Question about Honeywell Programmable Thermostat Heater

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I have a honeywell thermostat model # th5220d1003-0636 & need to know what connections to make for gas forced air heat.

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This is a Focus Pro 2 heat,2 cool thermostat. If you are connecting this to a single stage(1 heat) residential furnace then your connections are: At the thermostat the R and Rc therminals are internally connected so you can connect your R terminal wire from the furnace to the R terminal at the thermostat(this is your 24 volt supply for both heating and cooling. The W or W1 wire (heating) from your furnace you connect to the W1 terminal at the thermostat. The W2 wire from your furnace(if your furnace is a 2 stage furnace) you connect to the W2 terminal at the thermostat. The G wire from your furnace(indoor fan) you connect to the G terminal at the thermostat. The Y1 wire(cooling) from your furnace you connect to the Y1 terminal at the thermostat. The C wire(common or neutral) from the furnace you connect to the C terminal at the thermostat.

Posted on Nov 15, 2009

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Older pictures of honey wells
Paula, remove the cover of the thermostat and look for a model number. The actual thermostat may have to be removed from the sub-base to find it. There may be either a long line of pins on the sub base that matches up with holes on the back of the thermostat when you re attach it....or there may simply be a 3" long ribbon connector that makes the connection.

Once you have the correct model number call Honeywell Customer Service at 1 877 841 2840 and work your way through the menu until you get to 'if you a homeowner push this number'. Once in touch with a live troubleshooter, they should be able to assist you in programming. You should know what kind of system you have, gas, electric or heat pump heat with central air.

You MUST have the correct model number BEFORE you call.

Nov 10, 2015 | Honeywell Programmable Thermostat Heater

1 Answer

Wires don't match the new thermostat posts. The wires from the furnace are Red,Blue black and white The posts in new thermostat are B O G Y not used R and Rc Can't figure which to put
The wire colors are for the following functions ......red - 24 volts white - heat yellow - AC green/blue - blower (fan) red is connected to the R with a jumper between R and Rc What type of furnace/heat do you have ???? Electric. oil, gas .Forced hot air, baseboard, steam, heat pump, or ?????? Different systems use different connections and need a specific thermostat for that application !!!

Dec 13, 2014 | Heating & Cooling

1 Answer

Does thermostat have to be on Auto or On to make my heat come on?? Dont know if i have thermostat problem or Furnace problem. Furnace clix on whenever it wants to, doesnt use the schedule i have...
If the thermostat is wired correctly, and matched to the type of heat you have ie electric, heat pump, boiler, forced air, gas or oil, the heat should run in either Fan ON or AUTO. Maybe you can explain your system a little more in depth...furnace type, M#, & thermostat brand w/ M#.

Dec 12, 2013 | Honeywell Programmable Thermostat Heater

1 Answer

My Honeywell Water Heater Thermostat will turn on for 30 seconds. Then it shuts down- wait 5 seconds turn it off EITHER with the ON/OFF switch OR by turning thermostat to off & back on immediately! If...
Time to call qualified service technician. And watch what that person does to learn about your water heater.
I assume you have Honeywell Icon gas valve. Honeywell makes different several model numbers.

Here is 'typical' Honeywell Icon gas valve service manual for Bradford White, that may or may not apply to your water heater. It shows testing for Icon and disassembly instructions, and error codes.
http://waterheatertimer.org/pdf/Bradford-white-service-manual-44943-D.pdf

Gas water heaters today require yearly service that includes cleaning burner parts and combustion chamber, checking vent and air intake, electrical connections, testing gas valve, checking gas pressure, bleeding air out of gas line, etc. These are things you can learn to do by reading service manual, and making sure you have a spare water heater around to connect real quick if experiment goes wrong.
If Icon gas valve is problem, that control is modular and can be replaced without draining tank.
http://waterheatertimer.org/How-to-install-gas-water-heater.html#troubleshoot

Aug 07, 2011 | Honeywell Water Heaters

1 Answer

I purchased a rth2310b and connected the red wire to the RC and white to w the green to g. It still will not start furnace. This is a gas forced air.
I think there is connection labeled Rh. The reason for having Rc and Rh is that some units have a transformer for the heating unit and seperate on for the cooling unit. If you only have 1 transformer then they have a jumper between Rc & Rh. Rh being for heating and Rc for cooling. Hope this helps. Let me know what you find.

Aug 09, 2010 | Honeywell Programmable Thermostat Heater

1 Answer

Only have two wires on old thermostat,where do i hook them up on a rth2310 thermostat
More information would help but I believe that you are trying to hook up a programmable thermostat to your old heating system which is what? Oil forced air, heat pump, gas? Give me more info and I think that I can help you.

hardrocko

Feb 07, 2010 | Honeywell Electronic Programmable...

3 Answers

Replaced mercury thermostat w/Honeywell CT87K - doesn't work!
You need a specific thermostat for a Wall Furnace it is a Millivolt Thermostat and not a 24v standard thermostat....usually it will work anyway however if the powerpile (generator produces millivolts from the pilot light) is weak it may not be producing enough...or the Pilot light may be dirty and lazy...won't produce enough millivolts ...or you can have bad or dirty contacts or connections....or a combination of any of the above.....a 24v Thermostat and particularly a non-mercury thermostat has too much resistance in it for a millivolt system....as your Wall Furnace (other than the fan) runs on less than 1 volt

Oct 31, 2009 | Honeywell CT87B ROUND HEATING&COOLING...

2 Answers

No hot air
The sv9500m units are notorius for having cracks in the solder connections where the 4 wire plug socket attaches to the board in the gas valve. A short term fix or test is to apply pressure to the wiring by twising it, then try a relight. If it works you have a loose solder connection. To repair this (you assume all liability- there is no room for oops here)- remove 2 small security torx screws holding the plastic cover on. Remove only the half of the cover with the on/off switch sticking though it. It should just lift off. you may have to move it around a little no forcing. The solder spots are now accessable. check & resolder the connections where the 4 wire main connector hooks to the board- put the cover back on & test it. done.

Feb 03, 2009 | Honeywell Electronic Programmable...

3 Answers

Furnace kicks on every 15 mins
fuanace may be oversized and is short cycling it heats up house to fast it is better when they run longer

Dec 06, 2008 | Honeywell Programmable Thermostat Heater

1 Answer

Installing Honeywell RTH7000 - I have too many wires!
check to see if the B terminal is on the new t-stat if connect to it , but this terminal refers to heat pumps and is normally use to energize the reversing valve on the outside unit and not used on ac units , but normally the tag O/B is the same terminal on therostats

Oct 26, 2008 | Honeywell Programmable Thermostat Heater

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