Ferroli
Insufficient Heat Output
Ferroli furnace runs but radiators or warm air outlets remain lukewarm or cold.
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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
Blocked Ferroli plate heat exchanger (on combi units), Partially closed system valves, Undersized or failing circulation pump, Incorrect boiler temperature setting
How to Fix / Troubleshooting
Safety: System water can be hot; allow to cool before touching pipework.
Steps:
- Check temperature setting: Ensure the heating flow temperature on the Ferroli control panel is set high enough for the system design.
- Open valves: Confirm all radiator valves and isolation valves near the furnace are fully open.
- Bleed radiators: Remove trapped air that can reduce heat transfer.
- Check pump: Listen and feel for the Ferroli pump running; if very hot and noisy, it may be failing.
Professional help: A technician may need to powerflush the system, replace the pump, or clean/replace the plate heat exchanger.
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Repair Difficulty
Medium
3/5
Required Part
Circulation Pump
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