Error code “HF:2” = Heater failed
Error code “HF:3” = Similar to “HF:1” heater is in an uncontrolled state
Solution: First, try to power cycle the printer (unplug, and plug back in). If the error messages occur again then hardware has failed, which means either heater wires are broken or heater controller is fried. Second, confirm the heater wires have not broken or been disconnected on either end. Otherwise, please see the worst-case scenario below.