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ACiQ PTAC Error Code HI

Room Temperature is Higher than Display Range

The indoor room temperature is higher than what the display screen can display (37 C or 99 F).

Error at Start Up or During Normal Operation

  • Measure the room's temperature with an independent thermometer to check if it is above this threshold. If it is above the standard operating temperature range, the unit will not operate.
  • If the temperature in the room is not above this threshold, reach out to the manufacturer for additional troubleshooting or part replacement.