In communicating systems, fault history, system run time, system status, and other helpful service information are normally:

A) Available at the LCD screens on the side of the equipment.
B) Always shown on the main thermostat display.
C) Available through the service screens of the communicating thermostat.
D) Available on the manufacturer's website for each installed system.


C

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The torque converter clutch circuit is controlled by the ________.

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Spark ignition is important for roof top or package units located outdoors because of ____________________ problems.

Fill in the blank(s) with the appropriate word(s).

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Which of the following is not a consideration when determining which type of copper cable to use for a project?

A) Will the cable be placed inside or outside? B) How far does the signal have to travel? C) Will the copper wire be used to carry voice frequencies only? D) Are there strong electromagnetic influences in the area?

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The output of a 7912 regulator is

A) +12 volt B) +1.2 volt C) -12 volt D) -1.2 volt

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