I never touch electricals, plumbing, heating, etc but times are hard and I'm looking to try and do some work myself for once and save some cash and tea bags
Basically my Honeywell ST699 Central Heating and Hot Water Programmer is working but the time display has gone "doolally" (I think that's the technical term) meaning my only options are Off or Constant therefore want to replace it.
I've read up that the ST799 uses the same backing plate and looks to be pretty much the same unit with the only difference being it offers 7 day programming rather than just 24 hours on the ST699.
Finally, my question, is the installation of this as simple as disconnecting the wires from the ST699 and reconnecting them to the ST799 in the same fashion? It may even be as easy as removing the ST699 front cover and replacing it with the new ST799 cover (i.e. leaving the existing wiring on the backing plate in place and just replace the front screen)?
Like I say, I never touch electricals normally but I'm quite technically minded and this "looks" like a simple job either way. Can someone confirm if what I am saying is correct or if I should be calling in a electrician?
Basically my Honeywell ST699 Central Heating and Hot Water Programmer is working but the time display has gone "doolally" (I think that's the technical term) meaning my only options are Off or Constant therefore want to replace it.
I've read up that the ST799 uses the same backing plate and looks to be pretty much the same unit with the only difference being it offers 7 day programming rather than just 24 hours on the ST699.
Finally, my question, is the installation of this as simple as disconnecting the wires from the ST699 and reconnecting them to the ST799 in the same fashion? It may even be as easy as removing the ST699 front cover and replacing it with the new ST799 cover (i.e. leaving the existing wiring on the backing plate in place and just replace the front screen)?
Like I say, I never touch electricals normally but I'm quite technically minded and this "looks" like a simple job either way. Can someone confirm if what I am saying is correct or if I should be calling in a electrician?