Della CL status display

What it means

CL is the filter-duty reminder. It is a maintenance reminder to check and clean the user-removable indoor filter, not a hardware failure by itself.

Urgency

Likely causes

Homeowner fix

Turn the unit off, remove only the user-accessible filter, clean and dry it according to the owner's manual, then reinstall it fully. Reset the reminder from the controller if your model requires it.

When to call a pro

Call for service only if the filter is clean and seated but airflow remains weak, the reminder will not clear, or another fault code appears.

Repair vs replace

This is routine maintenance or normal operation, not a repair-or-replace decision.

• Della Econo 11,500 BTU R-32 115V (048-IF-11K1VR-17S-IN / 048-IF-11K1VR-17S-OUT)

  Econo Series

• Della Econo 11,500 BTU R-32 208/230V (048-IF-11K2VR-17S-IN / 048-IF-11K2VR-17S-OUT)

  Econo Series

• Della Econo 17,000 BTU R-32 208/230V (048-IF-17K2VR-17S-IN / 048-IF-17K2VR-17S-OUT)

  Econo Series

• Della Econo 23,000 BTU R-32 208/230V (048-IF-23K2VR-17S-IN / 048-IF-23K2VR-17S-OUT)

  Econo Series

For your technician

N/A unless the filter reminder will not reset; then verify controller reset procedure and indoor display behavior. Page context: Della maps this display to the Econo Series line; source: Della official support: Econo (lF) R410A and R32 Series Error Codes and Troubleshooting Guide; display convention: match the letter C and letter L marker exactly before comparing neighboring codes.

Which systems show it

Econo Series

Related troubleshooting

Use the symptom guide alongside the exact display code if the unit is flashing, cycling, or showing comfort symptoms.

Related codes

Source

Next step