Groen CC20-E Operator's Manual page 229

TROUBLESHOOTING
PROBLEM: OVEN TURNS OFF DURING OPERATION - (Continued)
Probable Cause
Gas Ovens
Gas supply turned off or interrupted.
Air in supply line or blockage.
Transformer TR1 could be defective.
Pilot burner not ignited.
7-8
Corrective Action
Close gas supply line and check for cause of gas supply
loss. Correct problem or have problem corrected.
Check supply line. Clear or clean as required.
Turn on unit power and check for 24VAC at transformer
TR1 secondary terminals. If 24VAC is not present, replace
TR1.
Do not attempt to light the pilot burner with a
flame.
Perform the following trial ignition, and look and listen for
spark:
Attempt to ignite the pilot burner. If the pilot burner does
not ignite within 90-seconds after the pilot switch is turned
on, turn off the pilot switch. Wait at least 5 minutes before
attempting to reactivate the pilot switch. Repeat the trial
for ignition. The pilot may require several trials for ignition
to bleed air from the gas piping. After the initial attempt,
the following startups should require only about 2 to 5
seconds to get pilot ignition.
Spark observed. Turn on oven power. Refer to schematic
diagram (page 4-19 or 5-19) and check for 24VAC at ignit-
er module terminals MV-PV and PV.
Be sure to close the building gas supply line
to the oven and place the manual knob on the
main gas valve in the OFF position, before ser-
vicing any gas system components in the oven.
24VAC measured. Turn off oven power and:
• Check for pilot burner orifice blockage. Clean and repair
if necessary.
• Replace main gas valve MGV1. See page 8-54.
Be sure oven is disconnected from branch cir-
cuit power before performing any repair work.
WARNING
WARNING
WARNING
(Revised 1/02)