Daikin Outdoor Control Board (PCB) for RXC18AXVJU Ductless Mini Split (OEM PN 2558468 / 3P780885-1)
Genuine Daikin outdoor control board removed from a brand-new 18,000 BTU RXC18AXVJU Entra Series heat pump condenser that sustained cabinet damage. The board was never energized and is in perfect, unused condition — the exact OEM electronic control (PCB) assembly, complete with onboard EEPROM, for Daikin's 1.5-ton R-32 single-zone ductless mini split system.
What This Control Board Fits
This is the factory outdoor electronic control assembly used in the Daikin RXC18AXVJU — the 18,000 BTU / 1.5-ton, 18 SEER2 Entra Series R-32 heat pump condenser. It is the brain of the outdoor unit, managing inverter compressor operation, fan control, sensor inputs, and fault diagnostics, and it is the correct genuine-OEM part when the original board has failed or been damaged by a power event.
Because it is a direct factory pull carrying Daikin PCB number 3P780885-1, it matches the original connectors and mounting of the board it replaces — no adapters or cross-reference guesswork.
Ideal for: HVAC technicians diagnosing a non-responsive or error-coding Daikin RXC18AXVJU outdoor unit traced to a faulty control board.
Need the complete unit instead? See the matched Daikin 18K BTU RXC18AXVJU / FTXC18AXVJU Entra mini split system.
Always confirm the board number printed on your existing PCB before ordering. Request help identifying your part, contact Budget Heating, or call 813-885-7999.
Part Details
| Part Type | Outdoor Electronic Control (PCB) Assembly, with EEPROM |
|---|---|
| PCB Board No. | 3P780885-1 |
| Daikin Part No. | 2558468 |
| Daikin Reference | El. Compo. Assy. (EEPROM) — Ref. No. 7 (verified in Daikin repair parts manual) |
| Fits Model | Daikin RXC18AXVJU (18,000 BTU / 1.5 Ton Entra Series) |
| System Type | Single-Zone Ductless Mini Split Heat Pump |
| Refrigerant | R-32 |
| Condition | Genuine OEM — new, unused pull from a damaged unit |
All identifiers above are taken directly from the physical board and confirmed against Daikin's RXC-series repair parts documentation. Pin-out and voltage details should be verified against your unit's wiring diagram by a qualified technician.
Why Choose This Genuine OEM Control Board
Genuine Daikin Quality
- Authentic Daikin OEM control assembly, not a generic board
- Exact factory fit for the RXC18AXVJU outdoor unit
- Includes onboard EEPROM for correct model operation
- Pulled from a brand-new unit — never energized
- Inspected and confirmed in perfect condition
Smart Repair Value
- Revive a dead or error-coding outdoor unit affordably
- Avoids replacing an otherwise sound mini split system
- Verified genuine part number — order with confidence
- Ships ready for professional installation
- Backed by Budget Heating's parts support team
Frequently Asked Questions
What does the outdoor control board in the RXC18AXVJU actually do?
It is the main electronic control for the outdoor unit, managing the inverter compressor, outdoor fan, sensor inputs, and fault diagnostics for the Daikin RXC18AXVJU condenser.
Does this board include the EEPROM?
Yes. Daikin lists this assembly as "El. Compo. Assy. (EEPROM)," so the board ships with its onboard EEPROM that stores the model-specific operating data.
How do part number 2558468 and board number 3P780885-1 relate?
2558468 is Daikin's orderable service part number for the complete control assembly, while 3P780885-1 is the circuit-board number printed on the PCB itself. Both identify this same outdoor control board.
Was this board ever powered on?
No. It was removed from a new RXC18AXVJU condenser whose cabinet was damaged before the unit was ever installed or energized, so the board is electrically unused.
Is any setup required after installing this control board?
Because this assembly is model-matched for the RXC18AXVJU, a qualified technician should follow Daikin's service procedure to confirm correct operation and clear any stored fault codes after replacement.
Should the fault be diagnosed before replacing the board?
Yes. A control board can read as faulty when the real issue is a sensor, compressor, or power-supply problem, so professional diagnosis is strongly recommended before swapping the PCB.
