F37
Ferroli
Water Pressure Sensor Signal Error
Ferroli furnace shows F37; pressure reading on display may be abnormal or fluctuating.
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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
Faulty Ferroli pressure sensor, Blocked sensor connection pipe, Air trapped at sensor tapping point
How to Fix / Troubleshooting
Safety: Turn off power and allow the system to cool before working on water components.
Steps:
- Check actual pressure: Compare the displayed pressure with a mechanical gauge if available.
- Bleed air near sensor: If there is a bleed point near the pressure sensor tapping, release trapped air.
- Inspect sensor wiring: Ensure the pressure sensor connector is secure and undamaged.
- Reset: Power-cycle the unit and see if F37 clears.
Professional help: Replacement of the pressure sensor or cleaning of the sensor tapping should be done by a technician.
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Repair Difficulty
Medium
3/5
Required Part
Water Pressure Sensor
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