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 Dales-Electronic Your Own Question
Dales-Electronic, HVAC Technician
Category: HVAC
Satisfied Customers: 1466
Experience:  I am a Home Appliance / Refrigeration Technician of 25yrs+ with my own business and for multi-brand national companies.
Type Your HVAC Question Here...
Dales-Electronic is online now

Hi I'm joe I've replaced the PCB in my Maxima 35 S but its

This answer was rated:

Hi I'm joe I've replaced the PCB in my Maxima 35 S but its stuck in test mode using + and - buttons doesn't take it out of test mode
Dales-Electronic :

Hi Joe ~ I assume that you have carried out the holding in of the +- buttons for 3 seconds and then released them and done it again? If so have you carried out a reset? ~ Ian

JACUSTOMER-6nzvtz3o- :


Dales-Electronic and other HVAC Specialists are ready to help you
OK well as you are aware even if this doesn't work the board cancels the test mode after 15 minutes anyway, if this is not happening I would suggest that You have a faulty board ~ send it back and get it replaced. What was the original fault?
Customer: replied 3 years ago.

The original PCB was stuck in summer mode, the button mounted in the PCB to take it out of summer mode was faulty

If it were me I would do it this way if you can, take out the board again and check that all the wiring connections are sound and then with the board still out and making sure it cannot short out anywhere press the small microswitches that equate to +- see if you can cancel test mode with the board out. If you can then you have a further problems with the buttons, if you cant then its the pcb ~ remember you are working with voltages in part that can bite ~ Ian
How are you getting on with the fault finding, do you require further help? If not would you kindly rate my service using the smiley faces below ~ thank you ~ Ian