No cool main level system. Found system frozen up due to low r410a levels. De iced coil and performed leak search on full system. Leak detector did not detect leak. Most likely leak would be located in evaporater coil. Customer wants to recharge system with leak seal for now and understands that leak seal is not guaranteed and may not work. Recharged system and added leak seal. Tightened loose service top caps.System is cooling at this time.