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1.Do you have a meter for troubleshooting
Can you give me complete model from inside furnace in burner compartment so I can provide guidance with this specific unit.Model will be on a label just above burners on right or left inside panel
Looking up furnace now. Turn power off to furnace then back on.Tell me if you immediately get an error with thermostat in OFF position.Then call for heat and tell me if furnace does anything at all.
Tell me if you see a number on label with a letter after the 6
Thanks for this information. Now Turn power off to furnace then back on.Tell me if you immediately get an error with thermostat in OFF position.Then call for heat and tell me if furnace does anything at all.
According to my troubleshooting guide, the 4 blinks indicates an ignition failure and says check for furnace ground.
First thing we want to do is make sure the ground wire is secured firmly to cabinet of furnace where power comes in and if there is aground wire on gas valve.Make sure it is clean and secure. We will go from there.
OK if voltage and grounds are good,
Next let's check to see if the flame sensor is clean.
It will be a small metal rod which sticks in front of burner to sense the flame.It will have a single red wire from board to flame sensor.
Remove it and clean it with emory cloth ,fine sand paper or a dollar bill. See links below
OK Going to either be bad connection or failing control board. I would unplug all wires and reconnect one at a time to board and gas valve just to make sure they have not built up oxidation and are making good connection.If all are good, replace board.
Local Nordyne distributor will have it or you can order online.
What is complete model on furnace?
After doing some research it looks like they all take this one.
OEM part number is ***** You can Googel to find best price.
ICM makes a replacement which is quiet a bit cheaper.