Warm Air Comes Out Of The Vents. The Suction Line Is Cool To Warm, The Discharge Line Is Warm To Hot, and There Is No Frost On

Warm air comes out of the vents. The suction line is cool to warm, the discharge line is warm to hot, and there is no frost on the expansion valve

Diagnostic Procedure:

1. Probable cause: Excessive air and/or moisture in the system, indicating a possible leak

2. Do the refrigerant leak check, A/C Refrigerant Leak Check and repair any leaks. Replace the receiver/dryer, Receiver/Dryer Desiccant Replacement (With A/C, 4-Door) then recharge the system to specifications A/C System Charging

Also check for:

- HVAC DTCs Reading and Clearing Diagnostic Trouble Codes
- Check the amount of refrigerant oil in the system