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Just replaced control board now five red blinks on a

Customer Question
Just replaced control board...

Just replaced control board now five red blinks on a gmh950703bxad goodman furnace

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

Yes new

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

Yes have some experience in the field

Submitted: 9 months ago.Category: HVAC
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Answered in 24 minutes by:
12/7/2017
HVAC Technician: Regan Land, HVAC Technician replied 9 months ago
Regan Land
Regan Land, HVAC Technician
Category: HVAC
Satisfied Customers: 768
Experience: Over 20 years of experience, NATE Certified, Licensed HVAC Contractor, Certified IAQ Specialist
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Hi, my name is ***** ***** I'll be happy to assist you with your question. Does the board immediately start flashing, or only with a call for heat?

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Customer reply replied 9 months ago
it ran good for about four hours now it immediately starts flashing
HVAC Technician: Regan Land, HVAC Technician replied 9 months ago

Okay, thanks. I'm showing that 5 flashes is a "flame sensed without gas valve." Is that what you show 5 flashes is?

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Customer reply replied 9 months ago
iput the old board back in and it will run but the inducer motor run all the time wich is why I changed the board
HVAC Technician: Regan Land, HVAC Technician replied 9 months ago

Okay, let me look over a couple of things and I'll get right back to you

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HVAC Technician: Regan Land, HVAC Technician replied 9 months ago

Sorry for the delay - got tied up. Are the two boards identical? Does the blue wire from the flame sensor connect to FS on both boards?

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HVAC Technician: Regan Land, HVAC Technician replied 9 months ago

Okay, thanks. As long as the flames weren't staying lit when thermostat wasn't calling for heat, then the only explanation is a bad replacement board.

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