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avengence · Nov 19, 2009, 10:48 PM

Ok so I have a day&night A/C and heater setup on my roof. I recently had a problem where the burners would not light so I got a honeywell retrofit kit. Just put that in today and got it all set up. Wasn't very hard to get going. Now the problem is, when I turn on my heater it kicks on, pilot lights and then the burners light. Burners are on for a couple of minutes and then sometimes the fan kicks in at a low speed. Sometimes it doesn't but it always shuts off. I was told that it has a temp sensor in there and that it shuts off to protect the heat exchanger.

If I turn the fan on manually and turn on the heater it works fine and it runs like there is nothing wrong. Someone told me that the fan has a sensor in there to tell when it gets hot and that it may be faulty or its wired incorrectly.

Anyone have any ideas? It would be nice to set the heater and not have to worry about it. Thanks!

KC13 · Nov 20, 2009, 02:43 AM

Provide complete unit model # & Honeywell kit # to allow data lookup. Was this a symptom before the retrofit kit was installed?

avengence · Nov 21, 2009, 01:45 PM

I might have figured something out. My old unit had a violet plug that went to a heat relay coil. My new one doesn't have anything for it though so I'm confused. My new unit is a "Y8610U Intermittent Pilot Retrofit Kit" made by Honeywell. If I turn the fan on manually it works fine though. I am trying to get the info for the heater model and everything but I know it was installed in 83, I found the sales recipt for it recently.

KC13 · Nov 21, 2009, 01:56 PM

You're on the right track. If the heat relay coil is not being powered, fan operation will not be initiated.

avengence · Nov 21, 2009, 01:58 PM

Do I need to just plug that into the power transformer or does it need to get power at a certain time during heat up?

KC13 · Nov 21, 2009, 02:26 PM

Originally Posted by avengence

Do I need to just plug that into the power transformer or does it need to get power at a certain time during heat up?

You posted Honeywell kit#, but not equipment model & product#. Need both to view schematics.

avengence · Nov 21, 2009, 02:35 PM

http://www.forwardthinking.honeywell.com/related_links/combustion/y8610u/install/68_0291.pdf

avengence · Nov 21, 2009, 02:38 PM

http://www.xpedio.carrier.com/idc/gr...0585dp16-a.pdf

Is from my old system. The schematic on there show is violet or VIO wire going to the coil on page 2.

KC13 · Nov 21, 2009, 02:54 PM

I'll check it out, check back later.

KC13 · Nov 21, 2009, 03:07 PM

Diagram shows red from ignition module & violet from heat relay coil connected to terminal #3 on gas valve. Is this how yours is wired?

avengence · Nov 21, 2009, 04:50 PM

You mean on the honeywell or my old setup? On the new one (honeywell) the violet is plugged into nothing.

avengence · Nov 21, 2009, 05:35 PM

I looked over the honeywell setup over and over again and I can't figure out where to plug it in, but if you say the red wire, that would mean the MV wire going from the box to the valve.

KC13 · Nov 21, 2009, 07:34 PM

Correct, according to the equipment diagram.

avengence · Nov 21, 2009, 09:51 PM

It works!

Thank you so much for your help! I had to get up there to do a quick fix since its supposed to get frosty tonight. Hopefully when the weather clears up I can get up there and clean up my wiring job. Thanks again!

KC13 · Nov 21, 2009, 10:02 PM

Ex-cel-lant! You're welcome... :cool: