What It Means
- Ignition failure (5 attempts).
Lennox Hydronic Heating
Lennox Error Code 133
Hydronic Heating:
Causes & actions from Lennox
How it shows
- boiler control fault display: 133
Press RESET (R) button for at least 2 seconds If this fault persists, call authorized SERVICE technician
Applicable models & manual sources
- GCWB95W-150
Ignition failure (5 attempts).
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.
