Upon arrival we spoke to customer about his concerns with the system freezing over outside. Performing our diagnostic we found the system to have high subcool and high superheat values indicating a restriction in the metering device. We spoke to the customer about our concerns and informed him we could get repair options for him in the morning when we get part availability. Currently system is cooling but does have the potential to freeze over again. Customer is aware of this and will monitor it until repair can be performed. .