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SEQUENCE OF OPERATION GCCO-PP/PT
Oven plugged in.
120 VAC across “A” and “B” of 24 pin terminal block.
120 VAC across Common on light relay.
120 VAC across Common on cooling fan relay.
120 VAC to control transformer (120 / 24-12) and Component transformer (120 / 24).
Power switched to “ON” position.
24 VAC across JP1 and “C”.
24 VAC across “TH” and ground on spark module.
24 VAC across “PV” and ground on spark module.
24 VAC across “PV” on combination valve.
Pilot valve opens.
Pilot ignites.
Pilot confirmed.
12-13 micro-amps from “SENSE” on spark module.
24 VAC across “MV” on spark module.
Product selected.
24 VAC across JP12 and “C”.
24 VAC across motor relay coil.
Motor relay closes.
120 VAC to motor.
Motor starts.
24 VAC across “MV” to ground on spark module.
24 VAC across JP 2 to “C”.
24 VAC to “MV” on combination valve (through centrifical switch on motor).
Main valve opens.
Main burner ignites.
Back up toggle switch to “ON”.
24 VAC to “TH” on spark module.
24 VAC across “PV” on spark module to ground.
24 VAC to “PV” on combination valve.
Pilot valve opens.
Pilot ignites.
Pilot confirmed.
12-13 micro-amps from “SENSE” on spark module.
24 VAC across “MV” on spark module.
24 VAC to motor relay.
Motor relay closes.
120 VAC to motor.
Motor Starts.
24 VAC across “MV” to ground on spark module.
24 VAC across JP 2 to “C”.
24 VAC to “MV” on combination valve (through centrifical switch on motor).
Main valve opens.
Main burner ignites.
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