Search results

  1. V

    Heating only works when the water is switched on

    Hi Guys, I have a Honeywell Timer ST6400c, Honeywell thermostat T6360B and a Potterton profile 80e heater. Poblem is the timer and boiler ony fire up for hot water. Cannot get the boiler to fire up for heating only. Boiler fires first time for water with or witout timer but nothing for heating...
Back
Top