Goodman Furnace Troubleshooting

Nothing takes the joy out of owning a furnace faster than having to call a technician in to fix the problems with the unit. It is always recommended that a certified HVAC technician be called for any Goodman furnace troubleshooting.

This is to ensure the safety of the homeowner and their home, as well as ensuring that the warranty of the Goodman furnace is not voided from unauthorized repair jobs to the unit.

The most common issue with the furnace seems to be with the ignition of gas. This problem could be due to cracks in the flue box, furnace circuit control board, roll-out switches or a faulty or dirty thermal flame sensor.

A simple Goodman furnace troubleshooting check-point should be in these areas, only after the furnace has been shut down. Use a pair of gloves to check the ignition parts and see if the flame sensor is covered with debris. If so, lightly sand down the flame sensor.

A continued problem with the ignitor parts may come from the installation of the wrong part, which can affect the voltage levels for the unit. Power surges due to electrical problems can result in a furnace owner having to do some troubleshooting. The best way of solving this problem is to allow a qualified electrician to check the house voltage line and a HVAC technician to check the gas pressure to rule out potential overheating of the unit.

Other furnace troubleshooting tips for ignition problems would be to clean out the squirrel cage, the filters and the evaporator coils. Furnace owners should also check to make sure that the thermostat is directly set to heat and the condensation reservoir, which is the pump, is running and the reservoir is not full. If this is the case, the reservoir pump will have to be replaced.

Another check-point to look into with a Goodman furnace is the condition of the filters. Cleaning the filters or replacing them is recommended to keep the furnace working properly.

The model number of the filter is located on the edge of the filter for a quick reference for the replacement of the filter. The installation of the filter will be indicated by an arrow that points towards the direction as to how the filter is to be replaced.

Other furnace troubleshooting tips for the ignition problems is to make sure the condensation drain trap is cleaned and that the burners go through the required cycling time. A recommended furnace troubleshooting tip is to listen for the sound of the sound of an inducer that has shorted out. This could be noted by the hissing sound a furnace will make during the cycling time.

Even for the most menial Goodman furnace troubleshooting maintenance jobs on the furnace, the homeowner should make sure that the unit is shut down completely. This goes for cleaning out the squirrel cage compartment, checking the reservoir and drainage traps, and sanding down or wiping down the thermal flame sensor. A qualified HVAC technician and installer should be contacted for any unresolved Goodman furnace troubleshooting problems.

Originally posted 2011-01-15 10:44:56.

3 thoughts on “Goodman Furnace Troubleshooting

  1. hal

    Furnace will not ignite. Only induce fan is on. Ignition hot surface does not turn red hot. LED stead on (no flashes).

  2. Frank Janese

    The red light is blinking 3 times then stops then 3 times repeatally i believe this is telling me the low pressure switch is stuck open not sure witch one it is

  3. William Smith

    I have a 3 year old Goodman GSP3 central gas and eletric air system, the gas heat has three valves on it the bottom valve has an ingitor on it and the bottom and middle valves should lite off the bottom one but they will not. The top valve has a sensor on it that shuts the system down if it does not heat within a set limit. We have tryed everthving to fix this but nothing works, any suggestions. I have replace the valves, and checked alignment.

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