ERROR CODE
ERROR CODE DESCRIPTION
CONFIRMATION & SOLUTIONS
01
10 / 11 / 12
50 / 51
60
80
13
30 / 31 / 32 / 40
9.0 ERROR CODES
Error codes will be displayed in the temperature read-out if there is a malfunction. Call EZ Tankless if you have
any questions (765)885-5125
Inlet Temp Probe Malfunction
False Fire / Ignition Error /
Accidental Flameout
Limit Switch Error
Flue or Fan Failure
High Temperature Protection
Outlet Temperature Probe Malfunction
Timing Protection
Inlet temperature has either failed or is dirty.
You may try cleaning the probe with white
vinegar. If that does not work it will need to
be replaced.
Lack of Gas. The gas valve has either been
turned off or the unit isn’t receiving accurate
gas pressure. It can also be caused by loose or
corroded wires. Remove cover to ensure all
wires are connected and in good condition.
The Limit Switch has failed and needs to be
replaced.
Make sure the flue is not blocked or covered
in any way. The fan wire may have come un-
plugged. Fan needs to be replaced.
The temperature of the water is exceeding
140°F. Turn the temperature down between
42°C-49°C.
The outlet temperature sensor either needs to
be cleaned or replaced.
Non Malfunction, you have exceeded the 50
minute run time of the unit. Turn off your
hot water tap then reopen to restart the unit.
EZ TANKLESS ULTRA HE OPE INSTALLATION MANUAL
PAGE 18.
