Solid Red TRIP LED, but system and compressor check OK

What does TRIP LED on, System OK mean?

The TRIP LED is illuminated, but initial checks indicate the system and compressor appear to be functioning normally. This may point to a wiring or configuration issue.

• Improper Y terminal wiring.
• Contactor coil voltage check issue.
• R and C terminals reverse wired.

Click steps to track your progress.

1. 1

   Turn off unit power supply and install a lockout tag.

2. 2

   Verify the Y terminal is wired correctly according to the wiring diagram.

3. 3

   Confirm that the voltage at the contactor coil falls below 0.5VAC when the system is not demanding operation.

4. 4

   Check if the R and C terminals are reverse wired.