York Diamond 80 not lighting. Ignitor wired wrong?


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Old 03-23-14, 09:57 AM
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York Diamond 80 not lighting. Ignitor wired wrong?

I have a York Diamond 80 that runs fine, but doesn't light. The LED on the control board flashes continuously which means it is not calling for heat. The ignitor does not heat up at all, but the furnace can be lighted manually. The control module is the White Rodgers 50A50-230. I believe the ignitor was connected to the control module with white and red wires at Y and C, but now the ignitor is not working so this must be wrong. Any suggestions?

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Old 03-23-14, 11:51 AM
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Welcome to the forums.

The igniter does not heat up at all, but the furnace can be lighted manually.
How is that possible ?? You can't have a furnace that runs fine but won't light.

Have you checked the igniter for visual burns/breaks and with an ohmmeter for continuity ?
 
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Old 03-23-14, 03:00 PM
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It doesn't look damaged but I did a continuity check on the 2 white wires coming out of the back and I got infinity so I guess that is the problem. Have any idea where I can buy a new one?
 
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Old 03-23-14, 03:15 PM
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You can check with a local HVAC supply company. Just bring the part with you.
If you leave the full furnace model number, I can look it up online.
 
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Old 03-23-14, 03:23 PM
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Furnace's model number is P2MPD12N06401G
 
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Old 03-23-14, 05:59 PM
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Typical confusing issue when trying to find a part. Too many cross references.

LH33ZS004 should be the part number you can use to locate part.

LH33ZS004 at Amazon

Possibly a replacement.....
PART #: 47320937001 - KIT IGNITER W/BRACKET SCREW ADAPTER
 
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Old 03-24-14, 04:05 AM
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The LH33ZS004 at Amazon looks like exactly what I have except that the wires were stripped and twisted together.

The other other one looks different so I'm kind of wary. I will drop by the hvac distributor in my area this morning and see what they can find for me and if they don't have it I will overnight the one from Amazon.

In looking around at other people with igniter problems I see that someone recommended having a spare.

Any comment on the frequency of this problem? Every couple years? 5 years? 6 months - 10 years?
 
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Old 03-24-14, 07:23 PM
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It can last from one year to many. There is no time limit attached to them.

Since that has no plug it's probably been replaced before. Sometimes a substituted part comes with a different plug. Two wirenuts are fine just keep the splice away from the flames or the wirenuts may melt.

The LH33ZS004 is what my York uses. I replaced it at approx. 10 years old. The new one may be like 5 years old now. Can't remember as time flies.

I have a spare one on hand for mine. They are FRAGILE.... handle with care.
 
 

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