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Just having an issue with our 50a55 furnace controller going…

Hello, just having an...

Hello, just having an issue with our white rogers 50a55 furnace controller going into lock-out mode. Trying to research what could be causing the problem

Contractor's Assistant: Did you check the furnace's filters?

No I haven't

Contractor's Assistant: Do you plan on doing the work yourself?

Yes, hopefully

Contractor's Assistant: Anything else we should know to help you best?

I don't believe so. My understanding (please correct me if I'm mistaken) is that I need to get it out of lock-out mode to determine if there is another fault code that gives more detail on the problem

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Customer reply replied 4 months ago
We've waited the one hour period that supposedly resets the lock out, but it does not reset. Also turned the unit off at the switch for >1hr, but this did not reset the lock-out either
Answered in 5 minutes by:
3/14/2018
Rick
Rick, HVAC Supervisor
Category: HVAC
Satisfied Customers: 24,419
Experience: 40+ yrs. experience as a licensed oil & gas technician.
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Welcome to Just Answer, my name is ***** ***** I will do my best to help you with your issue. If my initial response doesn’t answer your question then let me know and we can continue our conversation.

A lockout flash code indicates an ignition failure. Other failures have different flash codes. Turn the power off for at least 1 second but less than 20 seconds. What happens when it starts back up? Where in the ignition sequence does it fail?

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Customer reply replied 4 months ago
After restarting, you can hear a 'click' (assuming the auto ignition), then shortly after it displays a single flash for 1 second, then nothing.
Customer reply replied 4 months ago
Gas to the other appliances in the house is still flowing, so I'm assuming that there is gabs supply to the unit

The control will flash once upon start up. If that's all it does then the control is suspect. A lockout would flash once pause then flash again continuously

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Customer reply replied 4 months ago
Thanks Rick. It’s the first scenario, flashes once then nothing. Definitely not a single flash, followed by pause, then repeat of single flash and so on.

You're welcome

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Customer reply replied 4 months ago
Rick, before I purchase and install a new control board, are there any other possible causes of ignition failure that I should check, i.e. rollout switch function? Controller is a White Rogers 50a55, furnace is a Traine XE80 for reference

All those other causes have separate and distinct error codes. The fact that it does nothing beyond the initial flash would be evidence enough for me to replace it if I was there.

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Customer reply replied 4 months ago
Great, thanks

You're welcome

Rick
Rick, HVAC Supervisor
Category: HVAC
Satisfied Customers: 24,419
Experience: 40+ yrs. experience as a licensed oil & gas technician.
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