TR
OUBLE
SHOO
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Residen al Hybrid Electric Heat Pump Water Heater Use and Care Guide
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27
Undersized water heater.
If your
water heater runs out of hot water too
quickly, it may be too small for your
needs. If the water heater is old, con-
sider replacing it with a larger model. If
the water heater is in good condi on,
you may be able to meet your fami-
lies hot water needs with the exis ng
water heater by installing Thermosta c
Mixing Valves at each point-of-use
and then se ng the temperature to a
higher se ng on the UIM. See “Step
12:”.
You can also reduce your homes hot
water needs by washing clothes in cold
water, installing
fl
ow restrictors on
shower heads, repairing leaky faucets,
and taking other conserva ve steps.
Reversed connec ons or melted J-
tube.
Check the hot and cold connec-
ons and make sure your homes hot
water pipe is connected to the hot wa-
ter outlet on the water heater. Usually
reversed connec ons are found soon
a er the installa on of a new unit. If
copper pipes were soldered while they
were a ached to the water heater, the
J-tube may have melted. The J-tube is
a curved plas c tube inside the tank
a ached to the cold water inlet. If the
J-tube has melted, it can be replaced
by removing the old J-tube and install-
ing a new one.
Plumbing leak.
Even a small leak in the
hot water side of the homes plumbing
system can make it appear that the
water heater is producing li le or no
hot water. Locate and repair the leak.
Lower hea ng element not working.
If
the lower hea ng element is not work-
ing, you will have some hot water but
not as much as before. Because the
lower element does most of the work,
it usually wears out before the upper
element. Replace the lower element if
necessary (see page 29).
TROUBLESHOOTING
