EcoSmart ECO-21 Installation Instructions Manual page 21

configured (Die electric voltage test).
SPECIFICATIONS LEVEL TEST
Each unit is temporarily attached to a testing station that duplicates the conditions present in a typical
residential installation. The unit is turned on and the temperature of the water produced by the unit is
measured at several flow rates to insure that the proper temperature rise specifications are met and
that the unit self-regulates with the varying flow rates.
The following table represents some of the most common technical support questions we receive.
Before calling us, please read thoroughly to see if your question or problem is addressed.
PROBLEM
Water heater is not heating at all (water is flowing but
the unit is not heating at all - the incoming water
temperature is the same as my cold water supply) -
the digital display does NOT light up.
Water heater is not heating at all (water is flowing but
the unit is not heating at all - the incoming water
temperature is the same as my cold water supply). The
digital display DOES light up.
Water heater is heating but the water temperature is
not hot enough.
The water temperature at my faucet is less than the
temperature setting of my water heater.
POSSIBLE CAUSE
No power or incorrect wiring.
Flow rate is too low / water pressure is too low.
Internal part failure.
User temperature setting too low.
Flow rate is too high.
Crossed wires.
Voltage less that 240 volts.
Mixing too much cold water.
Voltage less that 240 volts.
Anti-Scald pressure/balancing valve or tempering
SOLUTION
Make sure the breakers at main electrical panel are
ON. You may have a faulty breaker or the unit may be
wired incorrectly.
Your water heater has an activation flow rate of
approximately 0.25 GPM. If your water flow rate is less
than this level, your unit will not activate. Increase the
flow rate.
Please call us for technical assistance.
Turn up the temperature setting on the unit. (see
General Operating Instructions section of this manual)
Depending on your incoming water temperature and
the power output of your model, your water flow rate
may exceed the physical heating capacity of your
water heater. Reduce the flow rate at the faucet or
slightly close the shut-off valve installed on the inlet
side of your heater to reduce the inlet water flow rate.
(see General Operating Instructions section of this
manual)
If it's a new installation, have your electrician double
check the wiring. Is possible that the wiring is
incorrect.
The heating elements on your water heater are
designed for 240 volts. When use with a lower voltage,
they produce less heating power. You may need to
upgrade to a larger model. Call your authorized dealer
for more information.
You do not need to mix as much cold water with your
tankless water heater compared to when you use a
conventional water heater. You may also have an anti-
scald feature on your faucet that is mixing cold water.
These types of faucets can usually be adjusted to
reduce the amount of cold water mixed. (see General
Operating Instructions section of this manual)
The computer chips in your tankless water heater are
programmed with the expectation that your incoming
line voltage is 240 volts. If you have less than 240
volts, it may affect the reading on your water heater's
digital display and cause it to read slightly higher than
the actual output temperature. To compensate for
this, increase the setting on your water heater if you
need / want hotter water.
Your faucet may have an anti-scald feature or a
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