Installation Guide

W415-1698 / 12.20.16
18
EN
4.3 HIGH LIMIT SWITCH TESTING
Unplug the appliance
(if hardwired, turn off circuit breaker)
Leave appliance turned off for 15-20 minutes
for the appliance to cool down
NOTE: THIS ENSURES THE HIGH
LIMIT SWITCH HAS COOLED
DOWN AND RESET
Inspect wires to and from the high limit
switch to ensure there are no damaged
or disconnected wires
If the appliance is shutting off constantly 8-10 sec
after heater button is pushed, the high limit
switch and/or circuit is open
Inspect wires # 2, 4, 5, 6, and 11.
Refer to the wiring diagram
Ensure there are no frayed
or damaged wires
Keep the negative probe on AC-N / AC-
N1 terminal of the PCB and place the
positive probe on the right terminal of the
high limit switch (Figure 28)
START HERE
YES
YES
NO
NO
YES
NO
Are there any broken
connectors or wires?
Place negative probe on AC-N / AC-N1
terminal of the PCB (Figure 26)
Set the multimeter to read AC voltage
Place the positive probe on the left terminal
of the high limit switch (Figure 27)
Is the voltage reading
approximately 120V AC?
Is the voltage reading
approximately 120V AC?
Check power supply
for 120V
Defective high limit
switch. Refer to
section 5.12
(High Limit Switch,
Heater, and Blower
Replacement)
Replace wire harness
Refer to section 6.7 (Wire
Harness Replacement)
Replace wire harness
Refer to section 6.7 (Wire
Harness Replacement)