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Author Question: List the four phases of a planned maintenance service call. What will be an ideal ... (Read 68 times)

fahad

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on: Jul 26, 2018
List the four phases of a planned maintenance service call.
 
  What will be an ideal response?

Question 2

How can a two stage heat pump be controlled by only four wires?
 
  What will be an ideal response?


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blfontai

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Reply #1 on: Jul 26, 2018
Answer to Question 1

Routine maintenance, pre-start inspection, operational checks, troubleshooting

Answer to Question 2

Communicating controls can send commands and information over the same network, allowing complex control with just a few wires.


fahad

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Reply 2 on: Jul 26, 2018
Wow, this really help

steff9894

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Reply 3 on: Yesterday
Excellent

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