Hi there. Newbie here I'm afraid.
I have a problem with my Boilermate 2000 system which also comprises a Suprima 50 wall mounted boiler. Very loud banging noises come from the boiler after a short while running. This is just a recent development and is most alarming when it happens. Boiler shuts down and after short while resets and the cycle continues.
I suspected the Grunfos HW pump at first and was suspicious of the fact that the measured ac voltage at the pump (and the PCB header connector) was only reading 130 - 150 v.ac. however if the header was removed when the HW circuit was energised the voltage at the pcb, (with the connector unplugged) read 240v.
Repeating this test at various times I noticed the voltage varies quite a lot, sometimes negligible but usually very low.
I was advised to replace the pump head but having now just replaced the pump head I discover that the problem has not been solved and the voltages are still as varied as before.
Does anyone know if this a normal situation regarding the pump voltage in a live situation.
Is my problem back at the boiler itself, I have reduced the thermostat to a mid-setting but the stiuation remains even with the lowest setting selected.
I have a problem with my Boilermate 2000 system which also comprises a Suprima 50 wall mounted boiler. Very loud banging noises come from the boiler after a short while running. This is just a recent development and is most alarming when it happens. Boiler shuts down and after short while resets and the cycle continues.
I suspected the Grunfos HW pump at first and was suspicious of the fact that the measured ac voltage at the pump (and the PCB header connector) was only reading 130 - 150 v.ac. however if the header was removed when the HW circuit was energised the voltage at the pcb, (with the connector unplugged) read 240v.
Repeating this test at various times I noticed the voltage varies quite a lot, sometimes negligible but usually very low.
I was advised to replace the pump head but having now just replaced the pump head I discover that the problem has not been solved and the voltages are still as varied as before.
Does anyone know if this a normal situation regarding the pump voltage in a live situation.
Is my problem back at the boiler itself, I have reduced the thermostat to a mid-setting but the stiuation remains even with the lowest setting selected.