Hearth & Home Technologies CFL-24LP-C User Manual

Heat & Glo  •  CFL-18/24/30-C, CFL-24-IPI, ST-CFL-24-B  •  526-910 Rev. E  •  10/08

14

1. Pilot won’t light. 

The ignitor/module 
makes noise, but no 
spark.

a. Incorrect wiring.

Verify “S” wire (white) for sensor and “I” wire (orange) for ignitor 
are connected to correct terminals on module and pilot assembly.

b.  Loose connections or electrical 

shorts in the wiring.

Verify no loose connections or electrical shorts in wiring from 
module to pilot assembly. Verify connections underneath pilot as-
sembly 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 in. 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 fi ne. Inspect pilot assembly for shorted sparker wire or cracked 
insulator around electrode. Replace pilot if necessary.

2. Pilot won’t light, 

there is no noise or 
spark.

a.  No power.

Check batteries.

b.  A shorted or loose connection in 

wiring confi guration or wiring har-
ness.

Remove and reinstall the wiring harness that plugs into module. 
Verify there is a tight fi t. Verify pilot assembly wiring to module. Re-
move and verify continuity of each wire in wiring harness.  Replace 
any damaged components.

c.  Improper wall switch wiring.

Check wiring connections.

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. Re-
move 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 fi ne. Inspect pilot assembly for shorted sparker wire or cracked 
insulator around electrode.

3. Pilot sparks, but 

Pilot will not light.

a.  Gas supply.

Verify that incoming gas line ball valve is “open”. Verify that inlet 
pressure reading is within acceptable limits, inlet pressure must 
not exceed 14 in. W.C.

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/Pilot 

solenoid ohms readings.

Verify battery voltage is at least 2.7 volts. Replace batteries if volt-
age is below 2.7.