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Vaillant ecotec 618 s30 error
- Thread starter frozen123
- Start date
That should give more flow through the rads, as a temporary measure turn the setpoint temperature on the thermostat strapped to the cylinder to 70C, set or check that boiler flow temp is set to 60 to 65C turn up the roomstat to ensure the boiler fires up when both CH & HW selected and check d40 d41 after 15 minutes of constant running, you will have to get that 3 way valve seen to so that you can run on CH only.
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- 18 Nov 2023
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It hasn't made any difference to the ch, rads are still cold exc that one closest to cylinder which feels a little warmish. ive ordered a new 3 port switch for tomorrow. Will see if it works. Thank you for your help, it's much appreciated
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