Results 1 to 6 of 6

Thread: Intermittent evohome "COMMS FAULT <ZONE> ACTUATOR"

  1. #1
    Automated Home Guru
    Join Date
    May 2017
    Posts
    126

    Default Intermittent evohome "COMMS FAULT <ZONE> ACTUATOR"

    We've started seeing this about once a day always for the same room, which is furthest away from the control unit.

    Does it just imply that room is just a little too far away? Or could it be a new issue given we haven't had this until recently? When would this error occur... Only when it is trying to set the actuator, or the moment it can't reach it? I ask as it's a room we set very cold.

  2. #2
    Automated Home Lurker
    Join Date
    Sep 2017
    Posts
    9

    Default

    Quote Originally Posted by MrBoy View Post
    We've started seeing this about once a day always for the same room, which is furthest away from the control unit.

    Does it just imply that room is just a little too far away? Or could it be a new issue given we haven't had this until recently? When would this error occur... Only when it is trying to set the actuator, or the moment it can't reach it? I ask as it's a room we set very cold.
    I am getting the same it complains about hall actuator which is very close to the controller. The hall has Its own separate thermostat and BDR91. The BDR91 is correctly installed ie spaced correctly and like the other two BDR within 4 foot of the controller.

  3. #3
    Automated Home Legend
    Join Date
    Sep 2014
    Location
    Scotland
    Posts
    1,841

    Default

    Quote Originally Posted by davewf View Post
    I am getting the same it complains about hall actuator which is very close to the controller. The hall has Its own separate thermostat and BDR91. The BDR91 is correctly installed ie spaced correctly and like the other two BDR within 4 foot of the controller.
    Hall actuator ? It's own BDR91 ?

    Do you have a zone valve controlling your hall radiator or UFH ?

  4. #4
    Automated Home Lurker
    Join Date
    Sep 2017
    Posts
    9

    Default

    Quote Originally Posted by DBMandrake View Post
    Hall actuator ? It's own BDR91 ?

    Do you have a zone valve controlling your hall radiator or UFH ?

    The hall radiator has no thermostatic valve or a HR92, essentially it's the bypass radiator for the system, in theory I don't need it as have bypass.

    That the two bathrooms and spare bedroom effectively are parisitic to the other rooms in the house which have HR92. I have to have a BDR91 in addition. Yes it totally does not make sense to me as you can attach two zones to one BDR91 but I was strongly advised to go this way. The Heat BDR and Hall BDR are just wired in parallel to the CH valve on an S system.

    The thermostat in the hall at the other end of the hall away from the radiator as using the inbuilt one in the controller caused the hall to always run cold.

    The system works very well apart from the odd loss of comms, but I put that down to the wireless design and technology being 10 years out of date.

  5. #5
    Automated Home Guru
    Join Date
    May 2017
    Posts
    126

    Default

    This doesn't sound the same problem in my original post

    I suppose I could try moving the controller temporarily and see if that resolves it.

  6. #6
    Automated Home Lurker
    Join Date
    Jan 2019
    Posts
    4

    Default

    I had similar problems and noticed that when I do an RF check on one of my radiator valve zones I found that that actuator link had dropped, hence the com fault. I then rebound the HR92 as an actuator within the zone and quickly did an RF check and I could see the signal go from excellent to no signal whilst the HR92 was syncing. very strange semed as if the link simply dropped. Did anyone see something similar?

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •