Takagi T-K3 Service Manual page 38

Error Code Malfunction description
Flow adjustment valve fault
651
1 PCB and flow adjustment valve fault.
(Refer to section 10-8 & 10-15)
Visual inspection of flow adjustment valve: connection/breakage
of wires, motor drive locked due to scale buildup, and/or water
leakage
Normal: DC 7 ～ 16V between (black-red)
Visual inspection PCB: connection/breakage of wires and/or
burn marks on the computer board.
Error Code Malfunction description
1 PCB fault
701
Fault of preparation for the outlet
①
thermistor operation.
Fault of driving circuit for Gas
②
Proportional Valve(VG
1 Check the PCB
Visual inspection: connection/breakage of wires and/or burn
marks on the computer board.
Error Code Malfunction description
False flame detection
721
1 False flame detection (5 sec.)
Flame rod (insulated resistance) fault
Error Code Malfunction description
741
Miscommunication between T-K3 and
temperature remote controller
1 Temperature remote controller (TM-RE10 / TM-RE30) or PCB
fault
2 Check for signs of power surges.
Turn off the power or water
supply
Diagnosis
Turn off the power or water
supply
)
0
Diagnosis
(Refer to section 10-15)
Turn off the power or water
supply
Diagnosis
Restoring proper cable
connections between the T-K3
and the Remote controller (TM-
RE10 or TM-RE30). When the
computer detects proper
connections between the the T-
K3 and the remote controller,
"741" error code will cease to
display.
Diagnosis
38
CONFIDENTIAL
T-K3 Servi c e Manual
Ver. 1.05
Cancellation method
Checkpoint
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Cancellation method
Checkpoint
Cancellation method
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Cancellation method
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