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APPENDIX A - CONTROL MODULE
Intermittent Pilot
Ignition System Checks
STEP 1: Check ignition cable.
• Verify ignition cable does not touch metal surfaces.
• Verify only factory supplied Ignition cable (or approved
replacement) is used.
• Verify connections to ignition module and igniter or
igniter-sensor are clean and tight.
• Verify ignition cable provides good electrical continuity.
STEP 2:
Verify ignition system grounding. Nuisance shutdowns are
often caused poor or erratic grounding.
Common ground is required for module and pilot burner/
igniter sensor.
— Check for good metal-to-metal contact between
pilot burner bracket and the main burner.
— Check ground lead from GND (BURNER) terminal
on module to pilot burner. Verify connections are
clean and tight. If wire is damaged or deteriorated,
replace with No. 14-18 gauge, moisture-resistant,
thermoplastic insulated wire with 105°C [221°F]
minimum rating.
— Check ceramic flame rod insulator for cracks or
evidence of exposure to extreme heat, which can
permit leakage to ground. Replace pilot burner/igniter
sensor and provide shield if necessary.
— If flame rod or bracket is bent out of position, restore
to correct position.
STEP 3: Check spark ignition circuit.
Disconnect ignition cable at SPARK terminal on module.
WARNING
Electrical shock hazard. Ignition circuit generates
over 10,000 volts. Turn OFF electrical power
supply at service panel before making electrical
connections. Failure to do so could result in death
or serious injury.
!
Energize module and listen for audible sparking noise.
When operating normally, there should be buzzing noise
turns on and off twice per second for duration of 1–7
seconds, depending on model.
If this LED is blinking and the burner is not firing:
1.
Make sure the plug connection (or jumper, on
boilers where vent damper plug is not used) is
secure.
2.
Make sure the plug connection at the vent damper
end is secure and oriented correctly.
3.
Make sure damper motor turns.
4.
Verify the damper end switch has closed
DANGER
Carbon Monoxide Hazard:
If the burner fires
when the vent damper is not fully opened or there is
any other blockage in the flue, dangerous flue
products, such as carbon monoxide, will escape into
the living space causing severe personal injury or
death. The flue as well as the vent damper must be
checked for proper operation before allowing the
system to operate.
!
Circ Delay LED
The blue “circ delay” LED lights
to indicate the heating circulator
(terminal C1) is being held off. See
Circulator Hold Off (option 5) top
of page 9 of the Hydrolevel manual
for more information.
9
PN 240013087 Rev. A [09/30/2020]
