my boiler fires when hot water is called for but not the central heating.
the programmer is on and calling for heating
the thermostat is calling for heat
the pump does not go when heating is called.
the mid position actuator does not move from hot water.
I have manually moved the actuator to the mid position (both water and heating) and the radiators get warm.
Any ideas which bit is at fault or a way or how I can find out?
Thanks,
Jules
the programmer is on and calling for heating
the thermostat is calling for heat
the pump does not go when heating is called.
the mid position actuator does not move from hot water.
I have manually moved the actuator to the mid position (both water and heating) and the radiators get warm.
Any ideas which bit is at fault or a way or how I can find out?
Thanks,
Jules