New thermostat installation problem
Hoping someone can help.
My Honeywell Magicstat thermostat died (just kept saying battery low regardless of changing the batteries) so I purchased a very basic Lux non-programable digital thermostat. The previous owner of my house appeared to have used ethernet cable to install the thermostat but the wiring was pretty straight forward...or so I thought. There are a total of 8 wires:
red and red with a white stripe twisted together and were connected to the R screw on the old thermostat
blue and blue with white stripe twisted together and connected to the G screw on the old thermostat
orange and orange with a white stripe twisted together and connected to the Y screw
and finally 2 black wires not connected to anything
When I hooked up the new thermostat I hooked up the red wires to the RH, the blue wires to G and the orange wires to Y. The furnace comes on even though the it is set to off, and it won't shut off unless I go to the switch next to the furnace and shut it off.
I have a standard Payne HVAC unit no heat pump. I am sure it is just a matter of wires not being connected to the thermostat correctly but I am at a loss with only 3 wires which terminals on the thermostat to hook them to.
No DIY help here. Call a professional before you harm yourself, others, or your equipment.
What he said.
Originally Posted by Brent Ridley
TURN THE SYSTEM OFF AND LEAVE IT OFF till a PRO comes in and wires it correctly for you.