Boiler was in St Gabrials Av, Cricklewood London NW2. . According to the manufacture the Error code F10 is a faulty return temperature sensor. Well I Never believe the obevious..I never believe what boiler says..Not even I put it through a lie detector test. All boilers are sometimes laying. So how am I gonna check fotr my self? okey I swop the alledgly faulty return tem sensor with the Flow tem sensor ( they are identical) If the boiler flashes the same code…it could be Boiler is laying ( Faulty PCB) or a wiring problem. If the boiler correctly locate the fault now in the flow tem sensor..the chances are the Themperature sensor is actually faulty. Well done PCB..it flashes F6 and telling its faulty flow tem sensor. Now let me do some resistance testing..set my multimeter to K…………………Boiler was repaired. client happy.. Client want me to do a service the boiler before next winter………….cool..
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