A.O. Smith Troubleshooting Honeywell S8600H and S8610M Ignition Issues for Boilers
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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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Contents Installation Operation Maintenance Limited Warranty TM Models DB/DW-720-1810Contents Replacement PartsForeword ROUGH-IN Dimensions Capacities Installation ClearancesLevelling Pressure Drop Features Safety Relief ValvesManual Reset High Temperature Safety Limit Control Electronic Intermittent Pilot Ignition ControlAutomatic Reset High Temperature Limit Control Safety Flow SwitchThermal Balancer Dual Stage Models only HIGH/LOW OperatorInstallation Instructions Required AbilityLocation AIR RequirementsVenting the Boiler Draft HoodVent Connection Connecting Boiler to a Common Vent GAS ConnectionsPurging Correct GASHigh Altitude Installations Wiring ConnectionsConventional Installations ExampleSystems Equipment Installation Circulating Pump Circulating Pump Must be Properly Sized for Your ApplicationSystem Installation Tank Temperature ControlConventional Space Heating Installation LOW Water CutoffDB Installation Installation AS Boiler ReplacementPage LINEAR-TEMP Space Heating Installations LINEAR-TEMP Space Heating ApplicationsDuraMax Pump Performance Requirements Safety Flow Switch Thermometer Pressure GaugeONE Boiler LINEAR-TEMP System Page Page Page Page Page Page Hard Water Conditions ONE DURA-MAX Model DW Commercial Boiler with Vertical TankONE DURA-MAX Model DW Commercial Boiler with Horizontal Tank NPT NPT Manifolding of Model TJV-120M & TJV-200M Tanks START-UP and Operating Instructions For Your Safety Read Before Operating Precautions Checking and Adjusting the InputInternal Contaminants Pilot BurnerPRE-TROUBLE-SHOOTING TROUBLE-SHOOTINGNo Spark AT Pilot Burner YESSpark AT Pilot Burner but Pilot will not Light Pilot Burner Lights but Main Burner does not Light General Maintenance Venting MaintenanceHeat Exchanger Preventive Maintenance Relief ValveDeliming Solvents Removing Light Deposits of ScaleMechanical Removal of Deposits Removal of AN Existing Boiler from a Common Venting SystemDURA-MAX Limited Warranty Page Page Replacement Parts

DB/DW-720-1810 specifications

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