Carrier Aquazone 50PSW025-420 Installation Instructions Manual page 18

Water-to-water source heat pump with puron refrigerant (r-410a)
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UPM STATUS LED - BLINK CODES
HIGH PRESSURE FAULT
1
2
LOW PRESSURE FAULT
3
CONDENSER FREEZE CONDITION
4
CONDENSATE OVERFLOW FAULT
5
BROWN OUT FAULT
6
EVAPORATOR FREEZE CONDITION
Fig. 13 — Unit Size 025-071, 180, 210; 3-Phase W2W Open Control Package
18

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