Troubleshooting - Heatmaster G Series Operation And Maintenance Manual

Creosote - Formation, and Need for Removal:
When wood is burned slowly, it produces tar and other
organic vapors, which combine with expelled moisture
to form creosote . The creosote vapors condense in the
relatively cool chimney flue of a slow-burning fire. As a
result, creosote residue accumulates on the flue lining.
When ignited, this creosote makes an extremely hot fire.
The chimney and chimney connector should be inspected
at least twice a month during the heating season to
TROUBLESHOOTING TO ENSURE
PROPER BURNING AND AIR FLOW
If your furnace is not producing enough heat, is smoking
while burning, there is no exhaust coming from the
chimney or there is a general concern on how well it
is functioning you can confirm functionality using this
process:
1. Remove damper cover located below the firebox door
and ensure the damper is opening the metal disc
when the furnace is calling for heat and closing when
the furnace is satisfied.
2 . Use a light piece of paper (like receipt paper) and
hold it up to both of the openings in the metal disc.
The paper should suction to the opening . If it is not,
there is an airflow issue in the furnace that should be
diagnosed by your dealer.
3. Make sure the ash bed is not so high as to block air
holes in the panels on the sides of the firebox.
4. Check to ensure the slot at the bottom of the firebox is
completely open .
5. Check to ensure all ash from the lower combustion
chamber is removed and there are no blockages.
Make sure ash from the middle, both sides and behind
the brick are cleaned.
6. Inspect top chamber of furnace and heat exchange
tubes for blockage.
— Is there wet creosote build up? If there is, inspect
the bypass plate to ensure it is seated properly to
seal against the flange
24 Heatmaster G Series Furnace Operating Manual
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determine if a creosote buildup has occurred. If creosote
has accumulated it should be removed to reduce the risk
of a chimney fire.
CAUTION: Make certain that all electrical power to the
furnace and components is shut off. It can be washed
using water and a mild nonabrasive cleaner suitable for
painted surfaces .
ATTENTION: Avoid direct water pressure

TROUBLESHOOTING

7. Check chimney for blockage, inspecting all the way
More than likely, if there is a problem with the furnace
burn or air flow, you will find it by checking these things.
If the actuator damper plates do not open or close
as they should and the power in the furnace is
acting appropriately:
1. Remove the bracket, spring, and motor to get at the
2 . Remove plates and clean off any creosote, ice, dirt, etc .
3 . Re-install and test for function .
If the furnace is running but fails to bring water up to
temperature:
1. Check fire.
2. Check for power at the furnace. Make sure control is
3. Check fan for operation.
4. Check that the damper is open to allow air injection.
— Do the spirals in the heat exchange tubes have full
movement up and down?
— Is there creosote build up in the fan housing or in
the fan wheel?
Clean any creosote found by scraping it off.
down into the furnace. Clean out any blockage.
damper plates .
For additional lubrication, a light coating of automatic
transmission fluid can be applied.
running with no errors or alerts .