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Electrical Theory & Applications for HVACR
©2012 ESCO Group
Student Worksheet
Page 123
Chapter 6: TroubleshooƟng
Name _______________________________
Date _____________________
1. When troubleshooƟng most HVAC‐R loads, a technician is most likely to find loads wired in
____________ with other loads.
A.
series
B.
parallel
C.
complex detail
D.
sequence
2. When troubleshooƟng switches, a technician will likely find them wired in ____________ to a
load.
A.
series
B.
parallel
C.
complex
D.
order
3. Power consuming devices:
A.
are always high‐voltage
B.
are low‐voltage only
C.
can be a range of voltages
D.
are mechanical moƟon only
4. A technician finds that a unit’s indoor fan is running, but the condensing unit’s fan and compres‐
sor are not running. Which of the following devices can be eliminated?
A.
thermostat
B.
transformer
C.
fuse or breaker
D.
condenser contactor
5. A technician is checking an A/C unit and finds that the indoor fan is not running, but the
condenser unit is running. The problem is in the thermostat. Which terminal should be checked
first?
A.
R
B.
Y
C.
W
D.
G
6. The load side of a switch is:
A.
the side the power side is connected to
B.
the side a power using device is connected to
C.
connected to white wire only
D.
the neutral side of the circuit