Troubleshooting - Heatmaster G100 Operation And Maintenance Manual

G Series Outdoor Furnaces
If the furnace is running but fails to bring water up to temperature:
1. Check fire.
2. Check fan for operation.
3. Check that the damper is open to allow air injection.
4. Check if the furnace is properly gasifying by opening the bottom door to the Lower Com-
bustion chamber. A flame should be visible only for a short time after opening the door
and glowing embers should be present. Keep arms, legs and head at least 3 feet from
the opening.
5. Check to ensure the furnace is sized accurately according to heat demand.
6. Check fuel type. Poor quality fuel will not provide as many BTU's as high quality fuel.
7. Check water level of furnace.
8. Check for creosote blockage in the chimney and heat exchange tubes.
9. Check for power at furnace. Make sure control is running with no errors or alerts
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 fittings 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
before and after each heat exchanger. Large temperature drops signal large
consumption of the BTU's produced by the furnace.
If the furnace water is hot but buildings do not have heat:
1. Check to ensure all pumps in the system are running.
2. Check filter cartridge for flow blockage (if installed).
3. Check for air in the system at the exchanger by bleeding off.
4. Check for closed valves to ensure water flow.
Check Temperature of water exiting furnace, entering the building being heated and before
and after each heat exchanger. Large temperature drops signal large
consumption of the BTU's produced by the furnace.
If the furnace overheats:
1. Close all air inlets and doors on the furnace
2. Retrieve as much heat as possible from system by turning thermostats up and opening
windows until furnace cools down.
3. Check that all doors are closing properly and that door gasket is completely sealing.
2. Check that the damper plate is opening and closing properly. It should be completely
closed when the furnace temperature is over 180 F.
3. Check water level.
4. Check to ensure all pumps in the system are running.
If the furnace has shut down:
1. Check to ensure that the unit has power.
2. Check to ensure the Furnace On/Off switch is in the On position.
3. Check the water temperature (furnace has a high temperature cut out of 190 degrees F.
and turns on again at 140 degrees).
4. If all checks have not corrected the problem have a technician check the control panel.
If there is a runaway or chimney fire:
1. Make sure the firebox and ash pan doors are tightly closed.
2. Close all combustion air inlets on the furnace.
- 20 -

TROUBLESHOOTING

TROUBLESHOOTING
www.heatmasterss.com