Trane BRD04879 Quad Relay Output Board
The Trane BRD04879 is a quad relay output board fitted inside the control panels of Trane chillers running Tracer CH530 or TD7 controls. It takes low-voltage command signals from the chiller controller and converts them, through four relays, into actual switching of high-power circuits, condenser fans, contactors, valves and auxiliary loads. When it fails, the controller issues commands that never reach the equipment: the logic is fine, the machine doesn’t respond.
Three things before you order. This is the four-relay board, not the dual-relay version, same function, different channel count and different connection. It connects via PLU01210, a 12-pin plug, confirm yours is present and sound, or order it alongside. And Trane specifies that this board requires programming with the Tracer TU service tool; it is not a drop-in.
Cool.sa supplies BRD04879 as a genuine Trane OEM part, held in stock inside Saudi Arabia alongside our full range of chiller spare parts, with a VAT invoice and delivery to project sites across the Kingdom.
Key Features
- Four independent relay output channels: double the switching capacity of the dual-relay board in roughly the same footprint
- Pluggable connectors: field wiring transfers without cutting or re-terminating
- PLU01210 12-pin connector: a specific companion part, not a generic plug
- Converts low-voltage control signals into high-power circuit switching
- Genuine Trane OEM: original specification and part marking
- Broad coverage: across the full Trane scroll, centrifugal and screw chiller range
- Consolidated replacement: for at least four legacy part numbers
Benefits of Using This Product
A failed output board produces a fault that reads as mechanical when it isn’t. The controller commands a fan or contactor, the command is logged, and nothing happens at the equipment. Teams check the load, the wiring, the contactor coil and the supply, and the actual break is a relay on a board that never closed.
The four-channel version specifically serves four circuits from one board: less panel space, fewer connection points, and fewer distinct spares to stock. Using the genuine OEM component also means relay contact ratings and switching behaviour match what the controller and connected loads were designed around.
Technical Specifications
| Specification | Value |
| Trane part number | BRD04879 |
| Catalogue description | BOARD; QUAD RELAY OUTPUT, WITH PLUGGABLE CONNECTORS, PROGRAMMING REQUIRED |
| Board type | Quad relay output |
| Output channels | 4 |
| Connectors | Pluggable |
| Connecting plug | PLU01210 – 12-pin connector |
| Controller compatibility | Tracer CH530, Tracer TD7 |
| Programming tool | Tracer TU |
| Programming | Required – configured to the unit |
| Universality | Unit-specific, not universal |
| Alternate references | BRD-4879, BRD4879 |
| Condition | New, genuine Trane OEM |
| Manufacturer | Trane / Trane Technologies (Service First) |
Internal: relay contact rating, switching voltage, dimensions and terminal layout are unverified — measure or pull from Trane before publishing.
Why Buy Your Trane BRD04879 From Cool.sa
- Genuine Trane OEM only: no aftermarket copies of control boards. Original packaging and marking, source documentation on request.
- Stock inside Saudi Arabia: while overseas distributors quote factory-order lead times plus international freight and customs.
- Compatibility confirmation before you order: which matters more on a part at this value. Send a photo and we’ll confirm the number and channel count.
- PLU01210 connector supplied with the order: rather than discovered missing with your hands inside the panel.
- Programming and commissioning support: with Tracer TU so the board goes in and works on the same visit.
- VAT invoicing for corporate, government and private-sector procurement.
- Delivery to project sites: Riyadh, Jeddah, Dammam, Khobar, Jubail, Yanbu, Ras Al Khair.
- Clearly published returns policy: on electronic components, particularly important on a high-value part.
- GCC export quoting: for the UAE, Qatar, Kuwait, Bahrain and Oman.
Frequently Asked Questions
Q1. Is this a genuine Trane part?
Yes. This is a genuine Trane OEM part supplied in original packaging with the original part marking. We do not sell aftermarket copies of this board. Source documentation is available on request.
Q2. Does it need programming after installation?
Yes. Trane’s specifications state that programming is required after installation using the Tracer TU service tool. If the board appears unresponsive after fitting, it may simply require configuration rather than being faulty.
Q3. My old board says BRD02948 or BRD02099. Is this the replacement?
Yes. BRD04879 is the current replacement for BRD02948 and BRD02099. Send us a photo of your existing board, and we can provide written confirmation before you order.
Q4. What’s the difference between BRD04879 and BRD04878?
Both are relay output boards, but BRD04879 has four channels while BRD04878 has two. The required channel count depends on the configuration of your chiller panel and should be matched before ordering.
Q5. Is this the main chiller control board?
No. BRD04879 is an output board, not the main chiller control board. The Tracer CH530 or TD7 main module is a separate component.
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