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Worcester boiler CH temp issue?

  • 19-06-2023 10:28pm
    #1
    Type 901
    Registered Users, Registered Users 2 Posts: 61 ✭✭


    Experiencing an issue with a Worcester Greenstar 21i boiler if anyone could help with!

    I have previously installed a Tado smart controls system and is all working correctly with my 3 zone s plan system (CH x2, & HW). Boiler fires from the LR (signal) when the Tado calls for heat but have noticed the boiler acting oddly now in the warmer weather where there is no calls for heat.

    It looks like the boiler is trying to maintain the CH flow temperature by intermittently firing throughout the day - is this normal? Flow temp is currently set at 60c on the boiler. Have looked at the wiring in the boiler and all looks correct. The 230v supply from the fused spur is connected to L/N IN, then L/N OUT to the wiring centre, and the signal live from the zone values is connected to LR CH. This all looks correct from the Worcester wiring diagrams.

    Is there potentially a setting in the boiler menus that needs to be changed? Only thing I can think of..

    Post edited by Type 901 on


Comments

  • #2
    Lenar3556
    Registered Users, Registered Users 2 Posts: 1,712 ✭✭✭Lenar3556


    Is sounds like the ‘call for heat’ signal is continuously closed.

    if you remove one of the connections from either the LS or LR terminals does it stop?



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