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Chrome-bevel sheet on grid paper — specs and return notes filed under the bay.
Direct OEM Compatibility: Verified replacement for 20293901 and 620880 ensures precise fitment in specified Goodman heat pumps
Rugged Silver Contacts: Equipped with high-conductivity silver contact material for a 10 Amp load rating and long-term switching reliability
provided the liquid conductivity falls within the 10K ohm sensitivity threshold
When should this O-ring be replaced
Lochinvar & A.O. Smith 100277781 Control 326058-755 Direct OEM Compatibility: Verified replacementThe Lochinvar 100277781 Control (Model FB751 1251) is an integrated control board engineered specifically for Crest Heating Boilers. As a critical OEM replacement part, this module manages the firing sequence, ignition control, and safety parameters for high efficiency hydronic systems. This model is a direct boiler part replacement for units with serial numbers beginning with 4015, ensuring seamless integration with existing HVAC wiring harnesses and