VELIT 2000U, Instruction Manual, Page: 21 / 22

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6.2 Unit not cooling
Turn on the unit and use a pressure gauge to measure the pressure at the low-pressure
port. Use this chart to find the nominal pressure value based on the ambient temperature.
If the pressure is lower than the nominal value, use a R134a recharge kit (can be purchased
from Auto part stores and Home Depot) to charge the unit to the desired pressure.
If there is oil or other signs of a refrigerant leakage, reach out to a mechanic or RV
technician to identify and fix the leak. Vacuum the system and charge with 400g of R134a.
Ambient (Outside)
Temperature
℉
Standard Low Side
Pressure Range
PSI
65 25-35
70 35-40
75 35-45
80 40-50
85 45-55
90 45-55
95 50-55