Hi mate, I had a similar issue with my boiler, the upstair batroom never got proper hot water, also it tended to fluctuate between warm, cold then semi hot sometimes.
Guy from Ideal came out and said the water pressure was too high on boiler, he adjusted and after that ran nice and hot anywhere in house untill boiler recently packed up lol.
quote="Heat4input";p="1953170"]try callibrating your mixer[/quote]
tried to alter control knob limits,ie it wont turn anymore even without the limiter in place.
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