Troubleshooting - Heatmaster G100 Operation And Maintenance Manual

G Series Outdoor Furnaces
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 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 the opening 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 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 block-
ages. Make sure ash from the middle, both sides and behind the brick are cleaned.
6. Inspect top chamber of furnace and heat exchange tubes from blockage.
- Is there wet creosote build up?
- 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.
7. Check chimney for blockage, inspecting all the way down into the furnace. Clean out any
blockage.
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 damper plates.
2. Remove plates and clean of 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 furnace. Make sure control is running with no errors or alerts
3. Check fan for operation.
4. Check that the damper is open to allow air injection.
5. Check if the furnace is properly gasifying by opening the bottom door to the Lower Combustion
chamber. A flame should be visible only for a short time after opening the door and glowing em
bers should be present. Keep arms, legs and head at least 3 feet from the opening.
6. Ensure that the air slot in the firebox refractory is clear to allow proper burning
7. Check fuel type. Poor quality fuel will not provide as many BTU's as high quality fuel.
8. Check water level of furnace.
9. Check for creosote blockage in the chimney and heat exchange tubes.
10. Check to ensure all pumps in the system are running.
11. Check to make sure there are no leaks, hot/wet spots on your ground or breaks in the pipe or fit
tings which may cause the pipe to be saturated and lose its insulation value.
12. Check Temperature of water exiting furnace, entering the building being heated and
fore and after each heat exchanger. Large temperature drops signal large
consumption of the BTU's produced by the furnace. If there is a large difference in the water
at the top of the tank and the water coming from the supply outlet there is not
in the water tank. (See next topic).
13. If every thing is functional call your dealer
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TROUBLESHOOTING

be
enough flow
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