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Getting continuous led blinking on rodgers 50A55-480 when…

Customer Question
Getting continuous led blinking...

Getting continuous led blinking on white rodgers 50A55-480 when calling for heat. Furnace ignites and then shuts off

Contractor's Assistant: Did you double-check the thermostat's settings? And what about the filters?

Filter is clean, thermostat is good and calling for heat

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

Yes

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

New flame sensor, ignitor is good, high temp cutoff is good

Submitted: 1 year ago.Category: HVAC
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Answered in 17 minutes by:
4/1/2017
HVAC Technician: Webb-Guy, HVAC Mechanic replied 1 year ago
Webb-Guy
Webb-Guy, HVAC Mechanic
Category: HVAC
Satisfied Customers: 3,430
Experience: maitenance tech at casto
Verified

Hello, and welcome to JustAnswer. My name is ***** ***** I will be the one to assist you. Give me just a moment to pull up some information for you and I will be right with you.

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HVAC Technician: Webb-Guy, HVAC Mechanic replied 1 year ago

how many times is it blinking?

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Customer reply replied 1 year ago
continuously
HVAC Technician: Webb-Guy, HVAC Mechanic replied 1 year ago

there is no pause in between?

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Customer reply replied 1 year ago
no, no pause
HVAC Technician: Webb-Guy, HVAC Mechanic replied 1 year ago

ok one moment please

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Customer reply replied 1 year ago
I initially thought it was the flame sensor [on first flame up I got 2-3 micro amps and then it switched to open circuit]. So, I put a new flame sensor in and that did not resolve the issue.
Customer reply replied 1 year ago
I don't know about the old (50A55-480) circuit board, but the new ones indicate that a continuous blinking is the flame sensor. Correct?
HVAC Technician: Webb-Guy, HVAC Mechanic replied 1 year ago

so the error you are getting is to replace the circuit board.

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Customer reply replied 1 year ago
A continuous light (not blinking) is given as the code to replace the board. Is the manual wrong?
HVAC Technician: Webb-Guy, HVAC Mechanic replied 1 year ago

The manual I have for your unit says continuous blinking on is to replace IFC board. Continuous off means check for power.

I was able to find new circuit boards on amazon and ebay

http://www.ebay.com/itm/Trane-American-Standard-White-Rodgers-Furnace-Control-Circuit-Board-50A50-480-/370579358550

https://www.amazon.com/White-Rodgers-50A55-480/dp/B003U4J90K

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Customer reply replied 1 year ago
Nope. Neither of these are going to work. The unit is 50A55 not 50A50, and the second is just the circuit board, not a replacement unit. In addition, this doesn't rule out a relay problem on the gas valve. Thanks, ***** *****'m going to troubleshoot with someone local.
HVAC Technician: Webb-Guy, HVAC Mechanic replied 1 year ago

I will have this question closed for you then. Sorry I was not of help.

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HVAC Technician: gmac2905, hvac tech replied 1 year ago
gmac2905
gmac2905, hvac tech
Category: HVAC
Satisfied Customers: 56
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