M
Mikko
Worcester Bosche Greenstar R30 HE Combi. No hot water/Heating works ok. No error codes displayed.
With heating off. Flow switch rises on demand burner does not fire. Diverter motor head piston in. Diverter valve moves freely. Turn tap off and the flow switch returns to rest. The burner runs for several seconds. The display is at 70 degrees and then the boiler switches off. Open a tap. The flow switch rises. No burner. Manually make the micro switch and the burner fires and gives plenty of hot water. Replaced micro switch. Still no success. Replaced pcb. Still no success. Head scratching now ???? Anyone had this fault.
With heating off. Flow switch rises on demand burner does not fire. Diverter motor head piston in. Diverter valve moves freely. Turn tap off and the flow switch returns to rest. The burner runs for several seconds. The display is at 70 degrees and then the boiler switches off. Open a tap. The flow switch rises. No burner. Manually make the micro switch and the burner fires and gives plenty of hot water. Replaced micro switch. Still no success. Replaced pcb. Still no success. Head scratching now ???? Anyone had this fault.