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  1. G

    Nest (s) wiring sanity check - multi zone replacement

    Well what helps is the pump is in new colours, which along with the valve wire colours which are original, helps very easily highlight the lives and neutrals in the system. Ive ordered a new wiring centre just to make the entire setup tidy and sleeve the earths, im just missing the link of why...
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    Nest (s) wiring sanity check - multi zone replacement

    I’m not no, I’m hoping the routing per the pic makes more sense of that. In short - the existing room thermostats have a red and black cable, the black to go to the zone valves, the red seem to go up to the programmer - but changing colour to black as they do. The other red cables that go...
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    Nest (s) wiring sanity check - multi zone replacement

    Ok I’ve traced it visually and am left with the following: Blacks to the programmer are all Neutrals. The 3 reds that go to the programmer, are the 3 valve “live on boiler and/or pump” but the wiring here confuses me: There are 4 terminals all bridged/ linked. 1: has just the “live termial...
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    Nest (s) wiring sanity check - multi zone replacement

    Ok after a lot of reading I’m certainly considering redoing the entire wiring centre to make sense of what’s what and harmonise the colours. Can someone confirm if this looks correct bar the missing link from the pump to the boiler? The only part I’m stuck on is how the CH valve says it...
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    Nest (s) wiring sanity check - multi zone replacement

    If I understand you correctly, are you saying that if this was a freshly installed system, the only terminals populated in the 3rd gen heatlink (excl L and N), are ports 3 and 6?
  6. G

    Nest (s) wiring sanity check - multi zone replacement

    Understood but based on the above tracing does that not help determine what the cables in the “off” position are for?
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    Nest (s) wiring sanity check - multi zone replacement

    Ok wiring centre is spaghetti junction with some connections hard to see, so I’ve traced one valve visually as best I can (the closest lower value seen in the picture) which is the downstairs zone. Valve has 4 wires Blue, brown, orange, orange grey. These feed to a connection block that maps...
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    Nest (s) wiring sanity check - multi zone replacement

    So should I trace where the wires are going to? Gotta be doing something to bother wiring surely… Current programmer works fine so somethings strange for sure
  9. G

    Nest (s) wiring sanity check - multi zone replacement

    No problem, picture uploaded to original post thanks :) All connectors are used on the original programmer
  10. G

    Nest (s) wiring sanity check - multi zone replacement

    Hi all, Looking to replace a 2x zone CH programmer and HW controller with 2x nest. Nest 1- (3rd gen) will control downstairs heating and HW Nest 2 - (nest “e” thermostat) will control upstairs heating. Current programmer has seemingly simple wire structure, a series of neutral and live each...
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    Large cracks in single skin garage wall, how bad?

    why waste my own money getting a quote to fix something the home owners should, only to find out they’re not willing to take the discount off the price for the repairs.. I just want to get some rough ball parks so I can open the conversation with some level of accuracy. No idea if this could be...
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    Large cracks in single skin garage wall, how bad?

    Hi guys, Just back from looking at a house I’m interested in buying, but the garage wall had a very precarious large gaps running diagonally down it. It looks based on the mortar that it might have been covered up before but reopened again! What generally causes this? I thought foundational...
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    Landing edging? Where to buy?

    Hi all, Basically I’m redoing my landing, and it’s never had any kind of landing edging before where the floor ends and stairs drop in front of it (ie where a balustrade would stop you falling down). Obviously want to change it and have the edge finished properly. Googling around and all I...
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    Ecomax 824/2E wrong temp - luke warm water

    Oh! Different guy then, googling ex- Vaillant engineer oxford doesn’t give me any obvious results. Would you mind pm’ing me his company? Unless you’re willing to disclose said £20 part to save me another few hundred. Thanks!
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    Ecomax 824/2E wrong temp - luke warm water

    If said engineers first name starts with a “T” it’s worth noting I tried this back before I had the parts replaced (on the phone booking him he suggested it sounded like the diverter valve FYI). He was initially booked to come round round but couldn’t attend the in the end due to being unwell on...
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    Ecomax 824/2E wrong temp - luke warm water

    There are no fault codes and status codes show normal operation that’s the issue, the boiler believes it’s doing what it should be but just can’t seem to reach target temp anymore. Who’s said engineer?
  17. G

    Ecomax 824/2E wrong temp - luke warm water

    In terms of this video, should I have heating and hot water on to record it or just hot water only?
  18. G

    Ecomax 824/2E wrong temp - luke warm water

    Update, replaced the heat exchanger. No difference, boiler just reached temp then declined as normal then wasn’t getting above 49oc despite hot being set to 60oc
  19. G

    Ecomax 824/2E wrong temp - luke warm water

    Hmm interesting, hard for me to say without knowing what it should sound like. Would it help if I took a video?
  20. G

    Ecomax 824/2E wrong temp - luke warm water

    Nope all very clear in fairness. The pressure sensor was mucky but that was the only sign of dirt in the system. Even draining down from the rads it was pretty clear ...
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