I worked on one the other day with hot water that fluctuates. It only fluctuates on the outlet on the middle floor. If the tap is throttled down 1/3 it works fine???
Boilermate 2000
- Thread starter jamscunny
- Start date
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Usually due to a failing HW Thermistor but could be scale in plate HE, or the store is not at full temperature - the source boiler's thermostat should be set to Max 
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