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TROUBLE SHOOTING
If you are having any problems getting your unit to work after going through the check list,
please call our technical support team for any help.
TOLL FREE 1-888-270-8452
You can also email us at:
Problem
Possible Cause
Solution
E3 Error Code
The water flow is too
restricted. This causes
overheating on the unit.
Allow time to cool down,
Increase water flow, or
reduce power.
B1 or E1 Error Code
Temperature sensor problem Contact support for part
replacement
E5 Error Code
Electric current leakage
Contact support
Water heater is not heating at
all (water is flowing but the
unit is not heating - the
outgoing water temperature
is the same as the cold water
supply) or the digital display
does NOT light up.
No power or incorrect wiring.
Make sure the breakers at
main electrical panel are ON.
You may have a faulty
breaker or unit may be
wired incorrectly.
Flow sensor is not activating
Open up the system and
check to see if anything is
stuck in the flow sensor.
Verify screen is clean.
Contact support.
Water heater is heating, but
the water temperature is not
hot enough.
Flow rate is too high.
Adjust the water valve to
decrease the water flow.
This should increase the
temperature.
The unit is under sized for
the application
Check map sizing guide to
confirm if the correct unit is
installed