IR P185WIR & XP185WIR Troubleshooting: Engine Temperature Lamp Stays Off
If the engine temperature warning lamp on your Ingersoll Rand P185WIR or XP185WIR doesn’t come on—even during a startup self-test—you could be flying blind. The temperature lamp is a critical early warning system, and if it’s not working, you won’t know if the engine is overheating. Here's how to troubleshoot the problem.
Common Causes of Engine Temperature Lamp Staying Off
- Bulb burned out: The simplest and most common cause—a burned-out lamp won't illuminate even if there’s a real problem.
- Loose wire connection: A loose, disconnected, or corroded wire in the indicator circuit can interrupt the signal to the lamp.
- Malfunctioning circuit board: If the board that manages system indicators fails, the lamp might not receive a signal to turn on.
- Defective engine belt break switch: If the switch that monitors the belt break fails, it can prevent temperature alarms from functioning properly.
Recommended Fixes
- Inspect and replace the indicator lamp bulb if it's burned out.
- Check and tighten all wire connections related to the temperature lamp and shutdown system.
- Test and replace the malfunctioning circuit board if other indicators are also behaving erratically.
- Inspect and replace a defective belt break switch to ensure proper system monitoring.
Wrap-Up
Don’t assume “no light” means “no problem.” A non-functioning engine temperature lamp can leave you blind to serious overheating issues. A few quick checks can protect your P185WIR or XP185WIR from silent—and expensive—damage.