My first post! HVAC problem... - DIY Chatroom

Deano2450 · 10-25-2009, 03:26 PM

A few weeks ago, I noticed the a- coil was froze up and shut it off to let it thaw out. Went back to turn it back on and; nothing. Checked all connections and am getting power to all but the rocker switch (on-off-auto). Got power from black to white when connected them, but not when the red terminal was involved. I don't have a Fluke or anything like that, so I was using a circuit tester (red and black wires and a light) I'm curious as to whether the blower motor is going bad, the thermostat is going out, or what the problem is.

Any help will be appreciated highly...

Plumber101 · 10-25-2009, 04:02 PM

Look at the control board for evidence of water that has dripped on the control board.

It would also help if you would post brand and model

Deano2450 · 10-25-2009, 08:24 PM

Nordyne
Model # E1EB-Q15HA

While I was looking at the model numbers and such, I remembered that a friend told me if I didn't have a volt meter that I could test the motor by jumping the red and black or red and yellow at the auto-fan-on rocker switch. So I did that and the blower came on. I'm guessing all I need is the switch? The old one has no indentions. You know, on-click/ off-click/ auto-click? Three way switch, right? It's a "no way" switch right now. I can't use just any type from an auto parts store?

Plumber101 · 10-25-2009, 08:57 PM

Not finding this model number

Is this in a mobile home?

Where is this switch located?

Deano2450 · 10-25-2009, 11:32 PM

Yes, it's in a mobile home.

The switch is mounted on the same panel that the blower is mounted to.

kennzz05 · 10-26-2009, 06:37 AM

a switch is a switch is a switch,any single pole double throw should do. as long as the amperage rating is correct

Deano2450 · 10-30-2009, 05:52 PM

I replaced the switch and now the blower will run, but only in the "on" position. In the auto position, no matter what I have the thermostat set on, it will not come on. Bad thermo?

If it comes out right, I've attached a pic of the guts of the thermostat.

thehvacguy · 10-30-2009, 07:06 PM

First take the wires off of your thermostat. Then take a jumper wire and jumper the red wire and the white wire on the thermostat. This should cause the heat to come on. If you jumper red to green the fan will come on. If you jumper red to yellow, the ac should kick in outside. If those things happen then you know your thermostat is bad.

Deano2450 · 10-31-2009, 01:56 PM

OK. I'll try that.

Wait. Do I have remove all the wires from their terminals and then jumper them?