Recent content by mkvrnn

Is there really a danger of blowing the speach unit at the door? It seems that my handset is an Urmet 1130 which uses a 12v AC buzzer. Can I use any handset which has an AC buzzer, such as a Terraneo 600?

Thanks for the quick reply. I hadn't realised that Urmet handsets are still available, but mine is so old that modern versions might not be compatible. I'll call them tomorrow. But if systems are broadly compatible (similar voltage?) then I may as well buy a £5 jobbie off eBay.

I have an Urmet entry phone system on a flat of mine which is probably around 25 years old. Unfortunately my previous tenant has kindly smashed it, although the rest of the system for the other flats in the block is intact. Can anybody tell me whether I can replace the phone in the flat with...

Did you manage to sort this out? I have an identical Urmet system on a flat of mine and my previous tenant has kindly smashed it. Can anybody tell me whether I can replace the phone in the flat with a more modern version from another manufacturer and whether it is likely to be compatible with...

I've now replaced the motor, a nice easy job, and the problem is fixed. So much for the Biasi Technical Dept who diagnosed it as needing a diverter valve repair kit (which doesn't contain a new motor)! Thanks again Tony.

Hi Tony. Oh dear! I ordered a new motor earlier today! I thought from your previous post that the test you suggested (removing the motor to see whether the actuator moved to the DHW position) would indicate whether or not the motor was faulty. Did I misunderstand? Mike

Hi Tony I tried unclipping the motor and sure enough, the valve moved to the DHW position giving me hot water from the taps. Does that mean that the motor is siezed and needs replacing? Many thanks. Mike

Thanks for your replies guys; I really do appreciate your help and advice. I've successfully replaced the diaphragm and microswitch on a Vailant in the past but I haven't even taken the cover off the Biasi yet so please forgive my ignorance. I'll locate the diverter valve tomorrow and take...

Yes, that's exactly what is happening. With the boiler cold, if I turn on a tap the boiler fires and the CH flow pipe gets hot. So the next question is which part of the diverter valve should be replaced? Is it likely to be the actuator motor or the diaphragm?

Thanks for the 2 replies so far. If the diverter valve is faulty, wouldn't that mean that the boiler wouldn't fire up when the hot water tap is turned on? The boiler definitely lights in the normal way when I turn on the tap, which made me think that the diverter valve must be ok. Am I wrong...

I have a Biasi Riva Compact M90E.24S combination boiler. The central heating works fine but since last week only very cold water comes out of the taps. The strange thing is that when I turn on the DHW taps the bolier does fire up, but only cold water comes out of the taps and the hot water...