Honeywell RTH230B a/c problem

Do you mean the Honeywell RTH230B programmable thermostat? Most of the Honeywell thermostat manuals are available here: http://yourhome.honeywell.com/en/faqs/thermostat . Scroll through the pages to find the RTH230B or use the search feature. The search engine found the installation and user guide in three different languages, see https://yourhome.honeywell.com/en/supportsearch#q=Rth230b . The direct link to the manual in English is https://customer.honeywell.com/resources/techlit/TechLitDocuments/69-0000s/69-1800.pdf .

I hope this helps.

Cindy Wells

nothing to do with filter follow thermostat set up parameters may have been locked

If you need further help, I’m available over the phone at https://www.6ya.com/expert/mike_9693b5ad75773352

I will assume this is a central air conditioning system. From what you tell us about the symptoms a few things come to mind for you to check.

1. Change your thermostat and see if that cures your problem.
*The following steps requires the use of a multimeter and work around electricity, use due caution or call a professional.*
2. Check the contactor inside the outside unit while you have the thermostat calling for cool and see if it is pulled in or if it is stuck. If you are not comfortable around high amp electricity then please call a professional in your area to make these checks.
3. Check to see if the thermostat wires going to the outside unit are sending 24 to 28 volts to the unit. This will tell you if the problem is outside or inside the home. If there is no voltage there then check at your furnace to see if the t-stat is sending the power on the Y connection.

There is much more to check but this should get you going in the right direction and will locate the problem in most cases.
Hope this helps.

you will have to reprogram it according to the operating manual.
The manual is available on www.manualnguide.com

This thermostat will not work for your application. You need a Heat Pump thermostat. A comparable stat would be a Honeywell TH4210D1005

for starts, check fuses in disconnect box by condensing unit

Do you have a heat pump? If so, not compatible. What i did was move the jumper on the thermostat (RH RE). This is on the inside of the thermostat - NOT the red jumper!!! and got the AC working (the heat had already worked during the winter, problem only became apparent when I needed to use AC). I may have to change the jumper again when the season changes...not sure yet.

Click on the link below to download or view the manual for your Thermostat.

http://www.manualnguide.com/download/manual-guide/honeywell-rth230b-thermostat-operating-manual.html

Good luck! :-)

THIS TYPE has been deemed defective! changeout to a different type.

Sounds like a relay sticking. Possibly in the thermostat or possibly the furnace relay at the furnace. The next time it happens, unplug the thermostat from the wall. If the furnace still runs then it's the furnace relay.

Hope that helps...

Geno