What It Means
- No circulation safety trip (control performed via temperature sensor).
Lennox Hydronic Heating
Lennox Hydronic Heating Error Code 125
Hydronic Heating:
Causes & actions from Lennox
How it shows
- boiler control fault display: 125
Press RESET (R) button for at least 2 seconds If this fault persists, call authorized SERVICE technician
Applicable models & manual sources
- GCWB95W-150
No circulation safety trip (control performed via temperature sensor).
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.
