View Full Version : Nordyne IQ Drive comm failure
08-11-2010, 11:21 AM
I have installed a new Nordyne IQ Drive 4 ton system, upon startup the IQ Contoller reads OD unit comm failure and blower comm failure. Communication wire traces out good. Is this a possible board failure?
08-12-2010, 01:30 AM
Did you use shielded wire for the communication wires?
08-12-2010, 01:45 AM
Did you call the Nordyne support line?
08-12-2010, 07:48 AM
I did use sheilded wire, didnt want to take any chances. I havent called the support line yet, i wanted to get a little feedback first. I guess that is the next step.
08-12-2010, 08:03 AM
Did you ground one end of the shielding on the wire?
08-12-2010, 08:06 AM
Yes, the drain wires were all grounded in the air handler.
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