NANO

858 HVAC (f) Manifold gauge will show following readings in case of excessive refrigerant or insufficient con- denser cooling: Troubleshooting chart for above condition: Symptom Problem Cause / Reason Remedy Insufficient cooling 1. Pressure is high on Excessive refrigerant 1. Check refrigerant both low pressure and in the system quantity high pressure side 2. Slowly vent out refrigerant if over charged 3. Blockage in refrigerant circuit (g) Manifold gauge will show following readings if air enters in the system: Troubleshooting chart for above condition: Symptom Problem Cause / Reason Remedy Insufficient cooling, low 1. Pressure is high on both Air has entered Recover refrigerant, pressure side piping is low pressure and high refrigerant system evacuate air and charge not cold even when pressure side purified refrigerant. touched and bubbles Check condenser cartridge. observed in sight glass