Carrier Aquazone 50PCH PCV 007 Installation, Start-Up And Service Instructions Manual page 14

UPM STATUS LED - BLINK CODES
1 HIGH PRESSURE FAULT
2 LOW PRESSURE FAULT
3 CONDENSER FREEZE CONDITION
4 CONDENSATE OVERFLOW FAULT
5 BROWN OUT FAULT
6 EVAPORATOR FREEZE CONDITION
Fig. 14 — Constant Torque Motor, Single Phase/Single Stage, Better B or Complete C Control
50PC111002 Rev. 3