Thumbnail Filmstrip of 56-1956-00: Replacement VR-21 Regulator Control Board for Onan 332-1956 Images
Replacement Onan Voltage Regulator Control Board
- Mounting footprint and terminal locations are identical to original board.
- Heavy conformal coating applied for moisture and vibration resistance.
- Upgraded components used throughout the board.
- Improved, more durable K1 relay.
- Rugged barrier strip and improved potentiometers.
- This item is built in the USA and backed by a 2-year warranty
Maintenance Suggestion: When replacing the Onan VR21 Controls, Flight Systems Technical Service recommends replacing the SCR Pack*. You can purchase the SCR pack directly from us or through an Onan dealer.
*Older units may use a multi-component SCR assembly (332-0491) if this has failed, we can convert to use the newer SCR Pack, but the assembly must be sent to our shop.