CodeRegistry
Brands
  1. Home
  2. Lennox
  3. EL18KSLV Series Outdoor Units
  4. 9
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.

9

Error 9 — Outdoor fan motor abnormal

Lennox · EL18KSLV Series Outdoor Units

What does 9 mean?

The outdoor fan motor is not running or is experiencing an issue. This fault is detected quickly by the control board.

Common Causes

  • Outdoor fan motor is blocked
  • Outdoor fan motor is damaged
  • Outdoor fan motor is not connected
  • Related circuit is broken

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Ensure the outdoor fan motor is not obstructed.

  2. 2

    Check the electrical connection to the fan motor.

  3. 3

    Test the fan motor for proper operation.

  4. 4

    If the motor is faulty, replace it.

Browse all codes in this manual (43)
Verified technical data. Last updated: April 2026

Related Faults

1Error 1 — EEPROM malfunction or damage10Error 10 — Outdoor defrost sensor failure11Error 11 — Suction temperature sensor failure
Source: Lennox EL18KSLV Series Outdoor Units
Open Manual (Page 70)Search more codes in this manual