hi out there,
i have a Bosch Worcester greenstar combi boiler I have a couple of problems with:
When I run the hot tap in the bathroom the boiler works fine for 3 -4 mins then trips out, restart and repeat. It only does this with this ONE hot tap in the house.
Recently when having a shower the hot water has become very twitchy ie it's either scalding hot or freezing cold, all within about 5 mm rotation of the shower mixer.
both faults are in the bathroom which is at the same level as the boiler. Don't know if that makes a difference but thought it might be relevant.
any thoughts anyone? (preferably folk with some plumbing heating knowledge!)