Lennox Error Code E207 indicates Hot surface ignitor sensed open. Start by checking the most common and safe items identified in the troubleshooting section. If the code returns after those checks, professional diagnosis is recommended.
Easy
Hot surface ignitor sensed open
Unknown
Ignitor resistance out of range or open circuit
Measure resistance of hot surface ignitor; replace if open or not within specified range; resumes normal operation after fault cleared
Hot surface ignitor
Call an HVAC technician if the error persists after completing the recommended basic troubleshooting steps or if the system repeatedly locks out.
Disconnect power before inspecting the equipment. Never bypass safety devices or operate the system if you suspect unsafe conditions.
Learn more about the furnace components and operating conditions commonly associated with diagnostic error codes: