WHEN BOILER IS TURNED OFF AFTER BEING ON FOR SOME TIME WE SOMETIMES HEAR BUBBLING GURGLING NOISE FROM BOILER AREA OR PIPES CLOSE TO BOILER IT IS VERY HARD TO PIN POINT ACTUAL AREA AS IT IS A BACK BOILER.WE do not hear it every time it is turned off which makes us think air is in system ?
WE HAVE CLEANED AND DRAINED SYSTEM,THEN PUT INHIBITOR IN APPROX 3 WEEKS AGO BUT STILL HEAR THE BUBBLING WHEN TURNED OFF(NOT EVERY TIME WE TURN OFF) I HAVE TURNED DOWN BOILER THERMOSTST TODAY TO 1 (WAS ON 3) AS ON HAVE READ THIS SORT OF PROBLEM CAN BE BOIILER THERMOSTST PROBLEM.APPROX 10 YEARS AGO WE HAD LEAK ON BOILER ENGINEER REPLACED SEALS AND HAS BEEN FINE SINCE,ALSO CANNOT SEE ANY SIGN OFF NEW LEAK COMING FROM BOILER.
JUST TO MAKE CLEAR THIS ONLY HAPPENS WHEN SYSTEM IS TURNED OFF.
WE HAVE CLEANED AND DRAINED SYSTEM,THEN PUT INHIBITOR IN APPROX 3 WEEKS AGO BUT STILL HEAR THE BUBBLING WHEN TURNED OFF(NOT EVERY TIME WE TURN OFF) I HAVE TURNED DOWN BOILER THERMOSTST TODAY TO 1 (WAS ON 3) AS ON HAVE READ THIS SORT OF PROBLEM CAN BE BOIILER THERMOSTST PROBLEM.APPROX 10 YEARS AGO WE HAD LEAK ON BOILER ENGINEER REPLACED SEALS AND HAS BEEN FINE SINCE,ALSO CANNOT SEE ANY SIGN OFF NEW LEAK COMING FROM BOILER.
JUST TO MAKE CLEAR THIS ONLY HAPPENS WHEN SYSTEM IS TURNED OFF.