A.O. Smith HW 610 warranty Mv & Mv/Pv?

CHECKING HONEYWELL S-8600H OR S8610M

INTERMITTENT IGNITION CONTROLS

PILOT BURNER LIGHTS BUT MAIN BURNER DOES NOT LIGHT

Correct the situation by consulting the installation or user’s manual on how to adjust pilot flame.

Replace	NO
		Is voltage (24 Vac) across terminals
ignition		MV & MV/PV?
module.
			YES

NO

NO

Does the pilot flame cover 3/8” to 1/2” of ingniter/sensor rod?

YES

Does spark stay on for more than

15 seconds after the pilot is “proven” (lit)?

Attach

wires firmly.

NO

Are the wires securely attached to the main valve operator on the gas control and to terminals MV & MV/PV on ignition module?

YES

Replace main gas valve.

YES

Replace pilot burner and/or ground wire.

NO

Ensure the ground wire and ignition cable are separate from each other (prevents shorting out).

Are they in good condition (not brittle, burnt or cracked)?

YES

Replace pilot burner.

Clean rod or replace

pilot burner if necessary.

NO

NO

Is the ceramic insulator surrounding the igniter/sensor rod in good condition (not broken or cracked)?

YES

Is the igniter/sensor rod in good condition (not worn, corroded, sooted or damaged)?

YES

Replace ignition module.

50