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I was changing the batteries in my Honeywell RTH2300/RTH221 programmable thermostat and dropped it on the carpet. It exploded and all the parts were scattered on the floor. I put it back together, the best I could, but it isn't working right. It works, but not the way I had it setup. There is no display, so I can't change anything. I think I reassembled it correctly, less what appears to be a small magnetic strip. I don't know where that goes and I'm not absolutely certain I put it back together correctly.

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Thermostat is broken need to replaced

Posted on May 17, 2017

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Posted on Jan 02, 2017

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SOURCE: why will my programmable honeywell thermostat not keep changes to my schedule

Could be batteries need replacement

Posted on Apr 28, 2013

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Cannot change the cooling thermostat from c to f for rth2300/rth221


go to the menu and touch to change the Ceantigrade to Fahrenheit.

May 20, 2014 | Heating & Cooling

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How to wire a honeywell rth2300/rth221 to a five wire connection


I am not familiar with this particular thermostat; however, here's some general information; I hope this solution will help you troubleshoot.
Multiple Thermostats set in 1 zone will conflict; the one with the lowest setting will be the determining Thermostat. Here's an option you can try yourself; my solution is 'hard reset' the thermostat - afterwards, i'm outta options. invest in external thermometer battery/natural types; & manually turn t-stat ON or OFF; Additionally, keep an eye on how much draw your AC is doing on your meter.

setOFF manual; however do NOT change settings or power-off t-stat. I'd keep it on what you had intended it from day1. However, some may debate to turn everything off beforehand. personally, myself, poweringOFF the switch connected to your t-stat works. Remove battery and reinsert inverted; wait (5sec-1min); remove; wait 1min ('debatable' timeframe 5sec - 1min); reinsert batteries correctly; if you have a programmable thermostat; do the same with the hit 'reset filter' held down & wait 5-sec1min; observe roomTemp reading. May I suggest to keep an extra thermometer around to determine if temperature reading from the thermostat correct? Friendly reminder to turnOFF 'auto' mode during this hard reset. If reset requires reprogramming your t-stat, do whatever required to set your desired setting. cheers. best of luck.

May 11, 2014 | Honeywell Programmable Thermostat Heater

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5 ton goodman package unit not coming on


If you look on the install manual. It says it will work for a heat pump without backup heat. No heat strips.........If you do not have strips the guide says as follows

"PLACE A JUMPER (PIECE OF WIRE) BETWEEN Y AND W IF YOU ARE USING A HEAT PUMP WITHOUT AUXILIARY/BACKUP HEAT." if this dosnt work check the fuse in the air handler you may have blown it if you did not turn the unit off before installing.

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1 Answer

Honeywell RTH2300 says Heat On, but furnace isn't running.


Your tstat is not the problem. I've not yet worked on an oil furnace. I'm way down south. But either way, if your tstat was calling for heat(heat on), and you pushed a reset at the furnace, more than likely that reset is a safety. OK to reset, but now what ever that safety is preventing from happening, has failed and can not be reset until repaired. The reset should be an automatically opening switch upon unsafe operation. And manually closed to "reset" the safety. That safety is connected to something that is not working properly. Hope this helps!

Mar 02, 2017 | Honeywell prgrammable thermostat RTH2300B

1 Answer

Blower runs continously....


Hi Kathi,

I think its thermostat or ,thermo sensor is out of order and if it is controlled by electronic circuit it can be faulty.
another thing sometimes output contact relay for motor is faulty it want turn off itself when the circuit energize the coil.

please call electrician who can handle.

regards,
nuwan.

Jan 10, 2014 | Honeywell Programmable Thermostat Heater

1 Answer

Need to know if it will work


Think you need a different thermostat...you will need one for line voltage, not low voltage.

Dec 08, 2013 | Honeywell Programmable Thermostat Heater

1 Answer

Installed the Honeywell RTH2300/RTH221 but the old thermostat was removed by someone else. Since the original wires were not labeled, I simply attached them to the new thermostat by following the letters...


This appears to be a thermostat installation that was made without regard to wire code. The Honeywell material I have suggests it may be necessary to check connections at the furnace end and work back to the thermostat. There may be compatibility problems between the number of wires in the old installation and terminal connections in the new thermostat. Honeywell may be able to help at 1-800-468-1502.

Oct 29, 2013 | Heating & Cooling

1 Answer

Old thermostat has 2 wires. how to I wire my honeywell rth111/rth221? thanks, Rich


http://customer.honeywell.com/techlit/pdf/PackedLit/69-2060EFS.pdf this should be the instructions for that t stat. best to just look at which color came off what letter and replace back on that letter. you dont know if the last guy wired it right

Feb 13, 2011 | Honeywell Programmable Thermostat Heater

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