What It Means
- Loss of flame.
Lennox Hydronic Heating
Lennox Hydronic Heating Error Code 128
Hydronic Heating:
Causes & actions from Lennox
How it shows
- boiler control fault display: 128
Press RESET (R) button for at least 2 seconds If this fault persists, call authorized SERVICE technician
Applicable models & manual sources
- GCWB95W-150
Loss of flame.
GCWB95W-150, GCWB95W-205, GCWB95F-150
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.
