Cable missing in central heating wiring

[naylorpd]

I had a problem a couple of days ago with my boiler shutting down due to too high temperature difference between the input and output, which transpired to be because the boiler had been wrongly wired.

I have two zones in my heating system, so as I understand it there should be 5 wires between the controller and the boiler - L, N & E plus two switched live. But there was only a 4-core cable so the boiler had been wired in a slightly different way to accommodate this. Interesting to speculate whether the cable would have been fitted by the plumbing or electrical contractor in a new-build house! Anyway, it is what it is - but practically impossible to rectify as the two ends are on different floors and not directly one above the other.

The gas engineer who came to check it out rewired in a different way but acknowledged that it's still not optimal. He speculated that I may be able to do something with a wireless connection between the boiler and controller. Any ideas about how to do that, and what I would need to buy?

Thanks

 

[AJshep]

There is another product I've used a few times called Mains Switch - RF Switch for Wireless Control of HVAC pumps controlled by Boilers. - https://mainsswitch.co.uk/

 

[naylorpd]

On balance the wireless link is probably the neatest option. Moving the pump takes it from a cupboard to a usable store room so is marginally less suitable, though technically sound. But at least I have two viable solutions.

The system is already run through Hive. But moving that upstairs puts it one floor further from the router so anyway would not seem like a good idea, though it seems that doesn't work anyway - the issue is the power to the pump.
Thanks

 

[davesparks]

On balance the wireless link is probably the neatest option. Moving the pump takes it from a cupboard to a usable store room so is marginally less suitable, though technically sound. But at least I have two viable solutions.

The system is already run through Hive. But moving that upstairs puts it one floor further from the router so anyway would not seem like a good idea, though it seems that doesn't work anyway - the issue is the power to the pump.
Thanks

From a technical perspective moving tbe pump is tbe simplest option which leaves you with the least number of potential failures.