went to a job to day ,sealed system !heat only boiler ! customer complain boiler does not fire some time ! some time it does !
checked all electric -ok
pump 230v, read resistance L-N-SOME READING
L-E- OL
N-E-OL
opened the bleed screw put mt old ph driver and pump stopped very low resistance !!!
3 port MOTORISED VALVE-when switching form A to B makes banging noise like is stack !
advised to change pump and 3 port valve !
my question about resistance on the pump ? when i did baxi training they mentioned
pump is hard working therefore low resistance
L-N ;L-E ; E-N -and should be the same give or take %5-%10 !
am i wrong ?????
checked all electric -ok
pump 230v, read resistance L-N-SOME READING
L-E- OL
N-E-OL
opened the bleed screw put mt old ph driver and pump stopped very low resistance !!!
3 port MOTORISED VALVE-when switching form A to B makes banging noise like is stack !
advised to change pump and 3 port valve !
my question about resistance on the pump ? when i did baxi training they mentioned
pump is hard working therefore low resistance
L-N ;L-E ; E-N -and should be the same give or take %5-%10 !
am i wrong ?????
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