Riello Flame sensor 20132566

This ionization flame sensor is designed for Riello gas boilers. It uses a flame rod as the sensing element to detect flame by the ionization principle. If no flame is detected, it immediately shuts off the gas supply. It is listed under article numbers 20132566 and 3007839, with SKU 20132566.

Flame sensors of this type are selected by detection principle (ionisation, UV, or IR), spectral range, response time, cable length and connector type, and mounting sleeve or thread. When replacing, ensure the sensing element (rod or cell) is clean and undamaged. The sensor must be mounted with a clear view of the flame, avoiding excessive heat or soot accumulation. The burner control must be compatible with the sensor output; an ionisation sensor requires a control rated for an ionisation signal. Always verify that the connector and cable length match the existing installation.

Typical failure modes for this kind of sensor include a contaminated optical window (in UV/IR models), an aged cell producing a weaker signal, or a broken sheath on an ionisation electrode. When a sensor fails, the burner control may lock out and interrupt fuel supply if it does not register a flame within the set safety time. Check that the sensing element is clean and undamaged, and that the sensor has a clear view of the flame without being exposed to excessive heat or soot.