Riello RDB1 RDB2 Oil Burner Motor Capacitor 4µF 20087035

Product Overview

The Riello RDB Oil Burner Motor Capacitor (Part Number: 20087035) is a 4µF electrical motor component designed for selected Riello oil burner systems.

Part number 20087035 is identified as a P2 4µF Capacitor, forming part of the burner's electric motor circuit.

The capacitor helps establish the electrical phase shift required for the motor to start and operate correctly.

Correct capacitor performance is important for reliable burner motor operation and the appliance's normal start-up sequence.

ℹ️ Product Condition Options:

This part may be available in New or Refurbished condition. Please select your desired option from the dropdown menu above. Refurbished capacitors should be professionally electrically tested to confirm correct capacitance, insulation integrity and suitability before installation.

Technical Insight & Common Failure Symptoms

The 4µF motor capacitor supports the operation of the burner's single-phase electric motor by providing the capacitance required for its motor circuit.

The capacitor is particularly associated with certain RDB burner motor configurations. The correct capacitance must match the motor manufacturer's specification.

Over time, capacitor performance may deteriorate due to electrical ageing, heat exposure or internal component failure.

Possible symptoms that may indicate a motor capacitor or associated electrical problem include:

• Burner motor failing to start.

• Motor humming without rotating correctly.

• Intermittent motor starting problems.

• Motor struggling to reach normal operating speed.

• Burner failing to complete its normal start-up sequence.

• Burner entering a safety lockout following a failed start.

• Visible damage or deterioration affecting the capacitor or its electrical connections.

These symptoms do not necessarily confirm a faulty capacitor, as similar problems may result from motor faults, wiring, electrical supply issues or other burner components. Correct professional diagnosis should be carried out before replacement.

Compatibility

This part (MPN: 20087035) is associated with selected Riello RDB1 and RDB2 oil burner systems.

Please verify the exact burner model, serial number, motor specification, capacitor capacitance and electrical connections against the manufacturer's technical documentation before ordering to ensure correct fitment.

Safety Advice

Oil burner motor capacitors and associated electrical components should only be inspected, removed or installed by a suitably qualified and competent oil heating engineer or electrical professional.

Always isolate the appliance's electrical supply before carrying out any work. Capacitors may retain an electrical charge after disconnection and must be handled and discharged using appropriate procedures. Follow the manufacturer's servicing instructions and complete all required electrical, burner operation and combustion safety checks before returning the appliance to service.