Display shows E08, furnace may shut down due to detected internal board fault

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.

Possible Causes

Power surge damage, Component failure on PCB, Moisture or condensation on electronics, Incorrect supply voltage

Safety: Turn off power at the breaker.

Check supply voltage: Verify that the mains voltage matches the rating on the Beretta furnace nameplate.
Inspect PCB: Open the control compartment and look for obvious damage, corrosion, or water marks on the board. Correct any source of water ingress (roof leaks, condensate leaks) before replacing parts.
Power cycle: After ensuring the board is dry and connections are secure, restore power once. If E08 reappears, the board must be replaced.

Professional Required 5/5

Main Control Board

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