EZ DELUXE Operation & Installation Manual - 6.0 Troubleshooting
Q1. WHEN THE HOT WATER TAP IS OPENED, AND THE EZ DELUXE IS NOT RESPONDING.
A. If you are running water through the system, but do not see a showerhead image on the display, the heater is
failing to sense the water flow. This will require one of the following to resolve the issue:
1. Flush the unit. Flushing the unit with Distilled White Vinegar will help to clean the magnetic turbine
located inside of the flow sensor housing.
2. Disassemble and clean the flow sensor housing by hand. Please call our tech support department for
access to our tech support videos (Note: Tech support videos are intended for advanced technicians
only).
3. Replace the flow sensor housing. If after cleaning the flow sensor housing by hand the system still fails
to sense water flow, the flow sensor housing may need to be replaced.
Q2. THE DISPLAY SHOWS AN ‘E0’ ERROR CODE WHEN TRYING TO IGNITE.
A. This is an error on the inlet water temperature probe. We recommend trying to clean it before replacing it.
It is located on the flow sensor housing located on the bottom right of the unit where the water first enters. It
will have a set of two black wires coming off of it and held in by one or two screws. Turn the water off to the
unit then remove the two screws holding the temperature probe in place. Once removed, clean the probe with
white vinegar and reinstall it. If the unit continues to show an E0 after cleaning the probe then it will need to be
replaced.
Q3. THE DISPLAY SHOWS AN ‘E1’ ERROR CODE WHEN TRYING TO IGNITE.
A. Does the unit show an ‘E1’ error code every time the unit tries to ignite or sporadically?
1. Should the unit be showing the ‘E1’ error code only occasionally, we recommend flushing the system
with distilled white vinegar.
2. Should the unit be showing ‘E1’ every single time it tries to fire:
A. Check to make sure that only EZ Tankless vent is being used. Be sure that the vent is installed
in a horizontal manner, through an exterior wall and vented outdoors. Check that there is
nothing blocking the proper flow of air through the intake or exhaust.
B. After verifying proper flow of air through the vent system, remove the front cover of the unit
(Be careful as the display should remain attached for this test.) Once the front cover is
removed, while viewing into the combustion chamber windows, open a water source to allow
the heater to try to fire. If the unit fires on the right side of the burners, but only the right side
before going to the ‘E1’ error code, your unit will need a motherboard replacement.
3. If your unit is showing ‘E1’ error code and the above steps have been taken to address the issue without
resolution, please call EZ Tankless Tech Support for further assistance.
Q4. THE DISPLAY SHOWS AN ‘E2’ ERROR CODE WHEN TRYING TO IGNITE.
A. Please call EZ Tankless support for assistance.
6.0 TROUBLESHOOTING
PAGE 11.
EZ TANKLESS DELUXE OPERATION + INSTALLATION MANUAL