Environmental Control Unit (ECU) Troubleshooting & Repair

ECU Unit Info: Air Conditioner 60,000 BTUH, 208 VOLT, 3 PHASE, 50-60 HERTS Technical Manual – TM 9-4120-431-14 NSN 4120-01-543-0741 Serial No. 0911020 Part No. 184K0000-5; Model No. 60K IECU MFD By: DRS Environmental Systems, Inc. Florence, KY 41042-2911 6.7 LBS Refrigerant R410A Current issues: The ECU will only produce room temperature air, regardless of thermostat settings. The fan does not automatically turn on when the compressor kicks on. The ECU is required to blow hot/cold air as adjustments are made on the thermostat. The ECU requires troubleshooting/identification of the problem(s), repair the found problems, and ultimately return the ECU to a fully functioning ECU.

Division 23 -	Heating, Ventilating, and Air Conditioning (HVAC), Instrumentation and Control for HVAC, HVAC Air Distribution, Central HVAC Equipment.
Division 26 -	Electrical.
Division 27 -	Communications, Common Work Results for Communications.
Division 28 -	Electronic Safety and Security, Common Work Results for Electronic Safety and Security.