Electronic controls and controllers are widely used on today’s refrigeration systems. These controls offer many benefits to the design and operation of a system, but they can add a level of difficulty when troubleshooting a system failure. The main difficulty arises from knowing how these controls are designed to operate.
We all know that in order for the basic system to operate, the compressor, along with its various components, needs to be operational. When an electronic board controls the operation of these loads, we need to know how the board controls these loads. What safeties are designed into its control sequence? Are there any time delays incorporated? Are there any safety lockouts? Is there a particular sequence of operation to the design?