Can anyone advise what could be the cause and how to overcome an actuator intermittently not responding when boiler is calling for heat.
Possibly slightly loose fitting to valve, as actuator re-activates with hand pressure movement when boiler is calling for heat. This is an intermittent fault and is more likely to happen when hot, suggesting an expansion influence.
Possibly slightly loose fitting to valve, as actuator re-activates with hand pressure movement when boiler is calling for heat. This is an intermittent fault and is more likely to happen when hot, suggesting an expansion influence.