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This is a pilot duty switch designed for low-voltage control circuits (typically 24V)
Common Questions Is the 1F78-151 compatible with 2-wire heat-only systems
Technical Architecture: Supports a 1
making it suitable for low to medium pressure steam systems
Carrier LH660010 Ignitor Module 321894-709 This is a pilot dutyThe Carrier LH660010 Ignitor Module is a critical integrated control component designed for precise ignition sequencing and flame supervision in high efficiency Carrier, Bryant, and Payne gas furnaces. This hot surface ignition (HSI) control board functions as the primary logic center, managing the inducer motor, gas valve timing, and flame rectification to ensure reliable heating cycles. Engineered to replace several legacy part numbers, including
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