Lennox Split & Multi-Split

Lennox Error Code DS2 SLOW Flash, DS1 SLOW Flash (Simultaneous)

Split & Multi-Split: Heat pump (outdoor)

What It Means

  • Normal operation

Causes & actions from Lennox

How it shows
  • defrost control ds2 ds1 led: DS2 SLOW Flash, DS1 SLOW Flash (Simultaneous) (ds1: flashing (slow), ds2: flashing (slow))

Unit operating normally or in standby mode. None required.

Applicable models & manual sources
Disclaimer: This information is for general reference. Code wording and instructions vary by model. Always follow the service manual for your exact unit.

What should you check next?

Continue in ACLogics with guided diagnosis for your equipment and symptoms.

See how guided diagnosis works →