Fault Code Lookup

HVAC Sales Master
E110
Low line voltage
This code typically points to
  • Supply below nameplate voltage

Next checks to confirm
  1. Measure incoming line voltage
  2. Correct low-supply condition

Escalation
Normal operation resumes once voltage returns
Reset behavior
Clears 5 seconds after recovery.
Service Soon
Schedule repair
Source
Lennox unit information doc 100027, p.10