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PROBLEM PROBABLE CAUSES CORRECTIVE ACTION
A. Failed 24VAC (blower) relay.
Test: Check for 24VAC on Pin 4
of 15-pin connector.
A. If voltage is present, replace
relay.
Burner will not light;
trouble light is NOT
on, blower is NOT
running.
B. Failed controller. B. Replace controller.
A. Failed blower centrifugal switch.
Test: Check for 24VAC at bottom
24VAC terminal of ignition
module (wire 7C).
A. If voltage is not present, replace
blower.
Burner will not light;
trouble light is ON,
blower is running
continuously.
B. Failed ignition module or gas
valve.
Test: Check for 24VAC output
from module to gas valve, and for
high voltage spark from module to
ignitor.
B. If either is not present, replace
the module.
If both are present, replace the
gas valve.
A. Dirty blower inlet and fan. A. Clean blower.
B. Vent tube on gas valve is clogged,
causing high burner gas pressure.
B. Remove and clean vent tube.
C. Cracked/broken ceramic tiles in
burner.
C. Replace burner.
Burner produces
popping sound when
lighting.
D. Failed ignitor. D. Replace ignitor.
A. Controller not turned on. A. Turn on controller.
B. Cooker power cord not plugged in.
B. Plug power cord into appropriate
outlet.
C. Main circuit breaker tripped. C. Reset main circuit breaker.
D. Failed transformer.
Test: Check for 24VAC on
transformer secondary.
D. If voltage is incorrect, replace
transformer.
Controller display is
blank.
E. Failed controller. E. Replace controller.
A. Operator error.
Test: Verify correct cook time is
programmed. Press START
button.
A. Demonstrate proper operating
procedure to operator.
Controller does not
count down.
B. Failed controller.
Test: Verify correct cook time is
programmed. Press the START
button.
B. If timer does not count down,
replace controller.