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The HEAT CONTROLLER LLC 15P86 is a defrost sensor harness designed to connect the defrost sensor to the control board in a heat pump or refrigeration system. This wiring harness carries the temperature signal from the defrost sensor, allowing the system to monitor coil conditions and initiate defrost cycles at the correct intervals. Installation is typically performed by licensed HVAC technicians during routine maintenance, sensor replacement, or control board service. The 15P86 is a direct OEM-style replacement part for restoring proper defrost control function.
The 15P86 defrost sensor harness is used in heat pump systems where accurate defrost cycle timing is critical to maintaining efficiency and preventing coil icing. It is suited for residential and light commercial applications. When the original harness becomes damaged, corroded, or fails continuity testing, this replacement restores the electrical connection between the defrost sensor and the system control board without requiring custom wiring modifications.
Designed as an OEM-style replacement defrost sensor harness for heat pump systems requiring the HEAT CONTROLLER LLC 15P86 part number.
Installation should be performed by a licensed HVAC technician. Disconnect all power to the unit at the disconnect box and at the breaker before handling any wiring or harness components. Route the replacement harness to match the original routing, avoiding contact with sharp edges or hot surfaces. Verify continuity with a multimeter before restoring power and returning the system to operation.
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