York (Ignition Failure)

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Old 02-07-19, 09:57 AM
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York (Ignition Failure)

Hello fellow handymen,

Todays temperature is -10 degrees fahrenheit and I woke up to the house colder than the set temperature on the thermostat, so I took a trip to the crawlspace. The Indicating light shows 8 flashes of red which means, "Ignition lockout due to recycles." I restarted it, it ran for a few cycles, then shut back off. During the rerun time it did not kick out any heat. I saw some other threads that mention cleaning the ignition rod or replacing the heat ignition plate? Just thought I could start a fresh thread just in case I run into problems once I get the face off of the ignition area. Thanks for your help, look forward to hearing your opinion.

FYI the model number is GY9S080C16GH11H
 
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Old 02-07-19, 10:36 AM
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Quick update, I just removed the flame sensor. Didn't look too dirtied or discolored. Then I went ahead and wiped the sensor until the rust color came off just took a cloth and lightly rubbed until it came off. When I put it all back together it ran for about 6 cycles maybe 15 minutes started to pack up my tools and it shut off giving the 8 red flashes again.
 
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Old 02-07-19, 11:25 PM
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Welcome to the forums.
(Keep all your furnace problems in this thread)

The 8 fault is loss of established flame 5 times in one call for heat. You need to be there in order to establish why the flame is failing. Your furnace has a sophisticated control board and will read back the last 5 fault codes.

RAPID AMBER FLASH: Flame sense current is below 1.5 microamps.
Check and clean flame sensor. Check for proper gas flow.


A slow amber flash is normal flame sensing.
Watch the amber light to see if there's a fault with the flame sensing. It doesn't have to be an actual rod issue.... it could be the rod is not completley engulfed in the flame. It must be for the circuit to work properly.

The manual has a good diagnostic section towards the end.

York GYS9 manual
 
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Old 02-09-19, 12:01 AM
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Ensure the pressure switch is closing....no water in line.
 
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