If your unit isn’t cooling, you’ll want to check a few things. First, check the thermostat to make sure it is turned down. The thermostat should be set to temperature and set to “Cool.” Check that the circuit breaker is turned to “On” so that power is going to the unit.
Check the air filter and condenser: if your air filter is dirty, your condenser can freeze. If you have an outside unit, check to make sure that it is actually running and clear of debris.
If water is leaking, be sure all drain hoses are clear.
If you are unable to find the cause, you may need to make an air conditioning inspection and repair appointment.