Evohome 2nd hce80 not triggering boiler relay

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts
  • mdf4068
    Automated Home Jr Member
    • Feb 2017
    • 12

    Evohome 2nd hce80 not triggering boiler relay

    Hi I have a evohome new ufh system with 2 manifolds and two hce80’s the boiler is at one end of the house the main controller and 1st hce80 are in the middle and the 2nd hce80 is at the opposite end of house to boiler,

    The first ufh80 works great, the trouble is with the second one, the controller triggers the zones correctly and actuators work and pump turns on but it doesn’t trigger the boiler relay on any of the zones connected to it.

    My question is why? Is the hce80 talking direct to the boiler relay and the distance is too great or is boiler relay triggered from central controller which is what I think is happening. If the latter any ideas why boiler is not triggered from second hce80?
  • kevinsmart
    Automated Home Ninja
    • Sep 2018
    • 257

    #2
    The central controller is responsible for activating the boiler relay.

    What does your System Summary screen (long press Settings) show when the second HCE80 zones are calling for heat?

    Comment

    • mdf4068
      Automated Home Jr Member
      • Feb 2017
      • 12

      #3
      9B8E8C7A-23B1-4E06-943C-5E7F34C997DB.jpgIt just says underfloor heating the same as the rooms not calling for heat, when I look at one of the rooms on the other hce80 is shows the same

      9B8E8C7A-23B1-4E06-943C-5E7F34C997DB.jpg
      Last edited by mdf4068; 11 September 2021, 11:51 AM.

      Comment

      • kevinsmart
        Automated Home Ninja
        • Sep 2018
        • 257

        #4
        Looks like you don’t have a boiler relay configured?

        You should see an Appliance entry for the BDR91 or OpenTherm boiler control.

        How is your system wired?

        Comment

        • mdf4068
          Automated Home Jr Member
          • Feb 2017
          • 12

          #5
          Hi yes it has a bdr91 configured, but it’s on the pervious page as we have 8 zones, the devices that won’t trigger the boiler are on the page shown, what’s interesting is none of the zones in the summary have any info to the right of the underfloor heating for both ones that trigger the boiler or ones that don’t.

          Comment

          • kevinsmart
            Automated Home Ninja
            • Sep 2018
            • 257

            #6
            Originally posted by mdf4068 View Post
            Hi yes it has a bdr91 configured, but it’s on the pervious page as we have 8 zones, the devices that won’t trigger the boiler are on the page shown, what’s interesting is none of the zones in the summary have any info to the right of the underfloor heating for both ones that trigger the boiler or ones that don’t.
            What firmware version are you running? Press SETTINGS. Keep the DEVICE SETTINGS button pressed until SYSTEM INFORMATION is displayed. Latest is 02.00.19.33

            Comment

            • mdf4068
              Automated Home Jr Member
              • Feb 2017
              • 12

              #7
              Originally posted by kevinsmart View Post
              What firmware version are you running? Press SETTINGS. Keep the DEVICE SETTINGS button pressed until SYSTEM INFORMATION is displayed. Latest is 02.00.19.33
              Hi it is application 01.00.07.01. WiFi 02.00.17.00

              How do I update it

              Comment

              • kevinsmart
                Automated Home Ninja
                • Sep 2018
                • 257

                #8
                Contact customer support: consumersupportuk@resideo.com
                Provide this info:

                MAC ID and CRC code of the Evohome.

                The MAC address and CRC code of the evohome controller can be found in the following ways:

                On the label when removing the plastic front frame of the evohome controller
                On the REGISTER ONLINE screen once the thermostat is connected to your wireless network

                Comment

                • mdf4068
                  Automated Home Jr Member
                  • Feb 2017
                  • 12

                  #9
                  Originally posted by kevinsmart View Post
                  Contact customer support: consumersupportuk@resideo.com
                  Provide this info:

                  MAC ID and CRC code of the Evohome.

                  The MAC address and CRC code of the evohome controller can be found in the following ways:

                  On the label when removing the plastic front frame of the evohome controller
                  On the REGISTER ONLINE screen once the thermostat is connected to your wireless network
                  Thanks, I have emailed support today to push out the new firmware, hopefully that might solve it, I will post when its updated and re tested

                  Comment

                  • kevinsmart
                    Automated Home Ninja
                    • Sep 2018
                    • 257

                    #10
                    It might not solve it but it will at least allow us to debug more easily, by seeing the zone demand percentages

                    Comment

                    • bruce_miranda
                      Automated Home Legend
                      • Jul 2014
                      • 2307

                      #11
                      There is a subtle unpublished difference between the two UFH controllers. One uses it's internal antenna and one requires an external antenna, and that was all that people thought were the differences. However from sniffing the RF data we now know that one controller does not publish the individual zone demands, but only a single consolidated Heat Demand for the entire UFH controller. It's a pity really. This was uncovered in another thread.
                      I'll edit this post if/when I find it.
                      Found it : https://www.wordpress-1219309-438749...-radio-signals
                      Last edited by bruce_miranda; 14 September 2021, 09:44 AM.

                      Comment

                      • mdf4068
                        Automated Home Jr Member
                        • Feb 2017
                        • 12

                        #12
                        Ok just upgraded the Firmware on the controller to latest version and now the second HCE80 now triggers the BDR91 as it should do and the system status screen shows 100% demand for zone and boiler relay so problem now solved.

                        Thanks everyone for your help and advice.

                        Comment

                        • bruce_miranda
                          Automated Home Legend
                          • Jul 2014
                          • 2307

                          #13
                          Does the HCE80 now show the individual zone's Heat Demand in the System Summary page? Or just a single Heat Demand for the entire UFH controller?

                          Comment

                          • kevinsmart
                            Automated Home Ninja
                            • Sep 2018
                            • 257

                            #14
                            Originally posted by bruce_miranda View Post
                            Does the HCE80 now show the individual zone's Heat Demand in the System Summary page? Or just a single Heat Demand for the entire UFH controller?
                            I’ve got HCE80s with external antennas and see individual zone demands on the controllers

                            Comment

                            • bruce_miranda
                              Automated Home Legend
                              • Jul 2014
                              • 2307

                              #15
                              Kevin, any pictures of your UFH zones on the System Summary page ?

                              Comment

                              Working...
                              X