What It Means
- Discharge Line Temperature Fault
Lennox Split & Multi-Split
Lennox Error Code DS2 SLOW Flash, DS1 ON
Split & Multi-Split:
Causes & actions from Lennox
How it shows
- defrost control ds2 ds1 led: DS2 SLOW Flash, DS1 ON (ds1: on, ds2: flashing (slow))
Discharge Line Temperature Fault. This code detects shorted sensor or high discharge temperatures. If the discharge line temperature exceeds a temperature of 300ºF (148ºC) during compressor operation, the board will de-energize the compressor contactor output (and the defrost output if active). The compressor will remain off until the discharge temperature has dropped below 225ºF (107ºC). Each fault adds 1 strike to that code's counter; 5 strikes per code = LOCKOUT.
Applicable models & manual sources
- XP19
Discharge Line Temperature Fault
- XP19
Discharge Line Temperature Fault
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.
