Monessen Hearth CDV7 manual Electronic Ignition, YeS

CDVSC7 & CDV7 Series Gas Fireplace troubleshooting

electronic Ignition

START

1.Turn gas supply off.

2.Turn ON/OFF switch to “ON” Power to module (24V Normal)

YES

Is there a spark across ignitor sensor gap?

YES

Turn on gas.

Does pilot burner light?

YES

Does spark stop when pilot is lit?

YES

Does main burner light?

YES

Does system run until ON/OFF switch is in “OFF” position?

YES

END OF TROUBLESHOOTING

	Check: Line voltage (120VAC)
NO	Low voltage transformer (19.5 minimum VAC)
	ON/OFF switch
	Wiring connections
	Unplug ignition lead and
NO	check spark at module
	(24VAC normal).
	Is spark OK?	NO	Replace module
	yeS

A.Check ignition cable ground wiring, ceramic insulator and gap. Correct if necessary.

B.Does ignition cable show signs of melting or buckling? Take protective action to shield cable and boot from excessive temperatures.

	A. Are all manual gas valves open?
NO	Are supply tubing and pressure good?
	Are pilot burner orifies blocked?

B.Check electrical connections between module and pilot operator on gas control.

C.Check for 24VAC across PV-MVPV terminals. If voltage is correct, replace gas control.

If voltage is not correct, replace module.

	NOTE: If module goes into lockout, reset system.
NO	A. Check continuity of ignition cable and ground wire.
	B. Clean flame rod.
	C. Check electrical connections between flame rod and
	module.
	D. Is ceramic flame rod insulator cracked?
	E. Is pilot flame a steady blue? Does flame cover flame rod?
	If not, adjust pilot flame. Replace module if problem
	persists.

A.Check for 24VAC across MV-MVPV terminal. Replace module if there is no voltage.

NO	B. Are electrical connections between module and gas
	control good?
	If connections are good, replace gas control or gas
	control operator.

	NOTE: If module goes into lockout, reset system.
	A. Check continuity of ignition cable and ground wire.
NO	NOTE: If ground is poor or erratic, shutdown may
	occasionally occur even though operation is normal
	at time of checkout.

B.Is pilot flame a steady blue? Does flame cover flame rod? If above checks out, replace module.

52 69D3011