What It Means
- Gas leak detected
Lennox Split & Multi-Split
Lennox Split & Multi-Split Error Code E554
Split & Multi-Split: Mini-split unit (outdoor)
Causes & actions from Lennox
How it shows
- mini outdoor inverter pcb: E554
- Mini-split outdoor main board: E554
Check the refrigerant
Applicable models & manual sources
- 3WPD036S6S-1P
Gas leak detected
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.
