IDA-101 End of unit 18

Front

What is the most common switch used in air-conditioning control systems?

Back

thermostat

Front

The _______ is the most important load in a refrigeration system.

Back

compressor

Front

Why is it important for a service technician to be able to use volt-ohm meters?

Back

To measure electrical resistance and voltage accurately

Front

A pictorial or a component arrangement diagram shows.

Back

all of the choices are correct

Front

Which of the following could be problems if the compressor will not start? blown fuse, contactor, thermostat, all of the problems could keep the compressor from starting

Back

all of the problems could keep the compressor from starting

Front

Which of the following could be the problem if the compressor will not run but the condenser fan motor will operate?
bad run capacitor,
bad condenser fan motor capacitor,
bad contactor,
none of the choices are correct

Back

bad run capacitor

Front

What would be the remedy for the problem described in question 6?

Back

replace compressor running capacitor

Front

Which of the following could be the cause of the compressor cycling on overload on heating? Use figure 18.7: bad contactor coil, defective outdoor thermostat, damaged reversing valve, none of the choices are correct

Back

damaged reversing valve

Front

Which of the following could be a reason for the compressor not to run? Use figure 18.7: loose electrical connections, compressor internal overload open, locked-down compressor, all of the reasons could prevent the compressor from operating

Back

all of the reasons could prevent the compressor from operating

Front

What could be the problem if the pilot does not stop when the pilot lights? Use figure 18.8

Back

pilot not covering electrode