All electrical components and switchgear are housed in the control panel installed in the electrical control room of the coach, and no electrical parts are housed in the rooftop unit. This means that faults can be determined without needing access to rooftop HVAC unit. All faults and trips can easily be address from the control box, without needing access to the rooftop HVAC unit.

All electrical connections, looms and the electronic control panel as well as electrical control gear are designed and selected for operation in railway environments, which include adverse temperatures as well as severe shock and vibration.

The HVAC unit is equipped with custom designed electronic controllers, capable of all control and safety functions. The touch screen controller activates subsystems as required to regulate the cabin temperature to the desired setting on the control panel (HMI). The system has a Bluetooth login interface for remote monitoring via a smartphone app and/or laptop. Installation of the unit requires substantial modifications, and it’s suggested that the system is designed with the correct interfaces in place.