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Thread: Opentherm & Intergas

  1. #1

    Default Opentherm & Intergas

    Hi All,

    Trying to setup Evohome using the opentherm bridge, and my intergas exclusive.

    Pairing of the bridge goes fine. I get a single green flash from the bridge, and then the 3 red flashes, pause, 3 red flashes indicating no opentherm communication.


    Thanks

  2. #2
    Automated Home Guru
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    Sep 2018
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    Could it be the same issue as this, reset the boiler’s RF unit?

    https://www.automatedhome.co.uk/vbul...ll=1#post45611

  3. #3
    Automated Home Lurker
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    Sep 2020
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    I believe the purpose of the Intergas boiler’s RF unit is to enable the direct connection of Honeywell stand alone thermostats.

    The boiler’s Opentherm connection is hardwired via a two conductor cable to the Evohome opentherm bridge.

  4. #4
    Automated Home Legend
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    Jan 2015
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    NE UK
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    1,365

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    Quote Originally Posted by SteveFraser View Post
    I believe the purpose of the Intergas boiler’s RF unit is to enable the direct connection of Honeywell stand alone thermostats.

    The boiler’s Opentherm connection is hardwired via a two conductor cable to the Evohome opentherm bridge.
    Indeed it is. If you look ate the wiring diagram in your instruction manual it shows the connection point for the two wires from the Openthermbridge assuming you are using the Honeywell Bridge. There is no need, should not be any other connection. Perhaps your installer has wired in a thermostat if you had one before? That might conflict. If it is that then you may need to re-pair the bridge to the Panel. My Exclusive only has mains power and the OpenTherm Bridge connected to it. Works fine.

  5. #5

    Default

    It's looking like a dodgy OT Bridge. Waiting for the replacement to arrive.

    Update - Issue resolved with a replacement OTB Module.
    Last edited by StuartP; 19th May 2021 at 02:50 PM.

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