What It Means
- GF High Pressure Switch Stuck Closed
Lennox Equipment not specified
Lennox Equipment not specified Error Code 226
Equipment not specified:
Causes & actions from Lennox
How it shows
- iComfort S30 alert: 226
Priority condition: Service Urgent The furnace high pressure switch will not open. • Check operation of high pressure switch closing during a heat call. • Measure operating pressure (inches w.c.). • Inspect vent for blockage and combustion air inducer for correct operation and restriction. • Check for moisture in pressure switch. NOTE: Check Service Manual and Service and Application Note H-13-07 “Condensing Furnace Pressure Switch Troubleshooting” for additional information.
Applicable models & manual sources
- iComfort S30
GF High Pressure Switch Stuck Closed
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.
