The Avantco KL-4-12 (YH20200716) Mainboard Controller is a genuine OEM electronic control module designed for reliable and precise operation of Avantco VOA-70 Series open-air merchandisers. This mainboard regulates key functions including temperature management, compressor cycling, fan operation, defrost control, and system monitoring. If your merchandiser experiences cooling inconsistencies, error codes, or electronic malfunctions, replacing the controller is the correct solution. Key Features OEM mainboard controller for VOA-70 Series Manages compressor, fan, defrost, and temperature control logic Ensures stable performance and accurate cooling regulation Designed for long-lasting commercial reliability Plug-and-play replacement with factory-matched wiring Specifications Part Number: KL-4-12 Alternate Part Number: YH20200716 Type: Mainboard / Electronic Controller Function: System logic, temperature control, and equipment operation Application: Open-air merchandisers Compatible Models: Avantco Refrigeration VOA-70W Avantco Refrigeration VOA-70B Why Choose This Item This OEM controller delivers precise cooling control, improved system reliability, and smooth, efficient operation. It is the ideal replacement to restore accurate performance and protect your VOA-70 Series merchandiser from system faults, ensuring dependable cooling in demanding commercial environments.