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  1. M

    Replacing Hilight Hotplate on Neff Hob - wiring

    Hi, the hotplate on my NEFF T6872N0 hob has gone and I was advised by neff the replacement part is a Bosch 356337. It arrived today but the connectors/terminals are different to the existing one so it doesn't seem as straightforward as just taking the wires off and putting them on the new...
  2. M

    CH/boiler - impact of being turned on & off by room stat

    Does anybody know what impact turning on and off the boiler numerous times each day will have on a boiler's life-span? Assume it must be minimal as that is what the room stat is supposed to do?
  3. M

    TRV's and Room Stat

    Just wondering about location of new wireless room stat. I have 2 x rads with TRV's in living room, it also has a gas fire but it's not often used. The Hall is usually cooler and also has a rad with a TRV. I know room stat should not go in same room as TRV but ideal location is the...
  4. M

    Wireless CMT 927 with 9400C timer: Y Plan wiring

    Hi, I have ordered a CMT927 but want to make sure I'm 100% correct with wiring for my Y plan system. I intend to use the existing 9400C timer for HW only, so I remove CH ON on term 4 at either end I wire L(1) and N(2) up to Receiver, connect A to terminal 4 and B to terminal 5 (white to...
  5. M

    Scalding Hot Water - 3 port Mid pos Valve suspect?

    Hi, HW is scalding hot (always has been), just wondering how to confirm 100% if Mid Pos Valve is faulty? I have tried turning cyl stat down to 50 and makes no difference, when I turn it up and down past the click I can here the valve opening and flow pipe to cyl gets hotter. I have...
  6. M

    CH only comes on with HW - it has always been like this!

    Wallstar Oil Boiler located in kitchen Honeywell V4073A 3 port mid pos Valve Grundfos pump under 3 port valve. Honeywell ST6400C programmer Honeywell L641A cylinder stat No room stat I've never been able to turn on CH without HW, boiler only fires up when HW is turned on at same...
  7. M

    Draining down CH - some downstairs rads not emptying?

    OK, decided to drain CH system to clean it with Fernox restorer and add Fernox protector after clean because I don't believe it's ever been done in the 6 years I've been here. I have a standard Open Vented with F&E tank and 16 rads, two rads downstairs have drain-cocks (on rads I had installed...
  8. M

    CH only works with HW on at same time

    Wallstar Oil Boiler located in kitchen Honeywell V4073A 3 port mid pos Valve Grundfos pump under 3 port valve. Honeywell ST6400C programmer Honeywell L641A cylinder stat No room stat! 1) OK this system was in before we moved in 6 years ago, no change to anything. We have never been...
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