SprayTech part 0551611 is an Electronic Control Assembly that manages the operation of the piston pump motor, pressure monitoring, and system diagnostics. It interprets signals from pressure switches and user controls to regulate motor speed and ensure consistent spray output. Replacing a faulty control assembly restores reliable pump performance and electronic protection features on compatible SprayTech units.
| Part Number | 0551611 |
|---|---|
| Part Description | Electronic Control Assembly |
| Brand | SprayTech |
| Fits | EPX2255 |
| Condition | New |
The SprayTech 0551611 Electronic Control Assembly is the central brain of the EPX2255 piston pump. It controls motor operation, processes input from pressure transducers and switches, and provides diagnostic feedback. This module ensures the pump starts/stops correctly, maintains desired pressure, and protects against electrical faults.
A failed or erratic control assembly can cause the pump to run continuously, fail to start, or deliver inconsistent pressure. Replacing the assembly restores proper electronic management and extends the life of the pump.
| Motor control | Starts and stops the pump motor based on pressure demand |
|---|---|
| Pressure regulation | Monitors pressure transducer to maintain set pressure |
| Fault detection | Shuts down pump on overcurrent, thermal overload, or sensor failure |
| User interface | Processes inputs from on/off switch, pressure adjust, and displays status |
| No power / no display | Control board unresponsive despite proper input voltage |
|---|---|
| Erratic operation | Pump runs continuously, won't start, or randomly shuts off |
| Burnt components | Visible damage like charred traces, swollen capacitors, or burnt smell |
| Fault codes | Diagnostic LED or display indicates control board failure |
SprayTech part 0551611 is designed specifically for the SprayTech EPX2255 piston pump. Always confirm fitment using the correct parts diagram for your exact model and revision.
| SprayTech Model | Component |
|---|---|
| SprayTech EPX2255 | Electronic Control Assembly |
Control assembly issues can sometimes be traced to external components. When replacing the board, consider inspecting these associated parts.
A faulty transducer can send incorrect signals, causing the control board to behave erratically.
A failing motor or start capacitor can draw excessive current and damage the control board.
Loose or corroded connections can cause intermittent power and control issues.
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