Residenal Hybrid Electric Heat Pump Water Heater Use and Care Guide • 23
TROUBLESHOOTING
5
Reset Button
1 3
FIgure 30 - Energy Cut O (ECO) buon
The Energy Cut O (ECO) shuts o
power to the water heater’s elements
if the temperature of the water in the
tank gets too hot. If the ECO has tripped,
you’ll have no hot water. A tripped ECO
can usually be reset, but you should
have a qualied person invesgate the
cause of the overheang and repair the
problem. Do not turn the power back on
unl the cause of the overheang has
been idened and repaired.
• Turn off the power to the water
heater.
-
• Press the red ECO reset button (see
photo above).
• The ECO was tripped if you hear a
click when it is reset. In most cases
a tripped ECO indicates that the
tank overheated due to a problem
with one of the elements. Have a
qualified person check the upper and
lower elements and replace if neces-
sary.
• The ECO was not tripped if you didn’t
hear a click. In that case it should be
checked by a qualified person.
• Replace the insulation and the upper
access panel.
• Turn the power back on to the water
heater.
A small amount of water dripping from
the Temperature and Pressure (T&P)
Relief Valve usually means the home’s
water pressure is too high or you need a
properly sized and pressurized Thermal
Expansion Tank. Refer to Step 1 in the
Installaon secon of this manual for
more informaon. A large amount of hot
water coming from the T&P discharge
pipe may be due to the tank overheat-
ing.
-
High water
pressure can cause the T&P Relief Valve
to drip. Install a Pressure Reducing Valve
(PRV) on the main cold water supply
line. Adjust the PRV to less than 80
psi/550 kpa.
Install a
Thermal Expansion Tank. If a Thermal
Expansion Tank is already installed and
the T&P Relief Valve discharge pipe
drips, the Thermal Expansion Tank may
be pressurized to the wrong pressure or
the internal bladder may be defecve.
Refer to the instrucons that came with
the Thermal Expansion Tank for more
informaon.
In rare cases, debris can sck in-
side the T&P Relief Valve prevenng the
valve from seang fully. In that case, the
T&P Relief Valve discharge pipe will drip.
You may be able to clear debris from the
T&P Relief Valve by manually operang
the valve, allowing small quanes of
water to ush out the debris. See the
label on the T&P Relief Valve for instruc-
ons.
If the water pressure is less than 80
psi/550kpa, a Thermal Expansion Tank is
installed and properly pressurized, the
valve has been cleared of any debris,
and it sll drips, the valve may be bro-
ken—have a qualied person replace
the T&P relief valve.
Harmless bacteria normally present in
tap water can mulply in water heat-
ers and give o a “roen egg” smell. A
higher tank temperature seng of 140°
kills the bacteria that causes “smelly
water” and can reduce the levels of
bacteria that cause water-borne disease.
A properly adjusted Thermostac Mixing
Valve should be installed. In some cases,
the standard anode rod that came with
your water heater can be replaced with
a special zinc anode rod which may help
reduce or eliminate the odour. Contact a
qualied person.
To protect the tank, an anode rod
must be installed in the water heater at
all mes or the warranty is void.
In cases there the “roen egg” small is
pronounced, you can maintain the tank
temperature at 140°F/60°C in order to
reduce bacteria growth in the tank.
TROUBLESHOOTING
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