Description
Designed for industrial and residential heating oil burner ignition systems
How do I verify if the switch is faulty
It features a NEMA 48Y frame with a 5
though horizontal upright is preferred for maximum sensitivity
making it suitable for both standard HVAC and low-temperature refrigeration applications
Heatcraft Refrigeration 89704304 Smart Controller 320788-702 Designed for industrial and residentialHeatcraft Refrigeration 89704304 Smart Controller with New REF is a refrigeration control module designed for precise system management in commercial HVACR applications. This controller is used to regulate evaporator performance, manage temperature setpoints, and optimize defrost cycles in refrigeration racks, walk in coolers, and other cold storage systems. Built for integration into modern refrigeration control architecture, it supports stable
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy

























