Jump to content

Urgent MVHR help needed


Recommended Posts

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?

20191114_172153.jpg

Link to comment
Share on other sites

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 by vivienz
update
Link to comment
Share on other sites

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

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

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

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?

  • Like 1
  • Haha 1
Link to comment
Share on other sites

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

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...