Controller Circuit Boards - Trane Tracer AH540 Setup And Operation

Chapter 1 Overview and specifications
4

Controller circuit boards

The main controller board is the same for both Tracer AH540 and Tracer
AH541 (see Figure 1), but the termination boards are different (see
Figure 2 on page 5 for Tracer AH540 and Figure 3 on page 6 for Tracer
AH541).
Figure 1. Tracer AH540/541 main controller board
Supply fan LED (green)
Exhaust fan LED (green)
DX 1 or Electric 4 LED (green)
DX 2 or Electric 3 LED (green)
DX 3 or Electric 2 LED (green)
DX 4 or Electric 1 LED (green)
Service LED (red)
Service Pin button
Comm LED (yellow)
Test button
Status LED (green)
Operator-display connector
Universal analog input TB43 (IN13)
CNT-SVX05B-EN