[an error occurred while processing this directive]
Posted by Harold hydronicnetwork.net on January 06, 2004 at 09:54:56:
In Reply to: white rogers ignition module posted by kmr on January 06, 2004 at 08:52:30:
With 120-volt systems, the black wire is usually (and should be) the "hot wire" with the 120 volts in it. The white wire is the one connected to the ground, so (should have) has no voltage higher than ground zero voltage.
The black wire would then be connected to the wire or terminal on the furnace that asks for it. the white wire goes to the wire or terminal of the furnace that asks for it (in the wiring diagram.) If they are on the wrong connections the module can misbehave. If the white wire does not truly have no voltage reading on a voltmeter to the gorund, the module can misbehave. In other words, an electriclan should be called to verify correct wiring.
This is basic wiring 101 for a technician and just the first step. Get ready for the next 1000 tidbits you need to understand the situation.