Error Codes - Takagi 140 Indoor Installation Manual And Owner's Manual

PROBLEM
The fan motor is
still spinning after
operation has stopped.
Unit sounds abnormal
while in operation
Controller does not
display anything when
the power button is
turned on.
An ERROR code is
displayed.
• The water heater has self-diagnostics for safety and convenience when troubleshooting.
• If there is a problem with the water heater itself, or the installation of the unit, the error code will be
displayed on the temperature controller and remote controller.
• Consult with the table on the following pages for a description of each error code.
Error code indicator
on the built-in/remote
controller
Example: If your unit has a "321" error code (which signifies an inlet thermistor failure)
• Indicator on the built-in controller or remote controller : "321" will be displayed
• Green LED on the computer board: The green LED on the computer board will indicate this code with
two flashes every 1/2 second. The pattern will repeat with a three second delay between patterns.
Error Indication
Error Code
on the temperature
The number
controller
of flashes
031 701 711
One
on
311 321 341
Two
391
111 121
Three
• This is normal. After operation has stopped, the fan motor keeps
running from 15 to 70 seconds in order to re-ignite quickly, as well
as purge all the exhaust gas out of the flue.
• Contact the manufacturer at 1-877-737-2840.
• Make sure the water heater is supplied with power.
• Make sure the connection to the water heater is correct. (p. 34)
When the controller is turned ON,
NOTICE:
When the water heater has not operated for five minutes or more,
the display of the controllers turns off to conserve energy.
• Please see pp. 48 and 49.

ERROR CODES

Error code
321
on on
off
Green LED
Flash pattern
on
off
off
0.5 sec. on, 3 sec. off
0.5 sec. off
47
SOLUTIONS
STAND BY LED is lit.
Error code on the computer board
Indicated by 1/2-second flashes on
the Green LED.
Green LED
on the screen.
Green LED
on on
on on
off off off off
Error Code
on the temperature
The number
controller
of flashes
611
Four
101 941 991
Five
Six
510 551 721
0.5 sec. on, 0.5 sec. off
Page
Owner's Guide
Troubleshooting
Error code
Green LED
Flash pattern
3 sec. off