faulty timer programmer !!!

[jamesdownie]

i think my electronic timer programmer box for my central heating appears to be faulty as when i turn on my hot water switch the heating comes on as well..........
do i need an electrician or a cent-heating engineer to fix this and could i do it my self if i bought a new timer box..

would this be difficult for a novice ???

 

[bathjobby]

And your type of system is ?

 

[jamesdownie]

its a ACL LIFESTYLE LP112 24 HOUR ELECTRONIC PROGRAMMER

 

[lookinn]

If it is a faulty programmer its easy. Turn off the the supply to the heating and programmer. You will find 2 small screws on the bottom of it. Partly unscrew these hinge the unit up and remove. Then replace with new one it just plugs in.

 

[Job_n_knock]

Then programme it

 

[Pensdown]

And your type of system is ?

I think bathjobby was asking what kind of system, ie - 3 port valve, 2x 2 port valves, combi, gravity?

|t could be the programmer but I would check the control valve(s) first.

 

[Lectrician]

Has it ever worked?

Could be poorly plumbed, causing the return from the cylinder to pass via rads........Caused by not grouping rad returns together before hitting boiler.