Trane Intellipak I Compressor Circuit Trip Troubleshooting Diagnostic

YOU are responsible for receiving proper SAFETY and DIAGNOSTIC and REPAIR training! KNOW PROPER Lock Out Tag Out procedures! WEAR proper PPE! Please work safely and do not rush. This video is meant for HVAC technicians that are properly licensed and insured or work for licensed and insured companies! Watching this video does not in itself qualify you to work on this equipment. It is only meant to be a guide for those in the industry that are also following safe working procedures!

1) Verify proper airflow across the condenser. Check ALL condenser fan motors, fan blades, and wiring. Check for dirty condenser coils. Verify proper condenser temperature thermistor readings.

2) Check for tripped compressor circuit breakers. If they’re tripped, check for a short to ground and a short across windings. If no short is detected with your multimeter, use a megger. (WARNING: Get proper training on how to use a megger to avoid INJURY or equipment DAMAGE!) If no short is detected, check for LRA. If the compressors check out, verify that the compressor circuit breaker is operating properly. If the compressor circuit breaker is NOT tripped, ensure the compressor circuit breaker auxiliary is operating properly. (N.O. means the Aux is open when the breaker is off or tripped.)

3) Check the 1F44 and 1F45 fuses, their contact in the socket, and their wiring.

4) Check the compressor module (in the compressor mounted junction box) for proper operation. Verify the compressor module thermistor is working properly. If desired, buy the adapter tool from Trane Parts and connect with your Android phone. Download the INTspector app to your Android device.

5) If you cannot pinpoint the cause of the diagnostic, install a *** fast acting 50 mA 250 VAC indicating fuse *** in PARALLEL with the safeties in this specific circuit. (See the Compressor Module wiring schematic. HPS, Compressor Module M1-M2, and Compressor Circuit Breaker Aux Switch.) If a safety opens even briefly, the 50 mA fuse cannot handle the load of the circuit and will open. When you return, locate the blown fuse and that’s the safety that’s opening. Verify if the safety is working properly or if the safety is faulty and remedy the problem. DO NOT use a higher rated fuse as this may bypass a safety possibly resulting in equipment damage!