Lennox Equipment not specified

Lennox Error Code 344

Equipment not specified:

What It Means

  • GF IFC Relay Y1 Stuck

Causes & actions from Lennox

How it shows
  • iComfort S30 alert: 344

Priority condition: Service Urgent Link Relay Problem. Issue could be with possible Y1 relay failure. NOTE: Relay is located on the IFC (Integrated Furnace Control). If issue continues replace IFC.

Applicable models & manual sources
Disclaimer: This information is for general reference. Code wording and instructions vary by model. Always follow the service manual for your exact unit.

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