Have HVAC Questions? Ask an HVAC Expert for Answers
Hello,My name is ***** ***** I will do my best to assist you. I am looking over your question now and will respond shortly.
M1 and M2 are unused blower wires. They just need a dummy terminal to put on. It can M1 and M2...it could be terminals labeled PARK...
Do you have park terminals? or what board do you have?
hum = humidifier
cont = continuous fan
IND = inducer
EAC = electric air cleaner
Give me model number of the board and I can tell you where they go...but these are extra wires and can just be taped off and not put on board at all.
all of those are dummy terminals just for a place to put unused wires.
What is number of board you used?
ok...so you should have terminals labeled "unused motor wires"
Yes...see previous response with this link HERE
I just showed you.
Dont you have the unused terminals I showed in picture?
Is this your board shown here
They go to terminals "unused"..just like the manual says..click the blue word below
If you still do not understand I want you to take a pic of your board..or write down for me every terminal available
Are you getting my replies?
I sent 2 pictures direct from the st9120u manual.
Just tell me ALL the terminals you have open on the board...
BUT you dont even need them...M1 and M2 are leftover wires...They only plug onto terminals for somewhere to keep them.
You can leave M1 and M2 totally unhooked from board and taped off and it is the same thing...these wires are not used.
did you cross the wires to new terminals as described in the chart I sent?
Are you still needing assistance?