Ako F2 Error Code

What does Ako F2 mean?

F2 is the fan control parameter that defines whether the evaporator fans stop when the compressor stops. Setting F2 to 1 stops the fans when the compressor is off (reducing unnecessary air circulation over a cold, non-active evaporator). Setting F2 to 0 keeps fans running continuously regardless of compressor state. This is a configuration parameter, not a fault code, and its correct setting affects energy consumption and product temperature stability.

Symptoms

• If F2 = 1 (fans stop with compressor): fans de-energize each time the compressor cycles off.
• If F2 = 0 (fans always run): fans run continuously through all compressor off periods.
• Incorrect F2 setting may cause unexpected fan behavior observed during commissioning or maintenance.
• Fans stopping unexpectedly during compressor off cycles can raise cold-room temperature if F2 = 1 is set in a high-infiltration environment.
• If probe S2 faults (E2), F2 is still active but F0/F1 fan temperature control is bypassed.

Common causes

• F2 parameter configured to an incorrect value during commissioning.
• Application type change (from display cabinet to cold room) requiring a different F2 setting.
• Factory default F2 value inappropriate for the installed application.

Ask the AskWhiz AI about Ako F2

AskWhiz

online

Hi — I'm the Refrigeration demo. Ask me anything in this domain.

What causes Ako F2?Step-by-step fix for Ako F2?Is Ako F2 safe to ignore?

MessageHelp me troubleshoot Ako F2

Diagnostic steps

1. Verify the intended fan operation mode for the application

   Determine whether the application requires fans to stop when the compressor stops (F2=1) or to run continuously (F2=0). Display cases and cold stores have different requirements; consult the AKO commissioning guide for the application.

2. Check the current F2 value

   Enter the parameter menu and read the current F2 value. Compare it against the commissioning specification or the original installation notes.

3. Adjust F2 if incorrect

   Set F2 to the correct value for the application. Save the parameter and cycle the controller power if required to activate the change.

4. Verify fan behavior after adjustment

   Observe the fans through a full compressor on/off cycle. Confirm fans start and stop (or run continuously) as expected with the new F2 setting.

5. Document the F2 setting in the commissioning record

   Record the confirmed F2 value in the site commissioning record so future service visits can quickly verify the intended configuration.

When to call a professional

Call a licensed refrigeration technician if fan motor faults are suspected (fans not running despite F2=0 or not stopping despite F2=1), as this requires fan motor and contactor diagnosis beyond parameter adjustment. A technician is also needed if changing F2 does not produce the expected fan behavior.