Bard 8620-236 - MV4000 Relay Kit

The Bard 8620-236 MV4000 Relay Kit is an OEM electrical service part used with Bard MV4000 series lead lag control systems, specifically the MV-4001B and MV-4001BC controllers. This relay kit is intended to restore proper switching of low voltage control signals inside the controller so staged heating and cooling calls, unit rotation, and related control functions operate reliably the way Bard designed. If you are troubleshooting intermittent controller outputs, units that do not respond correctly to lead lag commands, or a known field update requirement on an MV4000 controller, replacing with the correct Bard relay kit helps ensure proper fit and dependable operation when installed per the MV4000 instructions.

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