Daikin Enfinity - Troubleshooting Faults and Issues

troubleshooting
MicroTech III unit controller and I/O expansion module status LED's and
fault outputs
Table 14: MicroTech III controller status LED's & fault outputs
Description Type* Yellow Green Red
I/O Expansion Communication Fail Fault ON Flash Flash
Invalid Conguration Fault Flash Flash OFF
Low Voltage Brownout Fault OFF Flash OFF
Emergency Shutdown Mode OFF Flash OFF
Compressor #1 High Pressure (HP1) Fault OFF OFF Flash
Compressor #1 Low Pressure (LP1) Fault OFF OFF ON
Compressor #1 Suction Temp Sensor Fail Fault Flash Flash ON
Freeze Fault Detect (Freeze Fault Protection Only) Fault Flash OFF Flash
Compressor #1 Low Suction Temp (LT1) Fault Flash OFF OFF
Room Temp Sensor Fail (with Room Sensor Control Only) Fault Flash Flash ON
Leaving Water Temp Sensor Fail (Freeze Fault Protection Only) Fault Flash Flash ON
Condensate Overow (Cooling & Dehumidication Modes Only) Fault ON OFF OFF
Serial EEPROM Corrupted Fault ON ON ON
Service Test Mode Enabled Mode Flash Flash Flash
Unoccupied Mode Mode ON ON OFF
Occupied, Bypass, Standby, or Tenant Override Modes Mode OFF ON OFF
Note: * The MicroTech III baseboard LED's mode / faults are listed in order of priority.
Table 15: I/O expansion module status LED's & fault outputs
Description Type Yellow Green Red
Baseboard Communication Fail Fault OFF Flash Flash
Compressor #2 High Pressure (HP2) Fault OFF OFF Flash
Compressor #2 Low Pressure (LP2) Fault OFF OFF ON
Compressor #2 Low Suction Temp (LT2) Sensor Fail Fault Flash Flash ON
Compressor #2 Low Suction Temp (LT2) Fault Flash OFF OFF
Entering Water Temp Sensor Fail (with Boilerless Electric Heat and Waterside Economizer) Fault ON OFF Flash
Low Entering Water Temperature (No Display with Boilerless Electric Heat) Fault OFF ON Flash
Fan is OFF Mode OFF ON OFF
Fan is ON Mode OFF Flash OFF
Note: Mode / Faults are listed in order of priority.
IM 1059-12 LARGE VERTICAL WSHP 42 www.DaikinApplied.com