All digital thermostats are "universal" for the most part. Remove what you have and verify that you have 4 wires connected or 5 wires. If it's a heat pump it's possible you have more wires then that. Depending on what you have, this will determine what you will want to purchase. Most hardware stores/home improvement carry t-stats.
SOURCE: Intertherm to Honeywell thermostat
Typically if you have a yellow wire in the "y" terminal blue is used as common or "c". As far as your jumper from rc to rh, that will depend upon what type of heat you have. If all of your heat and cooling come from your packaged unit outside, yes you will need the jumper. If this does not work maybe you have a bad breaker or transfomer.
SOURCE: Replaced thermostat on FA4ANF030 with Honeywell model rth3100c does not work
if you have a newer t-stat your heat pump reversing valve is either o or b depending on the type of system you have
SOURCE: changing a room thermostat a potterton to honeywell t6360
I think I've done it - but don't take this as absolute truth.
For the Honeywell T6360B the original Potterton wiring should be rewired as follows:
Brown [Live] goes to terminal 1; Blue [neutral] goes to Terminal 2 and the yellow/green [which is not an earth but a switched live - i.e. gives live to the heating system when the thermostat clicks in] goes to terminal 3.
Obviously all done with the power isolated and when it was switched back on we had heating again :o)
It's been on over two hours now and all seems fine.
SOURCE: how to remove thermostat cover to replace
the cover pulls off if it has a green screen then most likely takes batteries if does not light up then no batteries with a small piece of insulated wire jump from green to red if indoor fan does not come on then transformer bad
SOURCE: how do I program my honeywell basic thermostat?
Go to
myhome.honeywell.com
and search for a manual for your model number thermostat on the right hand side of the page.
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If you are looking for a programmable, any 5,2 programmable will work(5 weekday 2 weekend). This means when programing you program the week days and weekends separate. Or, any non programmable should work.
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