Hi all,
I have a Potterton Suprima 100 with the dreaded lock-out problem.
Basically, in ONLY locks out when you turn the thermostat on the boiler up past say half way It NEVER locks out when you keep the thermostat at say '3:00' or lower.
I have already replaced the temperature sensing Thermistor but it has not made any difference.
It has also been fitted with the updated Siemens 5107117 Control unit about 2 years ago - I have inspected the PCB inside & it is immaculate i.e. no sign of any dry joints.
I have not yet replaced the Overheat thermostat could it be this?.
Also my system is wired 'S' Plan & the pump is wired into the junction box & not directly to the boiler - but surely this wouldn't affect it locking out at a certain setting?
Any help or ideas appreciated!.
Thanks in advance.
I have a Potterton Suprima 100 with the dreaded lock-out problem.
Basically, in ONLY locks out when you turn the thermostat on the boiler up past say half way It NEVER locks out when you keep the thermostat at say '3:00' or lower.
I have already replaced the temperature sensing Thermistor but it has not made any difference.
It has also been fitted with the updated Siemens 5107117 Control unit about 2 years ago - I have inspected the PCB inside & it is immaculate i.e. no sign of any dry joints.
I have not yet replaced the Overheat thermostat could it be this?.
Also my system is wired 'S' Plan & the pump is wired into the junction box & not directly to the boiler - but surely this wouldn't affect it locking out at a certain setting?
Any help or ideas appreciated!.
Thanks in advance.