Pcb Error Codes - Takagi GS-2000W-AU Installation Manual

The water heater has a self diagnostic function for safety and convenience when troubleshooting.
If there is a problem with the installation or the unit, it will display a numerical error code on the remote
controller or blink the LED on the PCB. Consult the following chart for cause for each error code.
When remote controller is not installed
1 2 3 4 5 6 7 8
The LED on the PCB will blink.
The PCB is located at the bottom left-hand side of the cabinet and the error codes can be read from the LED
on the PCB or the Remote Control Temperature Display if fitted.
Error Codes On the PCB or Temperature Remote Controllers
The LED on the PCB
Burning LED:1 Blink
Burning LED:2 Blinks
Burning LED:3 Blinks
Burning LED:4 Blinks
Burning LED:5 Blinks

PCB ERROR CODES

Error Code on Remote
Controller
03
70
31
32
39
11
12
51
72
99
61
10
74
75
24
When remote controller is installed
The error code will be displayed on the remote
controller.
Incorrect Dipswitch Setting ( Gas )
Proportional valve / computer
Output Thermistor
Inlet Thermistor
Air-fuel Ratio Rod Failure
Ignition Failure
Flame Loss
Abnormal Main Gas valve or
Gas solenoid Valve
False Flame Detection
Imperfect combustion
Abnormal Outside Pump
Warning for 991 Error Setting
Remote controller
Remote controllers
(FC100-AU3-TP / SC100-AU3-TP)
Symptom
(MC100-AU3-TP)