Lennox Split & Multi-Split

Lennox Error Code Simultaneous SLOW Flash

Split & Multi-Split:

What It Means

  • Normal operation

Causes & actions from Lennox

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

None required.

Other manual wording

EL16XP1, ML16XP1

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.

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