My oil fired boiler has started whistling while running. The
high-pitched whistle starts about 10s after fireing up, stays pretty
constant while running and then tapers off after the boiler
Any suggestions as to what might be wrong? I've seen various
suggestions around a build up of limescale, but they seem to normally
be referring to a much lower pitched rumbling sound.
1. Build up of crap on the fan or in the housing
2. Motor bearings failing
3. Problem developing in the oil pump
4. Oil starvation in the feed to the pump caused by clogged filter
element either at the tank, between the tank and the boiler or within
the pump itself
5. Firestop fuel valve almost closed
If it takes 10s after firing it does suggest a fuel starvation problem
as a vacuum builds up in the pump in this time
On Wed, 2 Feb 2011 08:07:16 +0000, Piers Finlayson wrote:
Define "fireing up" do you mean blower starting or when the ignitor
fires to light the boiler some seconds later?
Thinking that it might a worn jet if it hasn't been serviced/replaced
every year or so. Though I'd expect that to stop PDQ after the blower
Kettling due to scale can be quite high frequency but I wouldn't call
that sound a "whistle", ie a single tone, it's more high freqency
On Wed, 02 Feb 2011 14:35:02 +0000, Piers Finlayson wrote:
Our propane-burning forced-air furnace sometimes does it, too, but not
always. As it's not consistent I've always assumed it's something to do
with atmospheric conditions (temperature, moisture content in the
combustion air etc.) rather than any kind of fault, but maybe it really
is a maintenance issue... (the furnace control board never displays any
kind of fault condition)
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.