How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Phil Your Own Question
Phil
Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
23932409
Type Your HVAC Question Here...
Phil is online now
A new question is answered every 9 seconds

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:  BillyHvac replied 1 year ago.

Hello,

we have a few switches that can cause this...lets start with the highest odds.

Directly below the fire box...is a bandaid sized flat plate with 2 wires attached

Expert:  BillyHvac replied 1 year ago.

let me know when you see this part

Related HVAC Questions