A.O. Smith Troubleshooting Honeywell S8600H and S8610M Ignition Issues for Boilers

Models: DB/DW-720-1810

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CHECKING HONEYWELL S8600H OR S8610M (NAT. GAS) INTERMITTENT IGNITION CONTROLS

NO SPARK AT PILOT BURNER

NO

Replace ignition module

Is voltage (24 Vac) across the 24 V terrminals on module during “call for heat”?

YES

NO

Turn on gas supply.

Turn on power supply.

NO

Securely connect cable and/or ground wire.

 

Replace cable and/or

 

NO

 

ground wire.

 

 

 

 

 

Carefully bend down-

 

 

wards top of ground

 

NO

strap to achieve

 

 

1/8" spark gap.

 

 

 

 

 

 

 

 

NO

Replace ignition module.

Is voltage (24 Vac) across the PV & MV/PV terminals on “call for heat”?

NOTE: S8610M will automatically reset every five (5) minutes. For S8600H pilot valve will be de-energized if module

goes into lockout condition. Reset system by turning electrical power off or by turning system controller to off or down below “call for heat”. Wait one minute then turn system on.

YES

Turn off power supply.

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)?

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?

YES

Is the ceramic insulator surrounding the electrode cracked or broken?

YES

Replace pilot burner assembly.

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A.O. Smith DB/DW-720-1810 warranty No Spark AT Pilot Burner, Yes

DB/DW-720-1810 specifications

A.O. Smith has a longstanding reputation for quality and innovation in the water heater industry, and the DB/DW-720-1810 model exemplifies these values. This particular water heater is designed to provide reliable hot water, making it suitable for both residential and commercial applications. Its impressive features and cutting-edge technologies set it apart from conventional models.

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