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Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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Greetings, Have a Trane XL90 with 4 flashing error light

Customer Question

Greetings, Have a Trane XL90 with 4 flashing error light meaning the problem with the high limit switch.
JA: Thanks. Can you give me any more details about your issue?
Customer: couple months ago I fixed my blower motor and now I'm getting this 4 flashes representing a problem w/a high limit switch. the inducer motor turns on w/constant flashing which I can see fire in the window but then igniters go dark and then the 4 flashes
JA: OK got it. Last thing — HVAC Technicians generally expect a deposit of about $18 to help with your type of question (you only pay if satisfied). Now I'm going to take you to a page to place a secure deposit with JustAnswer. Don't worry, this chat is saved. After that, we will finish helping you.
Submitted: 1 year ago.
Category: HVAC
Expert:  Rick replied 1 year ago.

What happens when you cycle the power off then back on? is the filter clean?