(Error 4): PRIME is overheating
Your Signal Booster is overheating. Please ensure that your Signal Booster is clear of any blockage. If you have your PRIME in an exceptionally warm area you may need to relocate the device to ensure that the Signal Booster does not continue to overheat. Once PRIME has cooled it will operate as normal.
Normal operating temperature of the Cel-Fi Signal Booster is 0-65ᵒ Celsius.