Is this flowmeter repaired eg by cleaning or is it better to replace it? The cost in the service is about 50 PLN and I have probably 2 because I have 2300W versions. I am noticing that I am poorly drawn from the glass as if it could not, the panarello pair is not a revelation as if the weak strength was and is heard as if pumping-tapping. It is normal whether I am waiting for another exchange-repairing something? The boilers are supposedly new.