DIY HVAC Tools

Arctic King mini split code cF

Anti-cold-air (heating warm-up). Also shown as CF.

  • TypeStatus, not a fault
  • SystemDisplay
  • Can I fix it?Usually a homeowner fix
  • Applies toindoor unit display (four-character codes)

What cF means on a Arctic King

In heating mode the indoor fan waits until the coil is warm before blowing, so it does not blow cold air on you. The display shows cF during that wait. Normal.

On this platform, cF is a status, not a fault: the unit is telling you what it is doing; nothing is wrong.

What to do

You can almost always clear this yourself with the steps below.

  1. Wait a minute or two; the fan starts on its own once the coil is warm.

When to call a technician

This is not a fault. No technician is needed unless it will not clear.

Which Arctic King units show cF

This page applies to Arctic King Arctic King single-zone and Arctic King multi-zone units on the indoor unit display (four-character codes). Arctic King's own documentation lists cF as "Anti-cold-air (heating warm-up)", the same definition used across the Midea platform (four-character codes) it is built on. If your unit shows a code with a different shape (for example a four-character code, or a plain number), it is from a different table; use the lookup with your exact code.

Where Arctic King shows this code

indoor unit display (four-character codes): The display shows a two-letter prefix and a two-character suffix, either together (EH60) or alternating (EH, then 60). Write both parts down; the suffix is what identifies the fault. EH and EL are indoor-side faults, EC is an outdoor-side fault, and PC is an outdoor protection: the unit stopped itself to prevent damage.

Other Arctic King codes

Same part of the system as cF:

dFDefrost cycle runningCLFilter cleaning reminderAPWi-Fi pairing (access point) modeFPLow-temperature heating hold (46°F freeze-protection mode)FCForced cooling test modeLLRemote or wired controller lockedCPRemote on/off contact open
E0Indoor unit EEPROM parameter errorE1Communication error between indoor and outdoor unitsE2Zero-crossing signal detection errorE3Indoor fan speed out of control (indoor fan motor fault)E4Indoor room temperature sensor (T1) open or short circuitE5Evaporator coil temperature sensor (T2) open or short circuitECRefrigerant leak detected (low refrigerant charge)F0Overload current protection (compressor over-current)

All Arctic King error codes

cF on other brands

The same characters do not always mean the same thing. Check the brand on your unit.

Questions people ask

Is cF on a Arctic King mini split an error?

No. cF is a status message: anti-cold-air (heating warm-up). In heating mode the indoor fan waits until the coil is warm before blowing, so it does not blow cold air on you.

Do I need a technician for Arctic King cF?

You can almost always clear this yourself with the steps below. This is not a fault. No technician is needed unless it will not clear.

Sources

  • Arctic King mini split owner's manual (error code table)
  • Midea residential split service manuals

Updated September 2026. Codes and definitions vary by model year. If your manual disagrees with this page, your manual wins. Send a correction.