System Monitoring: Red LED indicators on each output provide instant status updates for easier troubleshooting of low-voltage circuits

the insulator has likely failed and the assembly must be replaced

This MARS Blue Box series component provides the necessary phase shift for starting and running both the compressor and the condenser fan motor in residential and commercial air conditioning systems

For later series

Trane ACONT202AS11MA Thermostat R-134A System Monitoring: Red LED indicatorsThe Trane ACONT202AS11MA is a professional grade 3H 2C programmable thermostat engineered for precise multistage control of heating and cooling systems. Built for the rigors of industrial and commercial environments, this 24V low voltage control features an intuitive interface and a NEMA 4X rated enclosure for enhanced environmental protection. It supports extensive HVAC staging configurations, managing up to three stages of heat and two stages of