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Duotone terrace — saffron brief on the left, garden-folded ledger on the right.
this Trane OEM board is recommended to ensure all proprietary communication protocols and safety logic are maintained
but ensure all HVAC controls and wiring connections are secure to avoid resistance-induced heat
Key Benefits: OEM Compatibility: Direct replacement for Maxon 25663 and Auburn IP-19
Indefinite Memory Retention: Uses non-volatile EEPROM to store schedules
Carrier HH79EZ003 Thermister Discharge 321894-708 this Trane OEM board isThe Carrier HH79EZ003 Thermister Discharge DTT is a critical OEM sensing component designed for precise monitoring of discharge gas temperatures in high performance HVACR systems. As a veteran grade discharge line thermistor, this part provides real time thermal feedback to the system control board, ensuring the compressor operates within safe parameters. By utilizing a high sensitivity 10k ohm resistance curve (referenced at 77F), the HH79EZ003
