CodeRegistry
Brands
  1. Home
  2. Haier
  3. Air Conditioning
  4. F39
About·Privacy·Terms

CodeRegistry — Your global library for technical solutions.

For your safety: always follow the equipment manufacturer’s official manuals. CodeRegistry is an independent help site and is not affiliated with the brands listed here.

F39

System high pressure switch off

Haier · Air Conditioning

What does F39 mean?

The high pressure switch in the system has activated and shut off operation. This is a safety measure to prevent damage from excessive pressure.

Common Causes

  • System high pressure switch activation

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check for refrigerant overabundance.

  2. 2

    Ensure the condensing temperature is not too high.

  3. 3

    Inspect the fan motor for proper operation.

  4. 4

    Reset the system after addressing the cause.

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 58)Search more codes in this manual