Hive installation broke my PCB on boiler

ericmark · 2026-01-17T18:42:58+0000

denso13 said:
That's distance to the room stat, not separation distance.

I did read and re-read, it does not really make sense, I know with my boiler the hub is within 2 meters of the boiler, but the thermostats in one case is two floors up, diagonally opposed to the boiler, and I have a booster socket adaptor as too far from the hub to connect with zigbee. Not measured the distance but very likely well over 30 meters, and common sense says it really does not matter how far the thermostat is from the boiler.

However, it likely does matter how far away the 24 VDC is from the 230 VAC.

endecotp · 2026-01-17T19:36:54+0000

opps said:
I don't disagree that they guy was not competent but I, perhaps mistakenly, thought that Gas Safe was only required for the gas side (including both the exhaust and condensate pipe). The Hive room stat will either work or not- I, as a lay person, cannot see how it makes the boiler dangerous. I am happy to be corrected by the plumbers here whom I respect.

I think the issue is that now the boiler PCB has been fried it needs to be replaced, and he may need to be gas-safe to do that even if the original thermostat connection didn’t need it. On at least some boilers, after replacing the PCB you have to do some gas flow rate (????) adjustments, followed by flue gas measurements. Or something like that.

CountryFan · 2026-01-17T21:47:12+0000

endecotp said:
On at least some boilers, after replacing the PCB you have to do some gas flow rate (????) adjustments, followed by flue gas measurements. Or something like that.

Aka 26.9 checks/fags. No sign of the op @NiallM.

Madrab · 2026-01-17T21:55:16+0000

Anyone replacing a PCB on a gas appliance should be gas safe registered as it will need to be tested and adjusted to ensure it's firing properly.

The Easi Heat Plus C's external case is decorative, the heat engine (Burner/hex/fan/etc) is all enclosed within a separate internal combustion cover. So accessing the electrics doesn't compromise the combustion space, so I wouldn't think the person would need to be GSR'd.

Harry Bloomfield · 2026-01-17T22:04:27+0000

ericmark said:
I have a feeling 30 meters is incorrect, it should read 300 mm, which is around 12 inches. But that is because I am an electrician and am aware of normal separation required.

I read that, as a maximum length for the cable, from the thermostat, but that the two cables must be separated.

ericmark · 2026-01-18T13:15:51+0000

Harry Bloomfield said:
I read that, as a maximum length for the cable, from the thermostat, but that the two cables must be separated.

I can see how it could be read that way, but using your own electrical knowledge what reason would there be to limit the length of a DC cable, can see a problem with AC specially if in kHz range like with down lights, but seems no reason to limit length of a DC cable.

Not that this helps, a new circuit board fitted by gas safe guy is required, and one would hope that guy would also wire it up correctly while he is at it.

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Hive installation broke my PCB on boiler

ericmark

endecotp

CountryFan

Madrab

Harry Bloomfield

ericmark

DIYnot Local

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