This genuine Bonaire control board (part number 5441212SP) is a direct replacement for MB4 and MB5 series 4/5 Star model gas heaters. It's the critical component for managing your heater's operations, ensuring reliable performance when you need it most.
Replacing a faulty PCB is often the quickest way to get a ducted gas heater back online when you've diagnosed a control issue, especially heading into a chilly Aussie winter.
Best For
- HVAC service technicians
- Gas heater installers
- Bonaire heating system maintenance teams
- Competent DIY owners repairing their Bonaire unit
Compatibility
This PCB is specifically designed for:
- Bonaire MB4 series 4/5 Star gas heaters
- Bonaire MB5 series 4/5 Star gas heaters
If you're running a different model, check fittings and specs before ordering.
Features
- Genuine Bonaire part number 5441212SP.
- Direct replacement for existing MB4 and MB5 series PCBs.
- Designed for 4/5 Star efficiency gas heater models.
- Ensures reliable and accurate operation of your Bonaire heating system.
Using It on the Job
- Isolate Power: Always turn off power to the gas heater at the main switchboard and use a multimeter to verify zero voltage before opening any access panels.
- Access Panel: Carefully open the heater's control panel to locate the faulty PCB.
- Document Connections: Take clear photos of all existing wiring connections to the old board. This is crucial for correct reassembly.
- Remove & Replace: Disconnect all wires, remove the old PCB, and install the new Bonaire 5441212SP board, ensuring it's securely mounted.
- Reconnect Wiring: Reconnect all wiring exactly as documented, double-checking against your photos and any manufacturer's wiring diagrams.
- Test Operation: Restore power and thoroughly test the heater's operation in all modes according to the Bonaire service manual.
Limitations & Safety Notes
- Installation requires electrical competence and adherence to local regulations and Australian standards.
- Always isolate power and verify zero voltage before attempting any electrical work.
- This control board is only for the compatible Bonaire MB4 and MB5 series 4/5 Star gas heaters.
- Incorrect installation can lead to component damage or unsafe heater operation.
Before you even think about ordering, make sure you've confirmed your heater model and the exact PCB part number. Snapping a pic of the old board's label is a foolproof way to avoid ordering the wrong part and wasting time on site.
Pair With
Pair with other Bonaire spare parts like fan motors or ignitors, and essential test equipment such as a digital multimeter, available in the HVAC Shop Controls & Electrical section.