White-Rodgers 47D43-811 demand defrost control manages defrost for heat pump systems. It uses ambient and coil temperature sensors to detect ice buildup on the outdoor coil.
Its self-calibrating algorithm adapts to the system, with short-cycle protection, noise reduction and fault recall by pushbutton.
47D43-811 highlights
Demand defrost logic
Starts a defrost cycle based on actual coil conditions to save energy.
Included sensors
Comes with ambient and coil temperature sensors for complete changeout.
LED diagnostics with fault history
Speeds troubleshooting on the outdoor unit.
Short-cycle protection
Guards the compressor from rapid restart damage.
47D43-811 specifications
Function: Demand defrost for heat pump outdoor coil
Mounting: Plastic standoff mounting
Control type: Microprocessor-based
Included parts: Ambient sensor, coil sensor
Extra functions: Short-cycle protection, noise reduction, LED diagnostics
Brand: White-Rodgers
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Customer Reviews
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Put it in and the unit is running like normal again.
