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F27

F27 (7 flashes) — Compressor current sampling circuit fault

Haier · Air Conditioning

What does F27 mean?

There is a fault in the circuit responsible for sampling the current flowing to the compressor. This affects the unit's ability to monitor compressor load.

Common Causes

  • Faulty Power Module
  • Damaged Outdoor PCB
  • Faulty Compressor

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Turn off the power supply for 1 minute, then restart the unit.

  2. 2

    Check for any loose wiring related to the compressor.

  3. 3

    If the error remains, a technician should inspect the Power Module, Outdoor PCB, and compressor.

Browse all codes in this manual (103)
Verified technical data. Last updated: April 2026

Related Faults

1Error Code 1 — Outdoor PCB EEPROM fault10Error Code 10 — Defrost sensor fault11Error Code 11 — Compressor suction temperature sensor fault
Source: Haier Air Conditioning
Open Manual (Page 32)Search more codes in this manual