20 Most Recent Honeywell TH4210D1005 Heater Questions & Answers

google the model number on the stat..It will take you to one of honeywells site, where you can download the instructions.

All gas furnaces have a pilot light. On the On/off dial, look for the word "pilot" turn it to pilot and press. You should be able to find where he gas is coming from(small stream) let go and air out the area. Press in the button and apply a long match or torch to light the pilot. Keep pressed for about a minute, then let the button go slowly. If it stays lit, turn the dial to 'on' then the dial at th thermostat should do the rest.

It depends on your system some will only work with hot water on and heating do you have two zone valves?

Sounds like either a short between the G and R t stat wires or the relay in the control board is faulty. Easy way to check is remove the G wire from G terminal on the control board, if the blower stops, there is a short in tje t-stat wiring, if it continues to run a new control board will be needed since the relay is part of the board.

what do i do?

Sounds like it's low on refrigerant.

Red (power) from furnace to thermosat R ...... White(heat) to W on thermostat

http://customer.honeywell.com/Business/Cultures/en-US/Products/Applications+and+Downloads/

Here's a link ...... http://www.honeywell-thermostat.com/manuals/th4210d1005manual.pdf

if your talking about your T stat control for heater will not turn on replace it it,s bad

http://www.honeywell-thermostat.com/manuals/th4210d1005manual.pdf. does this help you?

try this. open the front of your furnace and look for the thermostat wires. i' dont know what you have but anywhere from 2 to 6 wires in something like a phone wire .find the termial board and take the red wire off. then close the furnace back up making sure the doors are on correctly.did this stop the frunace from running? if so you have a short in the thermostat wiring. check it to see where it is shorted out .replace the red wire and away you go.

http://customer.honeywell.com/honeywell/ProductInfo.aspx/TH4210D1005. go to the bottom of the page and download the instructions

For temporary heat while you shop for a new thermostat, take the wire off terminal R and cross it with the wire on terminak W. This will start heat cycle and will run as long as you have the wires crossed. Do not keep wires crossed more than 10 minutes each time you do it.