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Simplex 4010 with n.a.c. extender in a three story dormitory horns and strobes work on first and third floors only strobes work on second floor. Field wiring works fine when a 24v.d.c. external power supply is applied to the horns they operate fine. Fuses in n.a.c. extender panel check good and no trouble lights illuninated in n.a.c. panel. any suggestions appreciated . ibquiet

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You have to chech the output voltage in thn.a.c. extender while making an alarm

Posted on Jun 26, 2009

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I need some additional information.

Is it an adressable 4009 signal extender wired up to trip with idnet or is it hardwire trip. A part # on the 4009 would be good. The repair might require you to check programming.

Posted on Oct 28, 2008

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Is horn circuit folding back "Overloaded"

Posted on Mar 05, 2008

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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