Have HVAC Questions? Ask an HVAC Expert for Answers
Hello and thanks for using this service, if you have been waiting do not worry or get upset I am just one of the techs on here and I try to get to as many customers as I can and I just picked up your question now. Please give me time to respond as typing, researching and adding links takes me time to do so please be patient and often I will ask you questions to narrow down the issue to get is diagnosed correctly.
Was there a reason you did not get a drop in replacement?
The M1 and M2 are parking spots for unused blower wires. They may say PARK...but basically they are dummy terminals just to put unused blower wires on
so you will have a wire for heat blower and cool blower...any speeds leftover and not used are just put on m1. m2, park etc for convenience to store
the boards are interchngeable and both will show when googling.
By your HEAT, COOL Terminals do you have terminals labeled park? and the new controller is the 9160 or the HQ?
I am sorry another person has kind of jumped in here and they do not appear to have the correct answer for you, if you would like to continue with me just let me know HVAC GURU instead of Billy to get the correct answer instead of wasting time.
I originally responded to you but often some of the techs on here confuse things for the customers, if you want to deal with him or me just let me know
The terminals are labeled as unused
M1 and M2...Unused...Park....are all the same....so use UNUSED, M1, M2 as the same
You should ask Billy for a diagram of this to show you as often he jumps in and it is incorrect.
I am sorry he has locked me out of the question for awhile, since he seems to have mucked this all up I will let him respond to you, if he does not get you anywhere I will post back...I am sorry for this trouble.
Thank you for waiting while locked.
On page 3 HERE
it tells what terminals cross over to others.
Wires that were on UNUSED go on M1 and M2
Wires that were on M1 and M2 go to UNUSED
I also have the diagram for your furnace if your concerned with other wires
Black wire is commonly on COOL
Red wire is commonly on HEAT
Other color wires like yellow, blue, orange...go on M1 and M2 or unused
White goes to neutral
If you are still not sure about the issue you can always request a refund as this may not have been the best experience for you on the site, my apologies again.