What It Means
- 5-minute anti-short cycle delay
Lennox Split & Multi-Split
Lennox Error Code DS2 SLOW Flash, DS1 SLOW Flash (Alternating)
Split & Multi-Split: Heat pump (outdoor)
Causes & actions from Lennox
How it shows
- defrost control ds2 ds1 led: DS2 SLOW Flash, DS1 SLOW Flash (Alternating) (ds1: flashing (slow), ds2: flashing (slow))
Initial power up, safety trip, end of room thermostat demand. None required (jumper TEST pins to override)
Applicable models & manual sources
- ML16KP2
5-minute anti-short cycle delay
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?
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