 |
|
| Browse | Ask | Answer | Search | Join/Login |
|
|
||||
|
Thermostat change with old system with Y1, W1 and W2
I currently have a Honeywell Chronotherm III thermostat which I believe came with the house. I'm trying to replace it with a Honeywell 5-1-1 Day (RTH7000 Series) programmable thermostat. After I disconnected the old one and started the new one, I got to a point where it says "If your old thermostat has Y1, W1 and W2 wires, stop now, and contact a qualified contractor for help. What does this mean? A contractor will charge around $200 just to show up and it doesn't seem worth it. Can someone help me with this. I'd like to finish this myself.
|
||||
|
||||
|
Usually it means your new thermostat is not compatible with your old system.
It is possible one relay or two relays must be added for for proper operation OR it will not work what so ever on your old system. This is why they have professionals that deal with these problems. It would be easier to do a better job shopping next time so you get the correct thermostat to start with. But here again a professional would have never purchaced a thermostat that would not work on your old system. Life is a learning experience. BTW what is the EXACT complete model number of your old thermostat. I will see if there is a conversion. http://customer.honeywell.com/techli.../69-1900EF.pdf |
||||
|
||||
|
The system doesn't show anything that specifically labels a model number. There are a bunch of numbers that look stamped. One number says Rev. 97-3829. Antoher isT8611R10009633 and the last is 199459E. Unfortunately, it looks like the previous owner of the home, while he kept papers for everything else, did not keep the manual fot this. The house was built in 1978. Thanks for your input.
|
||||
|
||||
|
Your old thermostat is a two stage heat one stage cool thermostat and might not be compatible with the new one. Read the diagram of the old thermostat below.
See here on page 4. http://customer.honeywell.com/techli...0s/69-0348.pdf |
||||
| Question Tools | Search this Question |
Add your answer here.
Check out some similar questions!
We had a new AC system put in this summer. I turned it off as the weather moderated, but even though the thermostat is set to off, the AC runs. It also looks like the heat does not run. It was chilly last night and I turned the thermostat to heat on and set the temperature appopriately, but no...
Recently I remodeled a house and gutted the interior. My son-in-law asked if I wanted to look at the old Honeywell T87 thermostat before he removed it. I told him to remove it, after all, how hard is it to rewire 4 wires. When it came time to install the new digital Honeywell thermostat,...
OK. I currently have a White-rodgers 1F58 thermostat and I want to change it for a digital Programmable T-stat.. On the White-Rodgers the wiring is as follows. 6 wires are used w/ 1 jumper R- Red wire G- Green Wire O- Orange Wire W2- White Wire w/ a Jumper wire to - E C- Blue Wire Y-...
Hi there, We just bought a house with radiant heat. This is our first experience with that type of heating system. It is wired to have 3 different areas in the house with their own thermostats. They're very basic thermostats, and I would like to change them out for digital programmable...
View more questions Search
|
