Troubleshooting
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ERROR CODES
The units are self diagnostic for safety and convenience when trouble shooting.
If there is a problem with the installation or the unit, depending on the model or if there is a
remote controller installed, it will either display a numerical error code on the 7-Seg LED on the
computer board (for the 510 (T-D2) models only), display a blinking red LED (for the 110 (T-KJr2)
and 310 (T-K4) models), or the error code will display on the remote controller if it is installed.
Consult with the table on the following page for the cause of each error code.
-Single unit installations-
Example: If your unit displays the “321” error code (which signifies an inlet thermistor failure)
110 (T-KJr2) and 310 (T-K4) models:
The red LED on the computer board will be blinking two times.
If the remote controller 9007666005 (TK-RE02) is installed: “32” will display on the screen in its
entirety.
510 (T-D2) models: 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 remote controller 9007603005 (TM-RE30) is installed: “321” will display on the screen in
its entirety.
-Easy-Link system for the 510 (T-D2) models only-
Error codes will display 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 and #4: These units will not
display anything, as the error code
does not pertain to them.
Remote controller 9007603005
(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.
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