Hearth & Home Technologies FI36S User Manual

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33734 Rev J 

19

1 Match will not light pilot. 

a. Main gas shutoff valve closed. Make sure that the shutoff valve located on the

incoming gas line is open.

b. Air in the gas line.

Light a match. Turn valve knob to “PILOT” position

and depress. Keep match near pilot burner until it

lights. 

c. Valve knob is in “OFF” position Turn valve knob to “PILOT” position and depress.

Keep match near pilot burner until it lights.

d. Pilot orifice is plugged, not

allowing gas to flow

This repair requires tools and some degree of

experience. Call a qualified service technician.

e. No gas supply to the appliance. Check the plumbing to ensure the appliance has

been hooked up to the gas supply line.

2 Pilot lights, but will not stay lit

after carefully following lighting

instructions.

a. Thermocouple too tight or too

loose.

Thermocouple must be attached to the valve finger-

tight, plus a 1/8 turn with a wrench.

b. Weak pilot flame.

Pilot flame must engulf the thermocouple. Clean

and/or adjust pilot for maximum flame impingement

on the thermocouple.

c. Defective thermocouple.

Check the thermocouple with a millivolt meter as

follows: Disconnect the thermocouple from the

valve and connect the red lead of the meter to the

silver end of the thermocouple. Now connect the

black lead of the meter to the copper tubing of the

thermocouple. Light the pilot and keep the knob

depressed while taking readings. The meter readings

should be greater than 14 mV. If not, replace

thermocouple.

3 Pilot “ON”. No gas to main

burner, valve knob “ON”.

a. A blockage is preventing gas

flow.

Inspect the burner orifice for obstruction. Call a

qualified service technician.

b. Defective valve.

Replace gas valve. Call a qualified service

technician.