I have had an Ideal Classic FF 360 boiler installed for approx 4 months. Recently it has started making a knocking/creaking noise every time it fires and then it stops. As soon as the boiler fires again it makes the same noise once again. Otherwise the boier appears to be working correctly. Does anybody have any suggestions.
Noisy Boiler
- Thread starter MikeK
- Start date
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Contradiction - heating working fine??? But you said "then it stops"
What stops? The boiler or the noise?
Could still be the pump - they can go slow, impellers can come off/loose.
Could be a wiring error - boiler starts then valve opens which starts pump.
Is there a bypass?
Try: turn boiler off at its thermostat. turn progr on and room thermostat up. Pump may start - depending on wiring. Note whether it does or not. Then turn boiler stat up to start boiler. Any change?
If that doesn't work put HW-only on, with cyl stat very high. When hw is hot turn boiler stat down but not off - boiler will cycle on/off with pump remaining on. Same noise?
Could be corrosion gas collecting in boiler when it stops - does system collect "air" anywhere you've noticed? Put some corrosion inhibitor in the header tank (Sentinel X100 or Fernox MB-1)
What stops? The boiler or the noise?
Could still be the pump - they can go slow, impellers can come off/loose.
Could be a wiring error - boiler starts then valve opens which starts pump.
Is there a bypass?
Try: turn boiler off at its thermostat. turn progr on and room thermostat up. Pump may start - depending on wiring. Note whether it does or not. Then turn boiler stat up to start boiler. Any change?
If that doesn't work put HW-only on, with cyl stat very high. When hw is hot turn boiler stat down but not off - boiler will cycle on/off with pump remaining on. Same noise?
Could be corrosion gas collecting in boiler when it stops - does system collect "air" anywhere you've noticed? Put some corrosion inhibitor in the header tank (Sentinel X100 or Fernox MB-1)
Sure he can try - but the installer may have given no undertaking, and the boiler manufacturer will say it's an installation problem.
If the problem were say that the thing wouldn't light, it would be easier to deal with.
If the problem were say that the thing wouldn't light, it would be easier to deal with.
Oh right.
See if noise changes as described above - but the easiest likely thing to try - lob some inhibitor in the header tank. It will take a couple of weeks to get into the system unless you drain some water out from a drain point first. Let us know how it goes.
See if noise changes as described above - but the easiest likely thing to try - lob some inhibitor in the header tank. It will take a couple of weeks to get into the system unless you drain some water out from a drain point first. Let us know how it goes.
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