrigerator

Remove dispenser UI and locate Dispenser heater wiring connector (2 wire connector, 1 red, 1 white).

• Disconnect the 2 Pin Connector (Figure 8).
• Take resistance reading on side leading to visible heater
(Dispenser Heater). Reading should be ≈108 ohms.
• Take resistance reading on other side of connector (IM Duct
Heater--Door). Reading should be ≈108 ohms.

• Ensure LED display shows “on”
• If LED display does not show “on”, replace Dispenser UI.
If all checks are OK and problems persist:

• Use up or down arrow to change acvaon mode to “01”
• Press the “Icemaker2” key to conrm selecon.

The Mullion heater resistance can be checked at mulple points. The easiest is under the le hinge cover, or at the heater itself.

Check the resistance of the Mullion Heater. Reading
should be ≈17 ohms.

• Ensure LED display shows “on”
• If LED display does not show “on”, replace Eyebrow UI.
If all checks are OK and problems persist:

• Use up or down arrow to change acvaon mode to “01”
• Press the “Icemaker2” key to conrm selecon.
J8-2
Dispenser UI
Pin 2
WH
+12.7 VDC
WH
Pin 1
J8-1
Neutral
RD RD
IM Duct
Heater
Dispenser
Heater
2 Pin Connector
behind Dispenser UI
at Mullion Heater
2 Pin Connector
J2-3
Eyebrow UI
Pin 2
YL
+ 14 VDC
WH
Pin 1
J2-4
Neutral
BK/YL RD
Mullion
Heater
Pin 1 in 1P
Pin 2Pin 2
YL YL
BK/YL BK/YL
2 Pin Connector
Left Hinge Cover behind Dispeser UI
4 Pin Connector