Ferroli
Chronic Pressure Loss
Ferroli furnace frequently loses pressure and needs regular topping up.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Leaking Ferroli expansion vessel diaphragm, Dripping pressure relief valve, Hidden leak in heating circuit, Micro-leaks at joints inside the boiler
How to Fix / Troubleshooting
Safety: Do not over-pressurise the system; stay within the range indicated on the Ferroli gauge.
Steps:
- Check PRV discharge: Look at the PRV outlet pipe (usually outside). If it is wet or dripping, the PRV is lifting.
- Inspect visible pipework: Look for damp patches, green staining, or rust around joints and radiators.
- Monitor pressure: Note the pressure when cold and when hot. A large rise suggests expansion vessel issues.
Professional help: Recharging or replacing the expansion vessel and PRV, and locating hidden leaks, must be done by a technician.
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Repair Difficulty
Hard
4/5
Required Part
Expansion Vessel
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