IR Intellisys or Xe-Series Fault Code

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HAT

Machine stops; High Air Temperature.

System

Trip

Symptom

Machine stops; High Air Temperature.

Diagnosis & fix steps

LOGIC: The discharge air temperature has exceeded the safety limit (usually 109°C / 228°F).

Red Seal field insights

This is the most common summer code. Check the oil cooler for dust. If it’s clean, your Thermal Control Valve is likely stuck, bypassing the cooler and sending hot oil straight back into the airend.

Same code keeps coming back?

That's a program problem, not a part problem. Book a 30-minute uptime review with Grant, a Red Seal Heavy Duty Technician.

Book an uptime review

Read before you touch anything

  • This is general reference information, not a repair manual. It is for trained, qualified technicians.
  • Fault codes, meanings and procedures vary by model, serial number and software version. Confirm the code and the procedure against the manufacturer's service manual before acting.
  • Follow the OEM service manual, torque specs and your site's safety procedures: lockout/tagout, block raised equipment, relieve hydraulic, fuel and air pressure, and let hot systems cool.
  • You use this information at your own risk. Adventure Mechanical and AM Fleet Integrity accept no liability for damage, injury, downtime or loss arising from its use.
  • Not affiliated with or endorsed by any manufacturer. Brand names are used only to identify the equipment a code applies to.

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