Burner indicates lockout due to too many resets or manual interventions in a short period

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

Underlying unresolved ignition or flame problem, User repeatedly pressing reset, Control box safety lock after multiple faults

Safety: Do not continue to press the reset button. This can cause a dangerous accumulation of unburned fuel.

Steps:

Wait and power cycle: Turn off power for several minutes, then restore. Do not reset more than once.
Diagnose root cause: Investigate ignition, fuel supply, and flame detection issues (see A01, A02, A06).

If the burner continues to require frequent resets, shut it down and call a qualified Riello service technician.

Professional Required 5/5