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Author Topic: thermostat wiring  (Read 18258 times)

RSI

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Re: thermostat wiring
« Reply #60 on: November 07, 2013, 06:58:44 PM »

You will need to get a wire to the other side of the transformer then. Is that accessible?
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RSI

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Re: thermostat wiring
« Reply #61 on: November 07, 2013, 07:01:05 PM »

If you can get at the transformer, just run a wire from the output directly to the relay coil. (need two run two wires and connect to each side)
If it works then one will stay and the other will go to the thermostat.
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jksweld

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Re: thermostat wiring
« Reply #62 on: November 07, 2013, 07:16:31 PM »

yes can get to the transformer. I have 2 red wires coming out of it. I put my multimeter on them and get 24V, ran those to the cooling relay and it clciked and buzzed
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RSI

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Re: thermostat wiring
« Reply #63 on: November 07, 2013, 07:19:24 PM »

Loud buzz? more that one click? It was the two connections labeled 24v?
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jksweld

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Re: thermostat wiring
« Reply #64 on: November 07, 2013, 07:22:06 PM »

clicked when I would make contact, yes this is the side marked 24V with the wires coming from the coil to the spade terminals
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RSI

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Re: thermostat wiring
« Reply #65 on: November 07, 2013, 07:24:23 PM »

But blower didn't come on?
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jksweld

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Re: thermostat wiring
« Reply #66 on: November 07, 2013, 07:25:33 PM »

nope
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RSI

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Re: thermostat wiring
« Reply #67 on: November 07, 2013, 07:36:19 PM »

Then I am not sure if it is wired to allow running that relay at the same time as when the main heat is running the blower. You might be better off just adding a relay on the wire that normally powers the fan in heat mode.
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jksweld

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Re: thermostat wiring
« Reply #68 on: November 07, 2013, 07:42:49 PM »

my wires coming out of the transformer are about 6" long then they are wire nutted going down to the seqencer and over to the white wire going to the Tstat. I didnt unhook them at the wire nuts just ran jumpers stright from the coil wires down to the cooling relay on the 24V side. let me wire them so I have just the wires from the transformer going to the cooling relay.
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jksweld

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Re: thermostat wiring
« Reply #69 on: November 07, 2013, 07:51:12 PM »

still no blower, Ran the trans wires straight to the cooling relay and it click and hummed?!?!?
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RSI

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Re: thermostat wiring
« Reply #70 on: November 07, 2013, 08:02:34 PM »

Can you post a pic of the schematic?
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jksweld

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Re: thermostat wiring
« Reply #71 on: November 08, 2013, 10:57:41 AM »

I unhooked all the wires going to one side of the heat elements. And the fan still runs. left heat elemnts unhooked then unhooked everything on the sequencer but the 24V stuff and the m1 and m2 which go to the fan and it still ran. pulled the wire off m1 on the sequencer, thats coming from the cooling relay and if i touch it to anything that has 120 the fan comes on
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jksweld

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Re: thermostat wiring
« Reply #72 on: November 08, 2013, 11:08:04 AM »

I unhooked all the wires on the cooling relay and put 24V to it and it click when made contact and buzzed!! ive got another relay im gonna try off another furnace
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jksweld

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Re: thermostat wiring
« Reply #73 on: November 08, 2013, 01:56:32 PM »

I GOT IT I GOT IT, apparently my cooling relay was bad on the normally open side, so swapped it out with the one from the other furnace, hooked my wires going to the old relay into the new one on the normally closed side and the fan runs with electric heat, moved the wires onto the normally open side added 24V to the other terminals and bam!!!!! just the fan runs!!!!!! Now going to wire it up like its supposed to be instead of.... trial and error version!!
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jksweld

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Re: thermostat wiring
« Reply #74 on: November 09, 2013, 05:47:59 AM »

Thanks for your help RSI!!
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