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New Honeywell R7284U to replace R7184B wiring question
I just picked up the new R7284U control and when I went to wire it, there is no wire in my furnace for the LIMIT. The display just reads STANDBY. I've been reading here and just want some clarification as how to handle this as I don't want to mess up my furnace. The old control R7184B had no spade for the LIMIT and no wire to hook up to it. This is a mobile home (Nordyne/Miller) hot air oil furnace. All wiring is neat and wired without any wire nuts and the old control uses the same type of spade connections. The old control had no spade for the LIMIT. Blower fan limit has it own wired connection and did not hook up to old control. Thus, I have seen, in my web research, that the new control needs 120v power going to the LIMIT to work. Is that correct? If so, can I use one of the wires that came with the new control and hook the bare wire end into the spade connection of L1 and the connect the other end to the LIMIT spade to give it power? Like a jumper. I have wired up the other lines as they should be, meaning Igniter to igniter, burner to burner, valve to valve, L1 to L1, cad's to cad's, all 4 L2's to all 4 L2's. The LIMIT is the only one not connected. I don't want to cut and splice wires if I can get away with it, since the wiring is so neat. Is this what I need to do to get this new primary control to work?