There Is Frost On The Suction Line (Without Climate Control)

There is frost on the suction line

Probable cause: Expansion valve stuck open

Recover A/C refrigerant A/C Refrigerant Recovery, then replace the expansion valve. Recharge the system to specifications A/C System Charging

Also check for

HVAC DTCs How To Troubleshoot The Heating And A/C Systems (Without Climate Control)