What It Means
- Power problem
Lennox Split & Multi-Split
Lennox Error Code DS2 OFF, DS1 OFF
Split & Multi-Split: Heat pump (outdoor)
Causes & actions from Lennox
How it shows
- defrost control ds2 ds1 led: DS2 OFF, DS1 OFF (ds1: off, ds2: off)
- defrost control ds2 ds1 led: DS2 OFF, DS1 OFF (ds1: off, ds2: off)
No power (24V) to demand defrost control terminals R and C or demand defrost control failure. 1. Check control transformer power (24V). 2. If power is available to demand defrost control and LEDs do not light, replace demand defrost control.
Other manual wording (1 of 2)
XP19
1Check control transformer power (24V). 2If power is available to board and LED(s) do not light, replace board.
Other manual wording (2 of 2)
XP15
1Check control transformer power (24V). 2If power is available to DCB and LED(s) do not light, replace DCB.
Applicable models & manual sources
- EL16XP1
Power problem
- ML16KP2
Power problem
- ML16XP1
Power problem
- XP19
Power problem
- XP19
Power problem
- XP15
Power problem
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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