Raypak 0042B, 0066B, 0180B manual 10Defective ignition module or defective gas valve

10)Defective ignition module or defective gas valve.

10)Before module goes into a lock-out, check voltage across MV and MV/ PV. If no 24V is present, replace module. If 24V is present, replace gas valve.

3)Pilot Outage.	1) Too low or too high gas pressures.		1)	Adjust inlet gas pressure as shown
(Standing pilot models)				on rating plate.
	2)	Restricted pilot.	2)	Clean pilot orifice.
	3)	Weak thermocouple.	3)	Replace thermocouple.
4)Yellow lazy flame.	1) Too low gas pressure.		1) Adjust manifold pressure as shown
				on rating plate.
	2)	Restricted burner intake ports.	2)	Clean burners free of debris or in-
				sects.
	3)	Restricted gas line.	3)	Clean gas line or increase gas line
				piping.
5)Sooting	1) Insufficient combustion air.		1) Refer to installation instructions re-
				garding combustion air require-
				ments.
	2)	Improper venting.	2)	Refer to installations instructions.
	3)	Severe yellow burner flames.	3)	See yellow flame section above.

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