Precor Error Code 37 E-STOP Upper PCA/Lower PCA Mismatch / Stop Switch State Error

Mar 03, 2022

Applies to TRM800-14/18 treadmills, TRM2XX treadmills, SCL800 StairClimbers

Issue symptoms

TRM800-14/18 treadmills, TRM2XX treadmills

Error 37 -Stop UPCA - LPCA Mismatch

Error 37 may occur after an E-STOP event. If the E-STOP event is not successfully cleared in the lower PCA and the upper display believes the E-STOP has been cleared, an Error 37 will occur. Possible causes include pulling and resetting the E-STOP twice within the 10 second time-out period, pulling the E-STOP, switching off the treadmill, switching the treadmill back on, and then starting a course, or pulling the E-STOP, switching off the treadmill, reset the E-STOP, switching the treadmill back on, and then starting a course. Also possible is a break in the E-STOP line, or a loose cable connection.

SCL800 StairClimber

Error 37 Stop Switch State Error

The Console UPCA and LPCA both read the Manual Stop latch signal state. The LPCA acknowledges the state by sending this to the console over the serial communications.

A Console Stop key press or Remote Machine Control Stop Key press will clear the Manual Stop Latch signal and if the Console or LPCA does not recognize this change will flag this as an error.

• The Console detects a disagreement between reported LPCA state and Console state.

• The console key press state does not agree with Console Latch state.

Troubleshooting steps:

1. Verify the connectors are seated properly.
2. Verify Dielectric grease has been applied to both connectors.
3. Run the treadmill and move the communications cable in an attempt to duplicate the error. If it reproduces, change out the cable.
4. If this error is persistent and none of the above corrects the problem, install a new console.
5. If the console does not correct the problem, change the MC

Recommended Additional Action:

Add Dielectric grease (NYOGEL 760G 0.1 ml) to both connectors. Recommended for all products regardless of age. Precor part number PPP000000013012010.