A.O. Smith HW 610 warranty CHECKING HONEYWELL S8600H OR S-8610M INTERMITTENT IGNITION CONTROLS

CHECKING HONEYWELL S8600H OR S-8610M

INTERMITTENT IGNITION CONTROLS

SPARK AT PILOT BURNER BUT PILOT WILL NOT LIGHT

Attach wires firmly.

Replace gas valve.

Turn on power supply.

Securely connect

cable and/or ground

wire.

Replace pilot burner and/or ground wire.

NO

Ensure all manual shutoff valves are fully open; all filters are clean; all gas connections are gas tight; pilot tubing is not damaged, obstructed or kinked; and pilot orifice is unclogged. Check for air in gas line, purge (bleed) line if necessary.

			YES
NO
	Are the wires securely attached to the pilot operator on the gas
	control and to the PV & MV/PV terminals on the ignition module?
			YES
	Install a pressure gauge in the pilot tubing line between the
NO	gas control and the pilot burner assembly. Ensure that the pilot
	adjustment screw (under cap) is adjusted to a position that will
	permit gas to flow.
	Is pilot gas flowing during ignition attempt?
			YES
		Turn off power supply.
			YES
NO	Is ignition cable firmly plugged into pilot assembly and module?
	Is ground wire firmly attached to pilot assembly and GND
	terminal on module?
			YES

Are ignition cable and ground wire in good condition (not brittle, burnt, or cracked)?

Carefully bend down- wards top of ground strap to achieve 1/8” spark gap.

NO

YES

Ensure ground strap is the closest metal to the igniter/sensor rod (electrode) to prevent the spark from shorting out to other metal parts (pilot screen, pilot shield, etc.).

Ignition cable must not touch metal surfaces or current carrying wires.

Is there a 1/8” gap between ground strap and electrode?

Replace pilot burner.

Replace ignition

module.

		YES
NO
	Is ceramic insulator surrounding the electrode in good
	condition (not cracked or broken)?
		YES
NO
	Is there excessive draft conditions that may cause pilot
	burner ignition problems?
		YES

Correct draft problems in a manner that would ensure adequate combustion and ventilation air and proper pilot burner performance.

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