vivienz Posted November 14, 2019 Share Posted November 14, 2019 We had a brief power cut this evening with everything shutting down for about 5 minutes. Most things are fine but the MVHR won't come back on and appears to have dropped its link with the control pad. I've attached a photo of the messages on the pad. I have no idea how to re-establish this and the house is rather uncomfortable without it running. Can anyone help, please? Link to comment Share on other sites More sharing options...
Ed Davies Posted November 14, 2019 Share Posted November 14, 2019 Not being sarcastic: have you tried turning it off and on again? Maybe there was a glitch as the power came back on which borked one or other end which would be reset by turning it on with the power in a stable state. Link to comment Share on other sites More sharing options...
vivienz Posted November 14, 2019 Author Share Posted November 14, 2019 None taken, Ed, but yes I did try that both at the control pad and the power switch to the main unit itself. I will give it another try - it won't make it any worse. Link to comment Share on other sites More sharing options...
vivienz Posted November 14, 2019 Author Share Posted November 14, 2019 (edited) Okay, it did make it worse. The main unit is now giving out a high pitched alarm signal whistle. I've switched it off again. Update: and on again. Alarm gone but still not talking to the control pad. Edited November 14, 2019 by vivienz update Link to comment Share on other sites More sharing options...
MikeSharp01 Posted November 14, 2019 Share Posted November 14, 2019 Has it got / is there a flat backup battery somewhere and its lost its settings? Link to comment Share on other sites More sharing options...
vivienz Posted November 14, 2019 Author Share Posted November 14, 2019 (edited) I'm not aware of any battery in the main unit. The control pad is still on. Edited November 14, 2019 by vivienz Link to comment Share on other sites More sharing options...
MikeSharp01 Posted November 14, 2019 Share Posted November 14, 2019 Has the main unit got a reset button / switch hidden behind a tiny hole somewhere. Although looking at the message it implies that some communication blockage has occured there are no switches (network) anywhere in the system - is the panel wired direct to the main unit? Link to comment Share on other sites More sharing options...
vivienz Posted November 14, 2019 Author Share Posted November 14, 2019 Yes, the control pad is hardwired to the unit. Without taking off the internal panel covering the electronics of the main unit, I can't say whether there is a reset button. I don't want to mess with anything inside it as I have no idea what I would be doing. Link to comment Share on other sites More sharing options...
vivienz Posted November 14, 2019 Author Share Posted November 14, 2019 The control pad has a user and maintenance interface but I can'tdo anything with these as i have never been given the logins. Link to comment Share on other sites More sharing options...
MikeSharp01 Posted November 14, 2019 Share Posted November 14, 2019 Just now, vivienz said: Without taking off the internal panel covering the electronics of the main unit, I can't say whether there is a reset button. I don't want to mess with anything inside it as I have no idea what I would be doing. No Best leave it unless there is a clear reset button on the outside. Link to comment Share on other sites More sharing options...
MikeSharp01 Posted November 14, 2019 Share Posted November 14, 2019 Try leaving it off for a longer period, couple of minutes, just in case some residual voltage is lurking about in some capacitor in there. Link to comment Share on other sites More sharing options...
vivienz Posted November 14, 2019 Author Share Posted November 14, 2019 Okay, will go and switch off again and leave it for a while. Thanks, Mike. Link to comment Share on other sites More sharing options...
Ed Davies Posted November 14, 2019 Share Posted November 14, 2019 1 minute ago, MikeSharp01 said: Try leaving it off for a longer period, couple of minutes, just in case some residual voltage is lurking about in some capacitor in there. Good idea. Probably worth doing that at both ends together. Link to comment Share on other sites More sharing options...
vivienz Posted November 14, 2019 Author Share Posted November 14, 2019 Okay, I've switched it off at the RCD and that has cut the power to thr control pad as well. I will give it long enough for a small glass of red wine then try it all again. Thanks, chaps. Link to comment Share on other sites More sharing options...
JFDIY Posted November 14, 2019 Share Posted November 14, 2019 Think I'd turn it off for half an hour or more, if it faulted on the original 5 minute interlude it perhaps would benefit for longer 1 Link to comment Share on other sites More sharing options...
vivienz Posted November 14, 2019 Author Share Posted November 14, 2019 11 minutes ago, JFDIY said: Think I'd turn it off for half an hour or more, if it faulted on the original 5 minute interlude it perhaps would benefit for longer A slightly less small glass of wine, then. Link to comment Share on other sites More sharing options...
Pocster Posted November 14, 2019 Share Posted November 14, 2019 9 minutes ago, vivienz said: A slightly less small glass of wine, then. A big glass required! ? fixes everything!! Link to comment Share on other sites More sharing options...
Bitpipe Posted November 14, 2019 Share Posted November 14, 2019 52 minutes ago, Ed Davies said: Not being sarcastic: have you tried turning it off and on again? You are a highly paid IT consultant and I claim my £5. Either that or you've watched too much IT Crowd 1 Link to comment Share on other sites More sharing options...
vivienz Posted November 14, 2019 Author Share Posted November 14, 2019 8 minutes ago, pocster said: A big glass required! ? fixes everything!! Not with all that up and down into the loft! I've already had 1 broken ankle in the last couple of years and don't want that again! 1 Link to comment Share on other sites More sharing options...
vivienz Posted November 14, 2019 Author Share Posted November 14, 2019 I've switched back on but there's still no change with the control pad display and it's not talking to the main unit. I will call the manufacturer tomorrow and see if they can help. 1 Link to comment Share on other sites More sharing options...
PeterW Posted November 14, 2019 Share Posted November 14, 2019 Looks like the power trip has spiked the main board - was this weather related (power outage)..? Link to comment Share on other sites More sharing options...
Onoff Posted November 14, 2019 Share Posted November 14, 2019 Should you lot with ASHPs not be considering fitting SPDs (surge protection devices) from the off to protect all that delicate, expensive electronic gubbins? What's is going to cost, £70? Hager Guide to Surge Protection.pdf I've a couple of dead fax machines here that suggest I should! ? Link to comment Share on other sites More sharing options...
Pocster Posted November 14, 2019 Share Posted November 14, 2019 1 minute ago, Onoff said: Should you lot with ASHPs not be considering fitting SPDs (surge protection devices) from the off to protect all that delicate, expensive electronic gubbins? What's is going to cost, £70? Hager Guide to Surge Protection.pdf 2.29 MB · 0 downloads I've a couple of dead fax machines here that suggest I should! ? What’s a fax machine? 1 1 Link to comment Share on other sites More sharing options...
ProDave Posted November 14, 2019 Share Posted November 14, 2019 1 minute ago, Onoff said: Should you lot with ASHPs not be considering fitting SPDs (surge protection devices) from the off to protect all that delicate, expensive electronic gubbins? What's is going to cost, £70? Hager Guide to Surge Protection.pdf 2.29 MB · 0 downloads I've a couple of dead fax machines here that suggest I should! ? Not all mvhr units are over complicated with computers and communication protocols. Mine is basically a 4 speed fan, with volt free contacts to select the speed, and simple timer and relay logic for selecting boost speed. Link to comment Share on other sites More sharing options...
Simplysimon Posted November 14, 2019 Share Posted November 14, 2019 3 minutes ago, pocster said: What’s a fax machine? it was the successor to the clay tablet, don't you read history? 1 Link to comment Share on other sites More sharing options...
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