Defect: When selector placed at hot water / central heating the boiler is constantly running even though manual over-ride is selected off. It means the timer function cannot be used.
Actions Taken so far:
1) I have verified that the CH Diff PX microswitch working correctly.
2) I have checked Auto Bypass membrane intact.
3) I have reset the system.
4) I have unplugged the timer to PCB to no avail. - Still the same.
Any ideas gentlemen? I am thinking that it maybe the PCB or the divider valve. However I may have missed something fundamental.
Advice appreciated.
Flyingspanner
Actions Taken so far:
1) I have verified that the CH Diff PX microswitch working correctly.
2) I have checked Auto Bypass membrane intact.
3) I have reset the system.
4) I have unplugged the timer to PCB to no avail. - Still the same.
Any ideas gentlemen? I am thinking that it maybe the PCB or the divider valve. However I may have missed something fundamental.
Advice appreciated.
Flyingspanner