Have HVAC Questions? Ask an HVAC Expert for Answers
Hello and thanks for using this service, if you have been waiting do not worry or get upset I am just one of the techs on here and I try to get to as many customers as I can and I just picked up your question now. Please give me time to respond as typing, researching and adding links takes me time to do so please be patient and often I will ask you questions to narrow down the issue to get is diagnosed correctly.
Are there any error codes coming up on the board?
Yes there is a main control board in the furnace that has flashing LEDs compare the flash pattern to the error code list listed on the back of the panel that you will remove to get at it. Let me know what you find
Can you give me the model on the furnace please? It will be located inside burner compartment just above burners on side panel. The number listed is for an exhaust muffler used on such units as the G14 series.If so your furnace will not give error codes.
LB-50527CC is a part number for a muffler used on the unit. The furnace model will be on a label on inside panel of furnace.
See below showing the muffler
No problem , let me grab a manual so I can guide you with this specific unit rather than vague ideas.
Do you have a volt meter so we can do some troubleshooting?
Ok we are going to be limited to what we can check since we can not see electricity. Would you like to obtain a meter or see what we can find without one?
On call for heat does the purge motor come on?
Ok your particular unit there is no flash code , the flashing green just indicates that we have an issue that needs to be corrected.Troubleshooting chart gives us step by step checks to go trough but most steps require a meter for checking voltage or continuity.I think we should get that meter and go through these steps tomorrow if that is good for you.
And no, you do not pay a second time, just come back to question and we go from here.Do not rate answer until we are completely finished.
Do you have a jumper wire you can bypass limits just for a test to make sure they are all closed?
Sounds like a plan.Look forward to helping you with this.
Talk with you tomorrow.
I see the other tech is gone and has been for a couple days do you still want help?
Just let me know when you are ready to work on this.I have not gone anywhere. just waiting for you to get the meter.We will proceed when ready.
Had to run out. I am here when ready
OK lets start at the beginning. With power on to furnace and thermostat off. Is green light solid ? And on call for heat does anything at all come ?
OK locate the purge bower and lets check for 120 volts between wires to purge motor.
Yes e have to have power on and thermostat calling for heat. First thing that should happen is we should get 120v to purge motor .