What It Means
- Ambient sensor problem
Lennox Split & Multi-Split
Lennox Error Code DS2 SIMULTANEOUS FAST FLASH, DS1 SIMULTANEOUS FAST FLASH
Split & Multi-Split:
Causes & actions from Lennox
How it shows
- defrost control ds2 ds1 led: DS2 SIMULTANEOUS FAST FLASH, DS1 SIMULTANEOUS FAST FLASH (ds1: flashing (fast), ds2: flashing (fast))
Ambient sensor problem: Sensor being detected open or shorted or out of temperature range. DCB will revert to time/temperature defrost operation. (System will still heat or cool).
Applicable models & manual sources
- XP15
Ambient sensor problem
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.
