SYMPTOMS POSSIBLE CAUSES
Excessive or low heat.
1. Temperature probe malfunction on models
HGC5/5X. (Thermostat malfunction on models
DGC5)
2. Temperature control board malfunction.
3. Gas pressure Insufficient.
4. Gas orifice plugged or obstructed.
Mechanical Timer inoperative or not functioning properly.
1. Interconnecting wiring malfunction.
2. Line voltage incorrect.
3. Timer malfunction.
Cook mode OK, no Hold mode. (Cook & Hold models
only).
1. Cook and Hold switch (S3) malfunction.
2. R2 hold relay malfunction.
3. Cook & Hold timer malfunction.
4. Interconnecting wiring malfunction.
Component cooling Fan does not run.
1. Motor inoperable.
2. Interconnecting wiring malfunction.
Uneven Cooking.
1. Convection Fan motor speed/direction.
2. Poor combustion.
A. Gas pressure incorrect.
B. Exhaust vent plugged or obstructed.
C. Snorkel Vent plugged or obstructed.
3. Air flow Baffles missing or damaged.
Intermittent problems.
1. High ambient temperatures.
2. Wiring connections loose.
3. Cooling fan malfunction.
No power to temperature control.
1. Power switch (S1) in “Cool Down”.
2. Door or door switch open.
COMPUTER CONTROL MODELS ONLY
SYMPTOM POSSIBLE CAUSES
Oven does not heat.
1. High limit switch open.
2. Probe malfunction.
3. Control malfunction.
High limit thermostat shutting off gas burner.
1. Probe malfunction.
2. Control malfunction.
VC4G & VC6G SERIES FULL SIZE CONVECTION OVENS - TROUBLESHOOTING
F24682 Rev. C (0315) Page 72 of 74
