B. Intellifire Ignition System

Symptom

Possible Cause

Corrective Action

1. Pilot won’t light. The

A. Incorrect wiring.

Verify “S” wire (white) for sensor and “I” wire (orange) for ignitor are

ignitor/module makes

 

connected to correct terminals on module and pilot assembly.

noise, but no spark.

 

 

 

B. Loose connections or electrical

Verify no loose connections or electrical shorts in wiring from

 

shorts in the wiring.

module to pilot assembly. Verify connections underneath pilot

 

 

assembly are tight; also verify connections are not grounding out to

 

 

metal chassis, pilot burner, pilot enclosure, mesh screen if present,

 

 

or any other metal object.

 

 

 

 

C. Ignitor gap is too large.

Verify gap of igniter to right side of pilot hood. The gap should be

 

 

approximately .17 inch or 1/8 in. (3 mm).

 

D. Module.

Turn ON/OFF rocker switch or wall switch to OFF position. Remove

 

 

ignitor wire “I” from module. Place a grounded wire about 3/16 in. (5

 

 

mm) away from “I” terminal on module. Place ON/OFF rocker switch

 

 

or wall switch in ON position. If there is no spark at “I” terminal

 

 

module must be replaced. If there is a spark at “I” terminal, module

 

 

is fine. Inspect pilot assembly for shorted sparker wire or cracked

 

 

insulator around electrode. Replace pilot if necessary.

 

 

 

2. Pilot won’t light, there is no

A. No power or power supply

Verify that power supply is installed and plugged into module. Check

noise or spark.

installed incorrectly.

voltage of power supply under load at spade connection on module

 

 

with ON/OFF switch in ON position. Acceptable readings of a good

 

 

power supply are between 3.2 and 2.8 volts AC.

 

 

 

 

B. A shorted or loose connection

Remove and reinstall the wiring harness that plugs into module.

 

in wiring configuration or wiring

Verify there is a tight fit. Verify pilot assembly wiring to module.

 

harness.

Remove and verify continuity of each wire in wiring harness.

 

 

Replace any damaged components.

 

C. Improper wall switch wiring.

Verify that 110/VAC power is “ON” to junction box.

 

 

 

 

D. Module not grounded.

Verify black ground wire from module wire harness is grounded to

 

 

metal chassis of appliance.

 

E. Module.

Turn ON/OFF rocker switch or wall switch to OFF position. Remove

 

 

ignitor wire “I” from module. Place ON/OFF rocker switch or wall

 

 

switch in ON position. If there is no spark at “I” terminal module must

 

 

be replaced. If there is a spark at “I” terminal, module is fine. Inspect

 

 

pilot assembly for shorted sparker wire or cracked insulator around

 

 

electrode.

 

 

 

3. Pilot sparks, but Pilot will

A. Gas supply.

Verify that incoming gas line ball valve is “open”. Verify that inlet

not light.

 

pressure reading is within acceptable limits.

 

B. Ignitor gap is incorrect.

Verify that spark gap from ignitor to pilot hood is .17 in. or 1/8 in (3

 

 

mm).

 

C. Module is not grounded.

Verify module is securely grounded to metal chassis of appliance.

 

 

 

 

D. Module voltage output / Valve/

Verify battery voltage is at least 2.7 volts. Replace batteries if

 

Pilot solenoid ohms readings.

voltage is below 2.7.

 

 

 

Heatilator • Novus NDV Series • 4055-187 Rev. V • 1/12

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Hearth and Home Technologies 4055-187 owner manual Intellifire Ignition System
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