Hi

Just an update to see if this may help find a solution:

I reinstalled my old thermostat to see if it would fix the problem. However, the fan now runs continuously with my old thermostat.
Could it be the wiring or maybe did I short it out when I was installing the new thermostat and cause some other damage to the controls in the furnace.

As soon as I connect the red and black wires the fan starts running and does not stop unless I disconnect them. THe green wire seems to have no effect.

Hi all

My system uses a gas furnace and an electric air conditioner.

I have decided to install my Noma 5 + 2 Programmable Thermostat model 52-2557-0 from Candian Tire. There are 4 terminals on the back
G R Y W

My old thermostat was a Honeywell FocusPro TH5000 Series

I have a Red Wire, Black Wire, Green Wire and a Blue Wire (which is my White I believe) These were all hooked up to the honeywell in the following manner:
Rc Red wire. R Black wire These were jumpered together.
W had the blue wire
G had the Green wire

I have installed my new Noma like this:

Both the Red and Black wires going to R
I have BLue going to W
I have Green going to G

There was also a brown and an orange wire that were not being used by the old thermostat. I did not connect these

The heat works correctly. I did not test the A/C since it is winter.

My problem is I can't get the fan to turn off. It runs constantly regardless of if it is set in Auto or ON in the controls.

Thanks for your time;
Logan

Hi Logan -
I don't know if this will help you or not, but I'd take a look at the fan relay. First turn off the power, then look at the fan motor and follow the wires from it to see where they go. Hopefully, you'll see the relay (http://img.diytrade.com/cdimg/305493/7252734/0/1225423437/HLR8400-1AAB1AB_SPNO_14A_12VAC_Fan_Relay.jpg) close by. It might actually be on the control board itself.

Give it a good tap with the handle of a screwdriver to see if you can "unstick" it. My theory is that the fan relay is stuck closed, keeping the fan running all the time.

Good luck,
WallyH