Vulcan-Hart SG4D Computer Control Models only Symptom Possible Causes, Symptoms Possible Causes

Models: SG4D

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TROUBLESHOOTING

SYMPTOMS

POSSIBLE CAUSES

 

 

Mechanical timer inoperative or not functioning

Interconnecting wiring malfunction.

Line voltage incorrect.

properly.

Timer malfunction.

 

 

 

Component cooling fan does not run.

Motor inoperable.

Interconnecting wiring malfunction.

 

 

 

 

Convection fan motor speed/direction.

 

Poor combustion.

Uneven cooking.

Gas pressure incorrect.

Exhaust vent plugged or obstructed.

 

 

Snorkel vent plugged or obstructed.

 

Air flow baffles missing or damaged.

 

 

 

High ambient temperatures

Intermittent problems.

Wiring connections loose.

 

Cooling fan malfunction.

 

 

No power to temperature controller.

Power/Master switch in OVEN COOL position.

Door or door switch open.

 

 

 

No heat; LED on the controller is flashing.

Probe open or shorted.

 

 

COMPUTER CONTROL MODELS ONLY

SYMPTOM

POSSIBLE CAUSES

 

 

 

High limit switch open.

Oven does not heat.

Probe malfunction.

Control malfunction.

 

 

Power level control set to off.

 

 

High limit thermostat shutting off gas burner.

Probe malfunction.

Control malfunction.

 

 

 

 

Probe malfunction.

Oven not hot enough.

Control range high (rH1) setting to low. See Setup

 

Mode under Computer Controller (SG4C/SG6C).

 

 

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Vulcan-Hart SG4D service manual Computer Control Models only Symptom Possible Causes, Symptoms Possible Causes