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: 5648
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

Tuned off my comfort aire mini split unit this morning now

Customer Question

Tuned off my comfort aire mini split unit this morning now it will not turn back on also have a operation indicator light flashing
Submitted: 4 months ago.
Category: HVAC
Expert:  WCohn replied 4 months ago.

Hello, my name is ***** ***** I look forward to helping you!

Expert:  WCohn replied 4 months ago.

Please give me a few moments to look into your issue

Expert:  WCohn replied 4 months ago.

No error codes? Just flashing indicator light?

Expert:  WCohn replied 4 months ago.

It looks like there was a communication error. Lets turn it off and kill the power to the unit. Wait 10 seconds and return power and turn it on

Customer: replied 4 months ago.
Just a flashing light l have replaced the fuses @ tuned power off the power stayed off for 30 minstrel to one hour while I drove about 30miles to get the fuses
Expert:  WCohn replied 4 months ago.

What is the model#?

Expert:  WCohn replied 4 months ago.

Were the fusses blown?

Customer: replied 4 months ago.
Model #D-SMA18SC didn't check the fuses but had the same problem after I replaced them
Expert:  WCohn replied 4 months ago.

While I continue research can you check old fuses? Wanting to know if we had a surge

Customer: replied 4 months ago.
Well let can't find my Fluck to check them
Expert:  WCohn replied 4 months ago.

Is it flashing once a second?

Customer: replied 4 months ago.
Expert:  WCohn replied 4 months ago.

Lower the thermostat as far as it will go

Customer: replied 4 months ago.
Done
Expert:  WCohn replied 4 months ago.

Wait a few minutes then check the outdoor unit. See if its on or has an error code

Customer: replied 4 months ago.
It's not on & the manual doesn't say anything about error code just the flashing light and also the unit has been off all day
Expert:  WCohn replied 4 months ago.

The Operation light will flash every second until "cool" is on. It seems like it isn't getting the proper signal from the stat

Customer: replied 4 months ago.
what does that mean ( until cool is on) signal from stat I don't understand
Expert:  WCohn replied 4 months ago.

This is from the owner's manual

Customer: replied 4 months ago.
I am a owner what does that mean��
Expert:  WCohn replied 4 months ago.

Sorry, It should flash UNTIL the air conditioner is ON, then the light stays on solid. So if you turned the temp down then the unit is not getting the signal. You may have a bad PCB

Customer: replied 4 months ago.
What is a PBC
Expert:  WCohn replied 4 months ago.

PCB Printed Circuit Board

Customer: replied 4 months ago.
Can any HVAC tech chek that out and fix and if so about what kind of price am I looking at for the board
Expert:  WCohn replied 4 months ago.

I'm not sure that board is still available. You'd have to call a supplier on Monday. Yes the should be able to test it. I hope I'm wrong. Not being there makes it hard for me to truly diagnose

Expert:  WCohn replied 4 months ago.

I've done all I can. If you feel I have served you well please give me a 5 star rating.

Expert:  WCohn replied 4 months ago.

Do you have any other questions?