Well, if I close the two thermostat wires, that's electrically identical to putting a bridge on the pins they're connected to in the boiler?
Have I blown my boiler electronics?
- Thread starter Dan8322
- Start date
Well, if I close the two thermostat wires, that's electrically identical to putting a bridge on the pins they're connected to in the boiler?
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Well - it seems I need to do something in the short term, so I've opened the front to take a look. Seems easy enough.
I can see the 240V leads to the thermostat, and the other two are indeed on the 24V header. I guess that's that then, if the Hive did put 240V down it.
I can't see any scorching, so the cables seem intact as you'd expect. I could put a bridge across, but it'd be the same as when I shorted them at the thermostat.
I guess I could put a bridge wire across the 240V RT header and switch it to use that - IF thats how it works, and if it's not already fried. I can't seem to see how to connect it in the manual.
I can see the 240V leads to the thermostat, and the other two are indeed on the 24V header. I guess that's that then, if the Hive did put 240V down it.
I can't see any scorching, so the cables seem intact as you'd expect. I could put a bridge across, but it'd be the same as when I shorted them at the thermostat.
I guess I could put a bridge wire across the 240V RT header and switch it to use that - IF thats how it works, and if it's not already fried. I can't seem to see how to connect it in the manual.
Link Live to the 240V RT connector (with the power off of course) then check briefly that the boiler will fire.
If that works ok you just need to remove the link and take a single wire from Heating ON to the RT connector to get the thermostat working.
If that works ok you just need to remove the link and take a single wire from Heating ON to the RT connector to get the thermostat working.
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It's not the same as the boiler generates its own 24v for these terminals.
They would have been joined together by the Danfoss previously. That was how it worked, it is just switch. Introducing the 230v from inside the Hive was the problem.
I hope it works, but if it does you will have been very lucky.
It did. That'll keep us going until Friday. Thanks for helping me out!
I'm debating whether to leave it as-is to avoid any more carnage, and have the board replaced, before I go and consider anything else. I'm also wary of anything else that might have been damaged - for example, I'm now suspicious that the radiators are too hot for the temp I set at the boiler.
On the plus side you've saved all that money on having the Hive fitted by a so called professional
Well, I learnt a lot. Unfortunately I don't have the time I used to, to learn as much as I evidently need
I now predict a trend of homeowners all around the world rising up in their own misguided attempts at attempting to conduct home improvements.
They might badge it "Do It Themselves", and create shops and forums in tribute.
I now predict a trend of homeowners all around the world rising up in their own misguided attempts at attempting to conduct home improvements.
They might badge it "Do It Themselves", and create shops and forums in tribute.
On the plus side you've saved all that money on having the Hive fitted by a so called professional
You gotta laugh ain'tya @Razor900 .
Come on guys give Dan8322 a break. He knows what he's done. No need to 'keep rubbing salt in his wounds'.
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I'm sure this isn't the case here but, I paid a Nest "Pro" to come and install my two Nest stats but he was here about 5 minutes before deciding he didn't know what to do and claiming my system wasn't compatible. I looked into it myself and managed it self-install without any issues. I now consider myself to have a good/working understanding of central heating electronics which I'd never have got if I hadn't been forced to install my own.
To be fair the OP has put his hands up and hasn't given a load of attitude despite the ribbing he's had.
Let's hope he's just blown a fuse or something and the mistake won't cost him hundreds of pounds to rectify. And no that wasn't sarcastic.
Good luck, when you get it sorted it would be great if you can update the thread
Let's hope he's just blown a fuse or something and the mistake won't cost him hundreds of pounds to rectify. And no that wasn't sarcastic.
Good luck, when you get it sorted it would be great if you can update the thread
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