Various ways to identify a faulty motorised valve
5:07
How to renew a motorised valve motor or head. No draining down.
4:40
Central Heating Repair - Motorised Control Valve Fix
9:08
Motorised Valve Fault Finding
4:18
How to change a 3 port motorised valve on an open vented system
4:29
Actuator 24 Volts Check Operation
17:47
How to test 3 port system wiring for issues. Reference Sheet at End of vid
11:27
2 Port Central Heating Zone Valve CUT IN HALF Pt.2
7:42