Component Testing; Refrigerator & Freezer Door Switches - KitchenAid KBFA20ER Technical Education

Before testing any of the components, perform
the following checks:
• The most common cause for control failure
is corrosion on connectors. Therefore, dis-
connecting and reconnecting wires will be
necessary throughout test procedures.
• All tests/checks should be made with a
VOM or DVM having a sensitivity of 20,000
ohms-per-volt DC, or greater.
Disconnect power before servicing.
Replace all parts and panels before operating.
Failure to do so can result in death or electrical shock.
REFRIGERATOR & FREEZER
DOOR SWITCHES
C
NC
Refrigerator
Door Switch
Refer to pages 4-2 or 4-10 for the procedures
for accessing the refrigerator and freezer door
switches.
1. Unplug refrigerator or disconnect power.
2. Disconnect the wires from the door switch
terminals.
3. Set the ohmmeter to the R x 1 scale.

COMPONENT TESTING

Electrical Shock Hazard
C
NO
NC
Freezer
Door Switch
• Check all connections before replacing
components, looking for broken or loose
wires, failed terminals, or wires not pressed
into connectors far enough.
• Resistance checks must be made with
power cord unplugged from outlet, and
with wiring harness or connectors discon-
nected.
4. Refrigerator Door Switch: Touch the
ohmmeter test leads to the C and NC
door switch terminals. The meter should
indicate a closed circuit (0 Ω). Press the
actuator arm and the meter should indicate
an open circuit (infinite).
5. Freezer Door Switch: Touch the ohm-
meter test leads to the indicated terminals.
The meter should indicate as follows:
a) C and NC = closed circuit (0 Ω).
b) C and NO = open circuit (infinite)
c) Press the actuator arm and the meter
indications in steps 5a and 5b should
change states.
5-1