Thermostat does not go below 55 degree could it

Thermostat does not go below 55 degrees. Could it be its low on the refriderate coolant? (freeon) ? Other than the cooling temp problem everything else appears to be running ok

You should clean them condenser coils and check the fan motor. That is something that is fairly easy to do. Get some coil cleaner from ace hardware and go by directions. Check that fan motor. If it ain't going while the compressor is going that is your problem.