New Furnace Electrical Noise Problem

MLD · 2005-03-10T22:30:51+00:00

Have a new High Efficiency Trane Gas Furnace. Every time it fires up thepicture on a TV set (rabbit ears antenna) on the floor right above it goeshaywire. The picture becomes almost unwatchable because of all the noisestreaks and snow in it. The source of the problem is the Vent Blower(Inducer motor)--the electrical noise is only present when it runs.So far, following Trane's service Tech instructions, the HVAC Co techs havedone the following:1. Checked to make sure that there is a good ground between the furnace andthe earth ground.2. Replace the wiring harness to the vent blower with a shieldedharness--Trane may call it a shielded harness but the shielding ends about 6inches from the motor. So there is 6 inches of unshielded wiring which to meis like not having any shielding at all.3. Replaced the control board.Why they haven't suggested replacing the Vent Blower is a mystery to me.However, while there has been quite a bit of improvement the TV noiseproblem still exists. Now waiting on the results of a discussion betweenHVAC Trane.I've been told that I'm not the only one that has experienced this problem.Has anyone else seen something like this?MLD