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LED2 6 Flashes, LED1 5 Flashes

Hydraulic Indoor Unit LED2 (Green) 6 Flashes, LED1 (Red) 5 Flashes - Outdoor unit IPM error

Fujitsu · Waterstage SuperHP Heat Pumps

What does LED2 6 Flashes, LED1 5 Flashes mean?

This signifies an error with the Intelligent Power Module (IPM) in the outdoor unit, a critical component for power management and control.

Common Causes

  • IPM component failure.
  • Overcurrent or overvoltage condition affecting the IPM.
  • Overheating of the IPM module.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Turn off the main power supply to the heat pump for 30 seconds, then turn it back on.

  2. 2

    Ensure the outdoor unit has adequate airflow and is not obstructed.

  3. 3

    If the error persists, use the 'Reset HP' function (Line 6711) in the control system.

  4. 4

    Contact a qualified service technician for IPM inspection or replacement.

Browse all codes in this manual (60)
Verified technical data. Last updated: April 2026

Related Faults

10Error 10 - Outdoor sensor fault100Error 100 - Two master clocks on bus102Error 102 - Clock without running supply
Source: Fujitsu Waterstage SuperHP Heat Pumps
Open Manual (Page 48)Search more codes in this manual