Baxi Due tec 33he

[neiltay]

Hi
Since i've had this boiler serviced i've got this annoying noise ,like whistling .It doesn't happen when the heating is on ,or when you turn a hot tap on only when we have a shower ,the pressure is about 2 bar everything else seems ok just the whistling noise any advice thanks neil

 

[adlplumbing]

call back the service engineer and ask him double check his work explain the sound s/he proably will come back and have look