21
Problem 22
Heater LLights
but wwill nnot
Stay LLit
Is Heater’s
Dust Filter
Reasonably
Clean
?
Remove Igniter and
Clean its Electrode
with Steel Wool or
Emery Cloth
Remove Filter.
Clean Filter
According to
Prescribed Filter
Cleaning Methods in
this Owner’s Manual.
Yes
No
Yes
Is Inner Cone
Clean?
Is High
Voltage Ignition
Cable in Good
Condition?
Is Igniter Clean?
Inner Combustion Cone or Main
Burner Orifice are Plugged with Dirt.
Clean According to Prescribed
Methods in this Owner’s Manual.
No
No
Is Heater’s
Venturi Tube
Reasonably
Clean
?
Clean Heater According
to Prescribed Cleaning
Methods in this
Owner’s Manual.
Yes
No
Is
Flame Sense
Ground Lead Properly
Connected and in
Good Condition?
Check the Lead for:
- Corroded Terminal
- Continuity/
Resistance
- Loose Connections
Repair or Replace as
Necessary.
Yes
No
Is Proper
Pressure Supplied
to the Heater?
Supply Proper Pressure
and Check for Blockages
in Gas Hose.
Yes
No
Yes
Clean Heater
According to
Prescribed Cleaning
Methods in this
Owner’s Manual
No
Verify Resistance Value
of Cable. Should be
5-7K OHM. Verify Cable
has Good Connections.
Repair or Replace if
Necessary.
Yes
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