31
Error Codes
•
The water heaters have built in self-diagnostics for safety
and convenience when troubleshooting .
•
If there is a problem with the installation or the unit,
the T-D2-IN /510 model will display a numerical error
code on the 7-Seg LED on the computer board, and
the T-KJr2-IN / 110 & T-K4-IN / 310 models will display
a blinking red LED on the computer board . If a remote
controller is installed, the error codes will be displayed on
the remote controller .
•
Consult with the table on the following page for the
description of each error code .
T-KJr2-IN / 110 & T-K4-IN / 310
Red LED
Error code on the
computer board
Error code on the
TK-RE02
T-D2-IN / 510
7-Seg LED
Error code on the
computer board
Error Code the
TM-RE30
Single Unit Installations
Example: If your water heater displays the “321” error code
(which signifies an inlet thermistor failure)
•
T-KJr2-IN / 110 & T-K4-IN / 310 models: The red LED on
the computer board will be blinking two times .
•
If the TK-RE02 is installed: “32” will display on the screen
in its entirety .
•
T-D2-IN / 510 model: The 7-Seg LED on the computer
board will display “3”…”2”…”1” in that order one digit at a
time and continually repeat .
•
If the TM-RE30 is installed: “321” will display on the
screen in its entirety .
Easy-Link System
(For the T-D2-IN / 510 model only)
Error codes will be displayed differently with units installed
within an Easy-Link System, not only to show what the error
code is, but to also indicate which unit within the system has
the error code . Below is a sample of how the same error
code is displayed in an Easy-Link System .
Example: If Unit #2 has the “321” error code (inlet thermistor
failure)
•
Parent unit: It will display “3”…”2”…”1”…”0”…”2” one
digit at a time on the 7-Seg LED . The first 3 numbers
indicate the error code . The last two numbers indicate
that Unit #2 has the error code .
•
Unit #2: It will display “3”…”2”…”1 on the 7-Seg LED, just
like in the Single Unit example .
•
Unit #3 & #4: These units will not display anything, as the
error code does not pertain to them .
•
TM-RE30: It will display “232” on its screen . The first “2”
indicates that Unit #2 has the error . The “32” indicates the
first two digits of the “321” error code .
Unit #1
PARENT
Unit #2
CHILD
Unit #3
CHILD
Unit #4
CHILD
TM-RE30
“3” . .”2” . .”1” . .”0” . .”2”
“3” . .”2” . .”1"