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Honeywell T8000C Thermostat Problem
If you have a volt meter, remove the thermostat off from the mounting plate and check for 24 volts AC across red (R) and White (W). Then check across Red and Yellow (Y). If you do not find any voltage, follow wire as much as you can all the way back to the air handler that is connected to it. Look inside and see if there is a small Auto (car) type of fuse in the wiring harness. Test and replace if necessary. Jump out the Red and Green terminals on the air handler and replace the door. See if the blower turns on. If so, you have narrowed it to the wiring to the thermostat. If not, you have a power problem and will need a technician.
In my case the blank thermostat was indicative of a problem at the furnace. A blown limit switch to be exact due to a neglected filter.
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Honeywell T8000C Thermostat Problem
If you have a volt meter, remove the thermostat off from the mounting plate and check for 24 volts AC across red (R) and White (W). Then check across Red and Yellow (Y). If you do not find any voltage, follow wire as much as you can all the way back ... Air Conditioners
Hello I am installing a new slant fin boiler system, EC-10 oil fired unit. 2 Zone Valves are V8043G. My problem is how do i wire in the Stack Relay switch type RA116A all equipment is Honeywell except thermostats they are White-Rodgers 1F78. The Honeywell system in the boiler is L7224/L7248 Electronic Aquastat. Plus how to wire in thermostat. Thanks for your help Rob. email addy [email protected] if you have to send me anything. Thanks again
... Honeywell Air Conditioners
I have a carrier A/C system controlled by a carrier TSTATCCBAC01-B non-programmable thermostat with 4 wires connected as follow: white-W, green-G, red-R and blue-Y which I want to replace with a Honeywell T8601D programmable thermostat that has the following terminals available; C, OT,OT,R,B,W,Y,O, and G. My problem is that when I connect the wires on the Honeywell to the same terminals as they were on the carrier the system seems to work but only the fan turns on while the commpressor stays off
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The teperature in the house is 70 F , the thermostat is set at 65 F , but the furnaise still go . It is a Duo-Matic 20kw air forced electric furnaise and the thermostat is a numeric White -Rodger . It is new but with the previous one it did the same , wich was an Honeywell. Where should I look first , to solve that problem that is costing me a bundle in electricity . If you think you can help me I would be a very happy camper
Lower the thermostat setting. If the house is 70 degrees, and the thermostat is showing 65 F, it may be in an area where the temp is different than the rest of the house. Lower the temp on the thermo. ... Air Conditioners
I have an amana heat pump central a/c and I changed the thermostat to a honeywell and it didn't solve the problem so I reinstalled the amana thermostat now it won't power on what did I do?
Did you shut the power off to the furnace before you changed the stat? If you didn't then you could of tripped the cicruit breaker on the transformer or fuse or you could of shorted out the transformer. I would check for voltage between R and C on t ... Air Conditioners
I have a Honeywell T8400C 1024 thermostat. the last two nights, our heat continues to run without shutting off at the pre-set temperature. We have woken up to 81 degrees in our house. What is the problem and how do we fix it? We have tried resetting the thermostat, but it still continues to run. Thanks.
Hello\015\012Try taking the batteries out for 5 min,or disconnect power for 5min.\015\012To clear it out.\015\012Then re input all your times days and temps,\015\012\015\012Is t stat in a cold location near a door or win ... Air Conditioners
Good morning I have a honeywell programable thermostat and when I bought the house there was no instruction booklet. The heat is shutting off at night The furnace guy is coming sometime today and I will be charged a lot of money (which I don't) have if the problem is not with the furnace and I am sure it is the thermostat. I am sure it has something to do with the setting, I think I hit run program instead of hold the other day & I think it threw everything off. Help help help
Mebnme, is right, manually setting your therm and holding hold, will override any pre-setting program. Also go to honeywell website, order a manual and program your therm yourself, what model do you have? ... Air Conditioners
I HAVE PROBLEMS WITH MY T87 HONEYWELL THERMOSTAT THE SETTING ON THE THERMOSTAT AND THE TEMPERATURE DO NOT MATCH WHEN THE AIR IS ON THE SETTING COULD BE AT 75 AND THE AIR RUNS UNTIL IT IS 68
T87 usually are about 5 degrees off. sometimes more because of dirt and dust.get a digital ... Honeywell Air Conditioners
I have a honeywell PA404A pressure control switch on my home gas steam heating system. I'm having a problem with the switch turning off the system. It will only come back on if I turn the top screw all the way out, then back down to approx 5psi. At this point the heat will turn on but when the thermostat shuts down the system it will not turn back on when calling for heat unless I adjust the screw again. Also, the switch will only turn on the system when set at 5 on the dial on the inside. Any i
This may be caused by accumulation of sludge in the steam trap (the looped tube that connects the pressuretrol unit to the boiler). the sludge restricts the pressure from reaching the diaphragm in the pressuretrol unit. So it gets a false reading. ... Air Conditioners
I installed a new Honeywell Programable thermostat, When I turned on the AC it turned on the Heater... I followed the wiring but some of it is not making sense... G=Green, Y=Yellow, R=Red, C=Blue, W2=White, Y2=Brown... The problem is that I have an Orange and Black Wire left over, Which one do I connect to W? and do I have the wiring right... my unit is a central Heat & Air, not a heat pump.
Hi, the problem is you have bought the wrong thermostat for the unit if it is not a heat-pump. A heat pump will have W-1, W-2 for heat strips, and Y-2 is for 2nd stage cooling. G is Green for Fan, R is Red for Power, Y is Yellow for cooling, and W wo ... Goodman Air Conditioners
T8000c honeywell thermostat is blank
This unit doesn't require a battery. It runs off the 24v from the unit. Check that your transformer is still working. Check the control board for 24v pwr. and main pwr. Check your breaker to the unit. It could be as simple as a bad stat too. Yo ... LG Art Cool LA121CNP wall/window Air Conditioner
I have an intertherm electric furnace FEH-A020, with multispeed blower installed when A/C added. My problem is blower operation. at the end of the cooling season with fan set to auto operation the fan ran continuously. Now that I've turned the unit back on for heat the blower will only function with the switch in the on position (continuous operation), in auto mode the heating elements come on with the signal from the thermostat (Honeywell CT3400), but the fan does not. I checked the fan relay p
The model of T-stat you gave comes up as a discontinued model on Honeywell's web site, but it looks to be a manual stat that type of stat would have to be wired with a summer winter switch with electric heat, allowing it to turn on the fan with a cal ... Intertherm P3RA-048K Air Conditioner
We have a honeywell chronothern iv plus thermostat heater/cooling system which is not working. We suspect it is a blown fuse problem. Do you have any pointers of where the fuse is located?
Hello, typically the fuse will be located in the control board. The control board is located inside the blower compartment, will be a 3-5 amp fuse. If the the thermostat is blank sometimes a condensate safety switch can kill power to tje thermostat i ... Air Conditioners
I need schematics for a Honeywell EMM-3 Electronic MiniZone Panel. I have already diagnosed there is a problem on the circuit board, and have removed the panel from thermostat circuit. I would like to troubleshoot the board to component level.
Hi,\015\012\015\012I have included these links which may help. This link contains all the downloadable data on this unit. Scroll through documents in box at bottom of the link page to see all readily available documents and s ... Honeywell Air Conditioners
Having problems wiring a HONEYWELL RTH3100C old thermostat it was a trane XT500C
... Honeywell Air Conditioners
My honeywell focus pro 5-1-1 wont shut off..its showing off on programmable thermostat but its still blowing cold air and i have it set to 90degrees...my problem indicator light on my unit is blinking 4 time meaning something is wrong with my "OPEN LIMIT SWITCH"...what should I do..really not a ac/heating guy...please help!!!!
Turn the power off at your furnace. Take the top front cover off at the furance. The high limit switch is right in the middle of the unit above the burrner tubes. Two low voltage (24 volts) wires are going into it. It is about 2.5-inches high and ... Air Conditioners
Our propane fireplace has a honeywell valve #VS8421 which is not opening freely any more, all voltages exceed recomendad values and are ok,pilot works find, thermostat is ok.. "valve will ouen if lightly tapped on with fingers or screwdriver"" ?? can you suggest what I should try to correct this problem Thanks
... Honeywell Air Conditioners
My home heating system consists of an ancient (but efficient and flawless) 1924 Richardson steam boiler. It was originally installed to burn coal, but in the 1930s a Honeywell Janitrol natural gas system was installed. This, too, is still working nearly flawlessly, but there is one, minor problem: The 2.5-foot-long bi-metal internal thermostat, which senses whether the pilot is lit (one end sits in the pilot flame) wore out some years ago. I cross-wired the system to make it appear as though
Hi; I first want to know if You can use a millivolt generator operated pilot valve sized to fit Your gas supply line. Secondly does Your existing main gas valve supply the pilot gas. This is very important and I need to know before I can give You op ... Air Conditioners
Installing a Honeywell Programmable Thermostat with my Bryant Puron HVAC System
The wiring should be the same as the old one hook up same as the old wires there is nothing diffrent ... Air Conditioners
Honeywell thermostat is out. Tried replacing battery but still out. Trying to replace with temporary Honeywell thermostat but can not figure out wiring. I have a white, red, and blue wire. The original thermostat is a Honeywell Vision pro IAQ.
You will need a voltmeter. I believe 2 of the wires (probably the white and red are the power; either 12 or 24 volts) and the blue is the switch leg.\015\012\015\012If you don't have a voltmeter, you can twist the blue and the white toget ... Ruud UAMB Air Conditioner
A/C thermostat - strange problem
Digital thermostats are designed with CPH (cycles per hour) to prevent short cycling of the system. It is normal for them to jump up one degree with a change in setting. This helps to control the Cycles per Hour as well as to prevent "undershoot". I' ... Honeywell Air Conditioners
Honeywell prog thermostat not working, displays the time and -AC
The thermostat may have a reset function by taking the batteries out and letting it sit for 5 or 10 minutes until it powers down all the way then it may reset. Give that a try and put the batteries back in. If this doesn't work you may have to replac ... Honeywell Air Conditioners
I have a problem with my central heat / air unit. As it is getting cold now, I am using the heat. My problem is that I must turn the thermostat to the on position to get the unit to come on. In the auto mode, nothing happens. I can get very cold but not ever kick on until I move the switch to the on position. In the on position it works fine. Thinking that my problem was with the wall thermostat, I replaced that. I do not remember having this problem with the A/C. What should I look for to fix t
Look on your thermostat one switch (for the fan) will say off/on/auto. The other switch (for operation mode) will say off/ac/heat. The switches should be set at fan auto and mode heat. Some have an auto for the heat/ac if that is the case your thermo ... Air Conditioners
Thermostat problem Thanks for replying. It's a 1998 National Tropi-cal motor home. I do not have a good manual on the Duo-Therm thermostat or heater. The picture on the link you sent me looks exactly like the one I have. The part # for the thermostat is 3106463.007(located on the back of the old thermostat). I see that other people have had problems with this same model. I sprayed the push buttons on the unit with contact cleaner and it had no effect. I'm wondering if it is definitely th
Try this # Phone: 1-800-544-4881 Ask for tech assistance, if no luck ask for sales rep. Have your Make, model & serial #'s ready for both thermostat you are trying to use & your AC unit. They should be able to tell you if that thermostat w ... Dometic Rooftop RV Air Conditioner
I am changing an old circular Honeywell AC thermostat to a new Honeywell VisionPro TH8321U thermostat. There are two wires coming from the old thermostat and I want to know which terminals do I attach the wires to on the new thermostat?
Ac only?r and y ... Honeywell Air Conditioners