Hi again everyone
I have been trying to communicate with my 818P controller which was
delivred to me long ago with the Ken Heine furnace.
But apparently I cannot communicate with it. Not a single byte comes back
from it.
I have ckecked all the wiring, and even sent octets directly from the
serial port with LEDs flashing at the rear of the control unit when a byte
goes through. Messages get into the controller unit but it never answers.
My most logical guess at this point is that the communication board is dead.
Any idea where I could get a comm. card for the 818P given it is an old
model ? Maybe I'd be better bying a new control unit.
Any advice anyone ?
Cheers
Nick
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