Vulcan-Hart GDC24 ML-52581, GDC72 ML-52585 Troubleshooting, Problem, Possible Cause

TROUBLESHOOTING

PROBLEM POSSIBLE CAUSE

Red light won't come on when main switch is on.

Not plugged in.

Problem with On-Off switch. Building circuit breaker tripped. Problem with lamp in switch.

Red light won't go off when Main On-Off or Thermostat Problem with On-Off switch. switch is on.

Cooker fails to heat when Thermostat On-Off switch is on.

Cooker not plugged in.

Problem with Main On-Off switch. Building circuit breaker tripped. Problem with Thermostat On-Off switch. Problem with pilot valve.

Problem with igniter. Problem with flame switch. Loose wiring connections.

Flame switch has not had enough time to heat up.

Igniter stays on too long after pilot flame is established.	Flame switch bulb not hot enough.
	a. Problem with alignment of pilot and flame switch.
	b. Obstructed or wrong size pilot orifice.
	c. Gas pressure too low.
	Problem with flame switch.
Igniter fails to light.	Problem with igniter.
	Cooker not plugged in.
	Building circuit breaker tripped.
	Problem with Main On-Off switch.
	Loose wiring connection.

Pilot does not light after igniter has been on several minutes.

Problem with pilot valve.

Gas supply not purged of air or no gas supply. Loose wiring connection.

Obstructed or wrong size pilot orifice. Pilot adjustment valve closed.

Problem with alignment of pilot and igniter.

Pilot fails to remain lit after igniter goes out. (Pilot may cycle on and off normally several times after cold start-up before the pilot heats up.)

Loose wiring connection.

Obstructed or wrong size pilot orifice. Pilot adjustment valve closed.

Problem with alignment of pilot and flame switch. Problem with flame switch.

Burner doesn't come on; amber light doesn't come on.

Thermostat setting too low. Problem with remote set-pot. Problem with thermistor sensor. Problem with temperature controller. Problem with thermostat gas valve. Loose wiring connection.

— 14 —