IR P185WIR & XP185WIR Troubleshooting: Unit Fails to Shutdown
When your Ingersoll Rand P185WIR or XP185WIR doesn’t shut down properly, it’s more than just an inconvenience—it’s a real safety issue. Whether it's still running after you turn the key or refusing to stop when triggered, here’s how to troubleshoot and fix the problem.
Common Causes of Failure to Shutdown
- Defective switches: If the shutdown, oil pressure, or temperature switches are stuck or faulty, the shutdown circuit may never engage.
- Defective shutdown solenoid: If the solenoid that cuts off fuel or air is stuck open or won't energize, the engine won’t shut down when commanded.
- Malfunctioning relay: A bad relay can prevent the shutdown signal from reaching the solenoid or stop switch.
- Defective start switch: Sometimes the issue isn’t in the shutdown system at all—it’s a start switch stuck in the "run" position, continuously powering the engine circuit.
Recommended Fixes
- Inspect and replace defective pressure, temperature, or shutdown switches.
- Test and replace the shutdown solenoid if it’s stuck or failed.
- Replace any malfunctioning relays that aren’t properly transmitting shutdown signals.
- Inspect and replace a defective start switch if it’s stuck or faulty.
Wrap-Up
When your compressor won’t shut down as it should, it’s a clear warning something in the electrical or fuel cut-off system needs attention. Catch it early to prevent overheating, mechanical damage, or even serious safety risks with your P185WIR or XP185WIR.