• Looking for a smarter way to manage your heating this winter? We’ve been testing the new Aqara Radiator Thermostat W600 to see how quiet, accurate and easy it is to use around the home. Click here read our review.

Search results

  1. R

    Pump over-run is working, but ...

    ...the zone valves are shut so the hot water in the heat exchanger is not circulating as it ought to. Once heating demand is satisfied the 2-port spring return motorized valves (MVs) close, hence no circulation. The wiring diagram in the boiler manual doesn't make any allowance for this, so...
Back
Top