Electrical
I am checking low voltage communication from thermostat to control board. I check from R terminal to Y terminal on the control board. I read 0 Volts AC. What have I proved to myself?
Call for outdoor unit
This part stores voltage then disperses it. It is a form of Resistance.
Capacitor
normal to low- head
normal to High- subcool
Low- Suction
High- superheat
Liquid line restriction
Used to switch unit from heating to cooling
What animal did the CIA surgically implant listening equipment and released them around sensitive Soviet locations during the Cold War?
Cats
I make a call for cooling. The blower fan runs but the outdoor unit has not come on. I check Y terminal to C terminal and read 24 volts AC on the defrost board. Then check common to Y wire on contactor and read 0 volts AC. What should I check next?
Safety switches.... Low pressure switch, High pressure switch, compressor overload.
This is a Relay and is like a bridge for the voltage to go across.
Contactor
Low- head
Low- subcool
Low- Suction
High- superheat
has a fixed orifice piston
Low charge on system
turns vapor refrigerant to liquid refrigerant.
Condenser
Who was offered the Israelian presidency in 1952?
Albert Einstein
I noticed a humming noise from the outdoor unit. The contactor is closed and voltage is present on both high voltage and low voltage. What part should I check first?
The Capacitor
An thing that makes electricity useful.
The Load
Head and Suction pressures equal
System not running
name the four lines of the ac cycle
discharge, liquid, expansion, suction
What animal is Illegal in Hawaii?
Hamsters
must answer both questions
The Capacitor is a dual capacitor that must be
50µf + 7.5µf ± 10 % You read 46µf + 6.8µf
Is this capacitor in tolerance or not? and what is my range for both?
45µf - 55µf + 6.75µf - 8.25µf
and
Yes it is in tolerance
Controls the system, Is considered the brain of the system.
high- head
high- subcool
high- suction
low- superheat
fixed orifice piston
Over charged system
name the five type of compressors
Screw, Scroll, Reciprocating, Rotary, Centrifugal
When Babe Ruth retired, what was the MLB's career home run record?
714
List what Terminal controls what part of system
Y Terminal
W Terminal
G Terminal
W Terminal is for Heat (gas or electric)
G Terminal is for the blower motor (indoor fan)
Usually closed and is wired in series with important parts. This is a category not a specific part.
Safety Switches
normal-head
normal- subcool
low- suction
high- superheat
lack of air and or not enough heat transfer
What does a TXV do?
maintain superheat
Who received a patent for a gas-powered central heating system that used ducts to deliver heat throughout a home, significantly advancing residential comfort?
Alice H. Parker in 1919