Lennox Split & Multi-Split

Lennox Error Code DS2 Fast Flash, DS1 OFF

Split & Multi-Split:

What It Means

  • Discharge Sensor Discharge Sensor Lockout

Causes & actions from Lennox

How it shows
  • defrost control ds2 ds1 led: DS2 Fast Flash, DS1 OFF (ds1: off, ds2: flashing (fast))

Discharge Sensor Discharge Sensor Lockout. After 5 faults, the board will lockout.

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.

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