Trane WC*150B***G Series Installation Operation & Maintenance page 55

WC-IOM-7 • Packaged Heat Pump
Troubleshooting
Unit Economizer Control (ECA) Troubleshooting
ReliaTel Control
Table 10. Verify economizer status by economizer actuator (ECA) LED indicator:
OFF: No Power or Failure
ON: Normal, OK to Economize
Slow Flash: Normal, Not OK to Economize
1/2 Second On / 2 Seconds Off:
Fast Flash -
Error Code:
Communications Failure
Pulse Flash: 2 Second On / 1/2 Second Off:
Error Code:
1 Flash: Actuator Fault
2 Flashes: CO2 Sensor
3 Flashes: RA Humidity Sensor
4 Flashes: RA Temp Sensor
5 Flashes: OA Quality Sensor
6 Flashes: OA Humidity Sensor
7 Flashes: OA Temp Sensor
8 Flashes: MA Temp Sensor
9 Flashes: RAM Fault
10 Flashes: ROM Fault
11 Flashes: EEPROM Fault
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