Riello Servomotor 3003887

The Riello 3003887 is a servomotor used on Riello RS range burners. It drives the burner's moving air regulation components through their set positions during the start-up sequence and running cycle. The unit carries the SQN designation within the Riello burner spares range.

• The burner locks out during start-up because the air regulation does not reach its firing position.
• The servomotor buzzes, stalls or fails to move when the burner runs through its sequence.
• The burner runs erratically or at the wrong output because the actuator position is not held.
• The motor body runs hot, smells of burnt winding or shows signs of mechanical wear.
• Repeated lockouts that clear only after the actuator is manually repositioned.

• Read the model and code from the burner data plate and match them against the fitment list above.
• Check the marking on the servomotor currently fitted to confirm the SQN type and part number.
• Confirm the electrical connection arrangement on the existing unit matches the replacement before fitting.
• If the burner code is not listed, check the manufacturer's parts list for that appliance before ordering.