Worcester 38 CDi Classic combi whistling noise

[Matt06]

Hello, fitted worcester 38CDi classic combi yesterday, this morning customer switched it off as it was whistling/humming quite loudly

It seems to be when the fan runs at a certain speed

Fine all the other times

Called WB tech got passed to 3 people 3rd said it may be Membrane where air/gas mix sending a technician out on Monday to check

At first i thought could be the case not fitted properly and vibrating, It does it with the front cover off but it isn't quite so loud


Just wondered if anyone else has had this issue / Any thoughts


Thanks

 

[Scott_D]

Got plenty of brackets/clips on the pipework?

 

[Matt06]

as far as i can see there is enough clips on the pipes, theres only about 2 foot between bottom of boiler to work top 2 clips on each pipe in this space and hot, cold and gas go below the worktop which i don't know how many clipsare on these , rest go up the wall in a cupboard which is clipped every meter and then through the ceiling joists

 

[kris]

What was your combustion readings like , and the gas rate test was that satisfactory ?

 

[Matt06]

Hi, Yes combustion readings spot on and gas rate , but lowered CO2 on max rate which quitened it down quite alot,

 

[Rich8]

I've had that one before sounds like a plane taking off Lol new membrain sorts it

 

[Kevin D]

Register plate, or membrane if you like sometimes go through ant touch the fan blades.