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The Bard CMA-25 is an OEM low ambient control (low ambient fan control, WA121) designed for 1 ton Bard wall-mount air conditioners to help maintain stable head pressure and dependable cooling performance when outdoor temperatures drop into cooler conditions. This factory-correct control manages condenser fan operation so the system can run more consistently in low ambient cooling applications, making it a common field replacement when a unit short cycles on pressure, struggles to cool in cold weather, or has a failed low ambient module. For best results, match the CMA-25 to the unit model and wiring diagram in the Bard service literature before ordering to confirm compatibility and voltage requirements.