Part $7$:

$54.$ The electronic display on an Energy Saver electric water heater can display various error codes for easier

$55.$ The most common cause for an E$04$ error code on an Energy Saver electric water heater is a failed $q,$ element.

$56.$ A stucl $q,$ is a common cause for an E$05$ error code on an Energy Saver electric water heater

$57.$ "Insufficient hot water" on an Energy Saver electric water heater is commonly caused by having the $$ set too low.

Part $8$:

$58.$ The condenser on a heat pump turns vaporized refrigerant into a $$

$59.$ The temperature range across the evaporator coil of a heat pump should be $-F$

$60.$ Heat pump water heaters heat water $$ than an electric water heater.

$61.$ Before the heat pump can operate, the average tank temperature must be above $F$ and the air temperature must be between $F$ and $F.$

$62.$ On a heat pump, HPO means either the water temp or air is out of $q,$ for the heat pump to work so the $q,$ are working only.

$63.$ A heat pump water heater $q,$ the air around it and removes $$

$64.$ The minimum size room a heat pump water heater can be installed in without ducting is

$$ cubic feet.

$65.$ ECC on a heat pump means the $$ is not running when it should be

$66.$ The power requirement for the HPWH are $$ or $$ Volts.

$67.$ Would an $8$ foot by $8$ foot room with a $10$ foot ceiling be adequate for a heat pump?

Part $9$:

$68.$ For a customer complaint of $"$No hot water," the first thing you should check is if the is $$

$69.$ The primary function of the thermal cut$-$off switch located on the inner door is to shut down the water heater before it can produce unsafe levels of

$70.$ A proper gas water heater draft test is taken with doors and windows $$ and exhaust fans $$

$71.$ A long handled soft bristle $$ is recommended to clean the flame arrestor.

$72.$ A dirty LDO screen can cause the door switch to $$

$73.$ If the pilot goes out as soon as the pilot knob is released, check for a bad $$ or a

$q,$ door switch.