Carrier Aquazone 50PCH PCV 007 Installation, Start-Up And Service Instructions Manual page 22

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
BLK
BLU
RED
(HI)
(MED)
(LOW)
Fig. 22 — PSC Motor, Three Phase/Single Stage, WSHP Open