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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
Is voltage (24 Vac) across the PV & MV/PV terminals
on “call for heat”?
NO
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 on gas supply.
Turn off power supply.
Turn on power supply.
NO
Is ignition cable firmly plugged into pilot assembly
Securely connect cable
and module?
and/or ground wire.
Is ground wire firmly attached to pilot assembly and
GND terminal on module?
YES
Replace cable and/or
NO
Are ignition cable and ground wire in good condition (not
ground wire.
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
Carefully bend down-
shield, etc.).
wards top of ground
NO
strap to achieve
Ignition cable must not touch metal surfaces or current
1/8" spark gap.
carrying wires.
Is there a 1/8" gap between ground strap and electrode?
YES
NO
Replace ignition
Is the ceramic insulator surrounding the electrode cracked
module.
or broken?
YES
Replace pilot burner assembly.
