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Ok thank you.

Hi everyone. I have a leaking aquaLisa aquastream shower with a leak at the front of the cartridge where the splines of the mixer tap attach. Anyone know if this is easily and quickly fixable - as it looks like it ‘could’ be an o-ring that’s perished? Thanks all!

Update. Have replaced the ZA5 actuator with an MA1, and have checked all wiring is as per Drayton instructions. All looks fine. When Powering up system I can get hot water working about 50% of the time. When hot water is working ok, turning cylinder stat down shuts off heat and after a few...

Right - seem to have got h/w working. Found a loose connection in terminal box on the blue wire from the programmer. Turned power back on, selected h/w and pump and boiler fire. Cylinder stat working ok. But, c/h still seems to be a problem. With h/w off and room stat set high nothing happens...

Thanks Hugh. definitely helpful thanks - especially if I have to replace with a different head and check I have y-plan setup.

Ianmcd - thanks, I did wonder that when I was looking at the wiring and programmer - but it seems a little odd, as the old BG head was a 2 port model, and g/f said she hasn't ever had a problem before. Is there any way I can tell from the valve itself whether it's a 3 port, or just a diverter?

Sorry muggles. Predictive text changed you to 'niggles'

Thanks niggles - Sorry for the long explanation - was trying to give background in the absence of specific knowledge! The 'new' installation was done by a local contractor circa 2 years ago and g/f has no idea who it was as was done under a 'scheme'. She has no paperwork! The BG valve looked...

I'm a bit stumped! Girlfriend had a new boiler and controls installed circa 2 years ago. gas cindensing boiler, 7 day timer/controller with independent heating and hot water controls, and a wireless room thermostat. Recently hot water has only been working intermittently and there's been no...

Heating engineer visited this evening - and sorted the problem!! Both motorised valves had +240v at both the orange and grey wires! Frost thermostat was not firing boiler when activated. Engineer got some weird voltage differences across terminals in the boiler. Then he noticed that...

Well as it's the last thing I can realistically disconnect, thought I may as well give it a try.....but surprise surprise - pump running, boiler fires!

Well, I think I'll have to give up on this! Just disconnected the frost thermostat, both motorised valve switches, took the programmer off the back plate all at the same time, put the power back on - and yes, you've guessed it, pump on, boiler fired up! So seems like its almost certainly...

Have just repeated test with system cooled overnight - with both grey wires disconnected and mains power restored the pump ran instantly and the boiler fired a couple of seconds later (programmer set to off)! Any last suggestions before I resort to getting an engineer out? Many thanks for...

Well Couldn't wait til tomorrow to try! But disconnected each valve grey wire in turn and then both together and still the pump runs! Looks like my options are running out!

quote] I would never assume a microswitch was operating just becase it was clicking! To professionally test them you have to measure the contact resistance on each position! Tony Hi Tony, no I realise that - what I meant was that as they were both being actuated correctly and...

update: both valves activate the microswitches correctly and these click in and out nicely and theres' no clear sign of which may be at fault. I'm thinking I'll have to obtain a new motor and try swapping one at a time to see which is at fault. Unless there are any other useful tips forthcoming!!

Thanks Namsag. have just checked valves - both appear to be opening & closing with H/W & C/W activation. If its a microswitch on one of the valves that is keeping pump switched on - can this be replaced or fixed separately, or is a new valve assembly needed. Would this also be initiating...

Evening All! I wonder if I can get some help as to what's not right with my CH/Hot Water. Circulation Pump is running 24/7 and boiler fires at odd times even through the night when programmer not 'on'. Previously I thought this was just the frost thermostst kicking in - (boiler in...

Thanks Andy - I was hoping it could be done - though was concerned that one of either the PIR or photocell would cease to work by combining outputs and effectivily having two switches triggering independently. Drawing the circuit with the two "switches" in parallel clarifies that it will...

Hi, I've searched the forum with little succes so wonder if there is actually a way to do the following: I have an existing external PIR & outside lantern, fed directly from the consumer unit in the garage. The PIR no longer works - (lens is broken) and I am intending to replace. I...