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Hi,
I have a Potterton Suprima 60L that is heating the hot water cylinder to a very high temperature, even with hot water on the external timer set to the off position (no red LED on timer to indicate it is on and CH is also off). The status LED on the boiler seems to indicate the boiler is functioning normally as it flashes green then stays continuously green until it receives a call to fire up again when the temperature falls a little. I am wondering if the cylinder thermostat is faulty but then again surely this couldn't override the timer control, could it?
Any suggestions for check, tests or further info?
I have a Potterton Suprima 60L that is heating the hot water cylinder to a very high temperature, even with hot water on the external timer set to the off position (no red LED on timer to indicate it is on and CH is also off). The status LED on the boiler seems to indicate the boiler is functioning normally as it flashes green then stays continuously green until it receives a call to fire up again when the temperature falls a little. I am wondering if the cylinder thermostat is faulty but then again surely this couldn't override the timer control, could it?
Any suggestions for check, tests or further info?