Hi all, been trying to solve a problem with my mum's CH/HW system and I could use a little advice.
The problem is, the timer which is a seemingly very basic Wickes rwb7.cw only allows heating and water to be on together (the original programmer landis & gyr rwb200 had them seperate) - and they only go off when the mains switch next to the programmer is used to cut the power. The boiler seems to be on almost constantly, only stopping for a few seconds before firing up again. The end result is the hot water gets far too hot (to quote it's 'jumping out of the tap')
I have replaced the mid position valve with a Drayton MAI/679-3 but this doesn't seem to have helped, the W,M,H lever stays on 'M' and the manual lever is firmly in place pushed in to the right - is this meant to be released with a little force?
Would replacing the Wickes timer help (it actually states in the instructions, not suitable for replacing the rwb200 as you are replacing a timer with a programmer but it was anyway... ) or could there possibly be a thermostat fault?
Many thanks for any help.
The problem is, the timer which is a seemingly very basic Wickes rwb7.cw only allows heating and water to be on together (the original programmer landis & gyr rwb200 had them seperate) - and they only go off when the mains switch next to the programmer is used to cut the power. The boiler seems to be on almost constantly, only stopping for a few seconds before firing up again. The end result is the hot water gets far too hot (to quote it's 'jumping out of the tap')
I have replaced the mid position valve with a Drayton MAI/679-3 but this doesn't seem to have helped, the W,M,H lever stays on 'M' and the manual lever is firmly in place pushed in to the right - is this meant to be released with a little force?
Would replacing the Wickes timer help (it actually states in the instructions, not suitable for replacing the rwb200 as you are replacing a timer with a programmer but it was anyway... ) or could there possibly be a thermostat fault?
Many thanks for any help.