F10
Ferroli Communication Error with Remote Control / Bus

Ferroli furnace shows F10; may not respond to external controls.

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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

Incorrect wiring of Ferroli remote controller bus, Faulty remote controller, Reversed polarity on low-voltage bus

How to Fix / Troubleshooting

Safety: Isolate power before working on low-voltage control wiring.

Steps:

  • Check bus wiring: Verify that the two-wire bus from the Ferroli controller is connected to the correct terminals and with correct polarity if required.
  • Inspect cable: Look for damage, joints, or extensions that may cause poor communication.
  • Test without controller: Temporarily disconnect the remote controller and configure the furnace for basic operation (if supported) to see if F10 clears.

Professional help: Complex bus communication issues should be handled by a technician familiar with Ferroli control systems.

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Repair Difficulty

Medium 3/5

Required Part

Ferroli Remote Controller / Bus Interface
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