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The most commonly encountered problem with systems which use the existing house wiring to transmit signals is the signals are received by some Receiver modules, but not by others. For example, the Controller controls some lights but not others or controls some lights intermittently. This can happen sometimes when the Module to be controlled is on the opposite phase of the house wiring to the phase which the Controller is connected to.
Here’s a simple test: Turn on any 220V appliance, i.e.; dryer, range, air conditioner, etc., OR try plugging the problem x-10 device and controller into outlets on the same circuit breaker. If they now work, your problem is caused by the device and controller being on two different phase circuits in your house wiring
Phase problems in household wiring are caused by two different power currents running from the electrical breaker box. (See figure 1). It is, therefore, suggested that the Controller and all Modules to be controlled by that Controller be on the same phase. This can be accomplished by reviewing your breaker panel (see figure 1 - "N" is X10 units on "B" phase) Where it is not possible, the problem can be solved by installing a PHASE COUPLER (also known as a signal bridge) across the two phases of the house wiring to couple the signal from one phase to the other.
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