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, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
Type Your HVAC Question Here...
Phil is online now
A new question is answered every 9 seconds

Tried installing nest. Did not work rewired old unit back in

Customer Question

Tried installing nest. Did not work rewired old unit back in and now nothing works. I took a pic of wire before I started.
JA: Did you double-check the thermostat? And what about the unit's filters?
Customer: It won't power up.
JA: Do you plan on doing the work yourself?
Customer: Tried. But nest did not work was on tech support for 40 mins. They told me to wire back old unit. I did and it did not power up either
JA: Anything else we should know to help you best?
Customer: It a honeywell
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the HVAC Technician about your situation and then connect you two.
Customer: With a jumper in rc and r
Submitted: 1 year ago.
Category: HVAC
Expert:  Phil replied 1 year ago.

Hello, you probably blew the 5 amp automotive type fuse in the printed circuit board when you wired the Nest into place. The printed circuit board is usually mounted on the blower, you access it by removing the blower door.

I will be in for another half hour tonight, if I miss your response, I will pick it up first thing in the morning.

Related HVAC Questions