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Category: HVAC
Satisfied Customers: 14880
Experience:  15yrs in the HVAC industry with certificates and degrees.
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I have a 50e47-843. After multiple failed attempts to start

Customer Question

Hello I have a white rogers 50e47-843. After multiple failed attempts to start furnance it goes into a constant red blinking pattern. The furnace seems to be starting up ok until the glow plug burns hot orange for a few seconds then goes dark. This happens multiple times then the rogers unit goes into lockout
JA: Did you check the furnace's filters?
Customer: They don't look bad but I could take it out
JA: Do you plan on doing the work yourself?
Customer: Only this simple troubleshooting if the white rogers unit is bad I can replace that but it never seems to get full flame on enough for the blower to start
JA: Anything else we should know to help you best?
Customer: Had the roger unit replaced about 5 years ago. I have internittant problems with the furnance/air conditioner. Last year bought a new thermostat and didn't have any issues until turning over from air cond to heater
Submitted: 11 months ago.
Category: HVAC
Expert:  HVAC Guru replied 11 months ago.

Hello, one minute while I get some information together.

Expert:  HVAC Guru replied 11 months ago.

Hello and thanks for using this service! If you are a JA Member I would like to personally thank you and welcome you back! I am HVAC Guru an extremely experienced tech on the site and I try to get to as many customers as I can. NOTE it takes time for me to type research and add links so please wait for me to respond back I can only do this so fast. Secondly, I do not know your skill level so please try and let me know if I am going beyond your knowledge or comfort zone thanks! I strive for a 5 star rating from everyone especially our JA members.

Do you ever see a flame?

Customer: replied 11 months ago.
Never saw a flame
Expert:  HVAC Guru replied 11 months ago.

OK so it just glowed then went out? If so check and see if you are receiving 24 volts to the main valve when it is glowing

Customer: replied 11 months ago.
Do I just use the voltmeter on the mv1 and mv2 on the white Rogers?
Expert:  HVAC Guru replied 11 months ago.


Customer: replied 11 months ago.
Ok I will check it out. Can we resume tomorrow?
Expert:  HVAC Guru replied 11 months ago.

Yes for sure just get back to me

Customer: replied 11 months ago.
Hi I just put the voltmeter on the main valve and when the heating element lit to jumped to 30V ish for like a second and went down.
Customer: replied 11 months ago.
Still no flames
Expert:  HVAC Guru replied 11 months ago.

Replace the spark module on the unit.

All I ask is please use the Star Rating Link at the top of your page before leaving, that is the only way I am paid anything through the site and that will also get you a DIRECT LINK emailed to you to get back to me! are greatly appreciated so thank you very much for using this service. If you have any other questions just post back to me here anytime!

Customer: replied 11 months ago.
is that the ignitor $125 or ignition control module $350
Customer: replied 11 months ago.
is that the white rogers control module?
Expert:  HVAC Guru replied 11 months ago.

The ignition control module the white rogers control

Customer: replied 11 months ago.
Cool I just ordered one and gets your Sunday I'll let you know how it goes
Customer: replied 11 months ago.
I installed the new white rogers and I get the same results :( What next?