Carrier 30RA502134 MBB Board R-22 Vibration Reduction: Factory-balanced design prevents

Vibration Reduction: Factory-balanced design prevents premature HVAC blower motor failure caused by shaft oscillation

the MARS U065NA1 features terminals approved for both 60°C and 75°C wire

OEM Compatibility: Replaces BLW00521 and BLW0521 components for a plug-and-play installation on compatible Trane/American Standard units

Built with an enclosed body design

Constructed from heavy-gauge aluminized steel

Carrier 30RA502134 MBB Board R-22 Vibration Reduction: Factory-balanced design preventsThe Carrier 30RA502134 MBB Board serves as the primary Main Base Board for Carrier 30RAP AquaSnap air cooled chillers. This microprocessor based controller manages critical refrigeration cycles, including compressor staging, electronic expansion valve (EXV) positioning, and fan speed modulation. To ensure accurate configuration and firmware compatibility, this board requires the specific model and serial number of the unit at the time of order. It