Goodman Furnace Sequence Of Operation

Dip switch settings gmec furnace.

Goodman furnace sequence of operation.

Then you need to know the sequence of operation for the furnace if you are to troubleshoot the furnace properly. Knowing the sequence of operation will help in troubleshooting a gas furnace. It is the obligation of the installer to instruct the user how to use the room thermostat and what the normal sequence of operation is in both the heating and cooling modes. The thermostat reaches a set temperature and sends a signal for the furnace to turn on.

The video below gives sequence of operation of an 80 efficient furnace and the model used is a janitrol gmp 075 model. Sequence of operation this appliance communicates with room thermostat through the low voltage connections described in thermostat location and low voltage connections section of this manual. Hi martin the gas valve should turn on right when the spark ignitor starts if you don t smell any gas or hear the valve open then your probably not getting that far in the sequence on a call for heat the first thing it will check is the safeties as it turns on the inducer motor most furnaces use the air switch to verify the inducer is running if there is a problem with the air switch the inducer motor may continue to run but it will stop the starting sequence try rapping on the air. First you need to know what kind of furnace it is that is having issues.

Such as unventilated garages utility rooms or parking areas because of carbon monoxide poisoning hazard b10259 216 special warning for installation of furnace or air handling units in enclosed areas such as garages utility rooms or parking areas. Front cover pressure switch. Gas furnaces sequence of operation type of furnace. The sequence of operation may vary depending on type or brand.

A sensor detects if there is a vacuum created by the inducer motor if there is it closes a switch if there is no vacuum the switch is left open. Control board does a safety check limit switches roll out switches. But for the most part manufacturers have all gone to a hot surface or direct spark ignition the sequence of operation is as follows. The inducer motor begins to spin and creates a vacuum to insure the left over gasses go out the exhaust pipe.

Sequence of operation of this furnace is similar to most 80 furnaces made after 1990. Sequence of operation gmec96. Sequence of operation gmvc96.