This Braemar Ducted Heater Circuit Board (PCB) is your direct replacement for specific TH4, TH5, TE, and TG series gas heaters, getting faulty units back up and running. It's a critical component, handling ignition, flame sensing, and fan control, which means a dead board usually means a dead heater. We've all been called out to a chilly house in winter, and having the right control board on hand saves you a trip and keeps the customer happy.

Designed to suit a range of Braemar's popular ducted gas heating systems, this PCB brings reliability back to your installs and service calls across Australia's varied climate.

Best For

• HVAC Technicians performing ducted gas heater repairs.
• Service and maintenance teams for residential heating systems.
• Homeowners with competent electrical skills diagnosing their own Braemar heater faults.

Compatibility

This circuit board, part number SY639451 (also known as Seeley PN 639451), is a direct fit for the following Braemar ducted gas heater models:

• TH4 Series
• TH5 Series
• TE Series
• TG Series
• TX Series
• TA Series
• TE4 Models
• TE5 Models
• TG4 Models
• TG5 Models
• TSS Models

If you're running a different model, check fittings and specs before ordering.

Features

• Direct replacement Braemar Heater Circuit Board.
• Controls ignition, flame detection, and fan operation.
• Essential for restoring full functionality to specified Braemar ducted heaters.
• Part number SY639451 / Seeley PN 639451 for clear identification.

What's in the Box

• 1 x Braemar Ducted Heater Circuit Board PCB (SY639451 / 639451)

Using It on the Job

1. Isolate Power: Always shut off mains power to the heater at the breaker and confirm with a multimeter before touching any wiring.
2. Access the Board: Carefully remove the heater's access panel to expose the existing PCB.
3. Document Connections: Take clear photos or label all wiring connections to the old board before removal.
4. Remove Old Board: Disconnect all wiring and mounting screws from the faulty PCB.
5. Install New Board: Mount the new SY639451 PCB securely and reconnect all wiring precisely as documented.
6. Test Operation: Restore power, follow the heater's start-up sequence, and check for correct ignition, fan operation, and any fault codes.

Limitations & Safety Notes

• Installation and electrical work on gas appliances should only be performed by a licenced gasfitter or electrician.
• Always isolate power and lockout before commencing work to prevent accidental energisation.
• Ensure the replacement board (SY639451) matches the original board's specifications and part number for your specific Braemar model.
• Incorrect installation can lead to damage to the heater or pose safety risks.

Tradie Pro Tip: Before you condemn the board, always check the simpler stuff first. Look for loose connections, faulty ignitors, or clogged pressure switches. A new board won't fix a separate peripheral fault.

Pair With

Consider pairing this with a reliable multimeter for electrical diagnostics, or a new ignitor or flame sensor if you're doing a full service on a problematic Braemar ducted heater. Check out our range of test instruments and heating spares.