Trane UniTrane Installation Operation & Maintenance page 103

Table 41. Operating Machine State LED Sequences and Codes
Sequence 1 Sequence 2
1 2 3 4 1 2
UNT-IOM-6
6. Read and record the operating machine state. Return the DIP
switches to the initial positions recorded in step 1. Short the test
inputs to set the address in the TUC EEPROM.
Example: Operating Machine State for Standby Mode
Sequence 1
1 2 3 4
5 6 7
Example: Operating control mode for purge mode
Sequence 3
3 4 1 2 3 4
Terminal Unit
Control (TUC)
Sequence 2 Sequence 3
1 2 3 4 1
5 6 7 5
Code Machine State
00 Manufacturing Test
2 Bad Configuration
4 Auto Cycle Test
6 Disable
8 Stop
10 Calibration
12 Latching Diagnostic
14 Freeze Shutdown
16 Soft Reset
18 Standby
20 Cooling
22 Heating
2 3 4
6 7
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