What It Means
- No Earth ground (control will restart if error recovers).
Lennox Ducted Heating
Lennox Error Code 5 + 3
Ducted Heating:
Causes & actions from Lennox
How it shows
- ignition control red led: 5 + 3
This manual entry does not list further causes or actions.
Applicable models & manual sources
- G60UHV(X)
No Earth ground (control will restart if error recovers).
- G61MPV
No Earth ground (control will restart if error recovers).
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.
