Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
10th Edition
ISBN: 9781337399128
Author: Russell E. Smith
Publisher: Cengage Learning
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Chapter 18, Problem 23RQ
To determine
The reason why the unit is heating when it is commanded to cool.
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Students have asked these similar questions
If the thermostat contacts are closed the compressor and the condenser fan motor are not operating, and all the other loads are operating properly, which might be the problem?
A. A bad high pressure safety switch.
B. A bad low pressure switch
C. Both A. and B.
D. A bad thermostat
9
Which of the following causes cooling in the room?
a.
Generator
b.
Absorbor
c.
Evaporator
d.
Condenser
If the compressor and condenser fan motor will not operate but the indoor fan motor is operating, what would be the probable cause of the malfunction?
a. Bad contactor coil
b. Bad thermostat
c. Bad condenser fan motor
d. Bad compressor
Chapter 18 Solutions
Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- True or False: The two types of defrosts used with low-temperature fixtures are hot gas and electric defrost.arrow_forwardHow is defrost accomplished when the equipment room is in the back and the medium-temperature fixtures are in the front?arrow_forwardWhen a large volume of air is needed at a diaphragm, the thermostat may feed branch line pressure to the_______.arrow_forward
- Which of the following is a gas charged accumulator? a. spring loaded accumulator b. bladder type c. all of the mentioned d. weighted accumulatorarrow_forwardIs the heat anticipator in series or parallel with the thermostatcontacts?arrow_forwardThis type of compressor is commonly used in air conditioning systems in large buildings. b) screw a) centrifugal c) hermetic How to install the bulb of the thermostatic valve to the suction pipe. b) vertical c) diagonal a) horizontalarrow_forward
- What type of chemical is used to cause a pressure change in a bellows type thermostat?arrow_forwardWhich is true of a high-pressure control? A. It closes on a rise in pressure. B. It opens on a fall in pressure. C. It is located on the evaporator. D. It protects the compressor from pressures.arrow_forwardOn most residential air conditioning units, the condensing fan motor is controlled by? a. Transformer b. High pressure safety switch c. Compressor contactor d. Indoor fan relayarrow_forward
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