Re: Dose the Goodman GPD075-3 have a fan oni have a red...
Depends on your stat, red goes to R on stat white goes to W on stat and if your stat has a G terminal that is so you enable the fan only without heat if not then this option won't be available to you.
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Look closely at the wire terminal screws on the thermostat. There are raised letters telling you what color wire to connect to it. be careful not to touch the red wire to the others. You can blow the internal fuse on the 24 VAC transformer that supplies the voltage to the thermostat.
your transformer should have multiple wires on it. 2 of them are for 120 volt side hook up usually black is your hot 120 v wire and white is the common or neutral wire. on the other side of the transformer you have 2 more wires these are your low 24v side colors can range from red,green, blue, yellow ect. the wires for 24v dont matter about polarity or which one you hook up. one is 24v and the other is common.
Hello, in order to turn your humidifier on with the furnace the 120 volts coming from your humidifer you must hook it up to a step down transformer, then the transformer will provide 24 volts to you humidistat and solenoid valve. So you need a wire from the HUM on your control board to transformer primary side and a wire from neutral on the board to primary side of transformer. Then you need low voltage wire from secondary side of transformer to humidistat from humidistat to humidifier.
Hi,
No, you need to attach one of the solenoid wires to the red wire and one to the white wire.
So, undo the wire nut with the three wire and hook one of the red or white wirtes to the wire nut with only one wire. Then you sould have a black wire and one of the other red or white wires under each wire nut.
Problem amy be that you now have burned out the transformer that runs your Humidifier. By hooking the red and white wires together you may have shorted that out and killed it.
If you humidifier does not work after hooking it back uo right then you will need to change the transformer.
Maybe I can help. this is 24v so it doestn't matter which wire goes where so here goes. 2 wires from humidistat go to furnace, split one of the wires(not both) so they reach the yellow wires on the humidifier. with marettsconnect one of the split wires to one of the yellow wires. do the same to the other split wire and yellow wire. what you should get is one wire from humidistat to furnace then one wire from humidifier to humidistat and one from humidifier to furnace. hope this helps
if you just replace the unit and it is working, no your do not need the tranformer. The unit is getting power from the furnace. For reference though. The black and white wires are your 120 volts. Black hot, white common. the 2 screws are your 24 volts
hook one wire to the hum screw on the board if there is not a hum screw hook it to the green screw,go up to the humidifier then back down to the common screw on the board that should make the unit only come on when the fan is running. it sounds like the humidistat is not working correctly
I would guess from the info provided that you only have two wires going to your thermostat which would explain why the fan switch doesn't work on the thermostat. You can bypass the thermostat as a first step in troubleshooting. After that it depends on the type of furnace, standing pilot or electronic ignition...
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