Carrier WeatherMaker 48A2020 Controls, Start-Up, Operation, Service And Troubleshooting Instructions page 202

APPENDIX F — OPTIONAL FACTORY-INSTALLED LOW AMBIENT MOTORMASTER
4. Restore factory defaults by changing the value in P48 using
UP and DOWN buttons and then storing the value by press-
ing MODE.
5. Press MODE again to re-display the value of P48.
Fig. Q — Low Ambient Motormaster V Wiring (48/50A020-060 Units Shown)
6. Change the value of P48 to the desired factory default mode
using UP and DOWN buttons then press MODE. The Mo-
tormaster V control is now restored to factory settings.
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V CONTROL (cont)