Vulcan-Hart VGCTS16 Service Manual page 26

ROUND COUNTERTOP TILTING BRAISING PANS (16 GALLON) Gas and Electric - TROUBLESHOOTING
SYMPTOM
Burner will not light.
Burner will not stay lit.
HSI heats up, but burner will not light.
F24643 (1217)
1. Gas not on.
2. Pan not down to close limit switch.
3. Unit not properly grounded, and/or polarity of incoming power is
incorrect.
4. Low incoming gas pressure.
5. Gas solenoid valve malfunction.
6. HSI not operating. See HOT SURFACE IGNITOR (Gas Model).
7. Ignition module not receiving power.
A. Check transformer for 24VAC output to module.
B. High limit thermostat remains open.
C. Temperature controller or potentiometer malfunction. See
TEMPERATURE CONTROLLER AND POTENTIOMETER TEST
(Gas Model).
8. Ignition module malfunction.
1. Gas pressure low. See MANIFOLD PRESSURE ADJUSTMENT (Gas
Model).
2. Check position of flame sense probe. See FLAME SENSE PROBE
(Gas Model).
3. Flame sense probe malfunction.
4. Ignition module malfunction.
5. Check gas orifice for obstruction.
1. Gas supply is off.
2. Gas solenoid valve malfunction.
3. Ignition module malfunction.
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POSSIBLE CAUSES