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'HERM' for the Hermetic Compressor (40 MFD)
making it compatible with most BAS (Building Automation Systems) and thermostat controllers
straight-through body pattern supports mounting from 0 to 90 degrees in any direction from the upright position
As a direct successor that replaces White-Rodgers 21D64-1
jar includes a brush-top applicator for precise placement
Carrier HK42FZ088 Control Board Freon 'HERM' for the Hermetic CompressorThe Carrier HK42FZ088 Control Board is a genuine OEM furnace control board engineered to restore full operational command over residential and light commercial HVAC systems. As an essential integrated furnace control (IFC), this board manages critical sequences including ignition, inducer motor operation, blower motor timing, and safety circuit monitoring. It serves as a direct upgrade for several legacy components, effectively replacing HK42FZ057,
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