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Air-conditioning HV Service & Repair training is for technicians and diagnosticians, who would like to be able to correctly service, diagnose and repair EV-AC systems. You must follow correct procedures when working on EV-AC systems and this training will give you the knowledge and confidence.
COURSE ID: ECAC1-2
DURATION: 1 DAY
Prerequisites: It is advised that you have completed AECS’s Air-Conditioning Systems (ECAC1-1) training seminar.
Introduction & Safety
We will explain how EV-AC systems are built, from a technical perspective. There are very real dangers involved when working on EV systems. The technician needs to be fully versed with how the air conditioning system can become conducive to the HV system.
High Voltage battery range (state of charge). What is the state of charge and how is it measured? We look at driver behaviour reported by the ECU and what components of the car that need regular maintenance to maintain a healthy SOC (state of charge) and SOH (state of health).
We discuss how to measure and calculate the state of charge correctly and how to determine and change driver behaviour. We cover this as the AC compressor is driven by an electric motor via the HV battery. Without aircon servicing this will ultimately compromise vehicle range.
Service & Repair
We’ll look at high voltage aircon system service and repairs on hybrids and EV’s. Typical losses to refrigerant and the effect on HV battery SOC and SOH.
High Voltage & Pressure
In the training, we will cover high voltage submerged compressors and vehicle heat pump systems, including high-pressure control, via compressor RPM and torque control inverter.
Oils & Injection
We will discuss the process and considerations transitioning from PAG to POE oil in HV systems. We will go over best practices for stop leak detection and refrigerant identification in the AC system and lastly, we’ll look at R1234yf systems and HV dye injection.
The team at AECS are here to help. Let us know how we can be of assistance.