Takagi T-K3 Service Manual page 37

Error Code Malfunction description
Flow sensor failure
441
1 Flow sensor fault
Visual inspection: connection/breakage of wires and/or debris
on impeller.
Check voltage/resistance between (red & black) or (white &
black)
Error Code Malfunction description
Fault of driving circuit for any of the gas
510
solenoid valves (MV, SV
(The computer checks the condition of the
main gas valve immediately after every
operation and the conditions of the solenoid
valves 6 hours after every operation)
1 PCB and/or gas valve fault (Refer to section 10-4 & 10-15)
Visual inspection of gas valves: connection/breakage of wires.
Normal: DC78 ～ 100V between COM (blue) & #3 (light blue)
Normal: DC78 ～ 100V between COM (blue) & #9 (green)
Normal: DC78 ～ 100V between COM (blue) & #53 (orange)
Normal: DC78 ～ 100V between COM (blue) & #73 (red)
Visual inspection of PCB: connection/breakage of wires and/or
burn marks on the computer board.
2 Gas solenoid valve fault (MV, SV
Error Code Malfunction description
Fan motor fault
611
1 PCB and fan motor fault (Refer to section 10-3 & 10-15)
Visual inspection of fan motor: connection/breakage of wires or
dust buildup (causing electrical shortage)
Normal: DC 110 ～ 160V between red & blue
Normal: DC 13 ～ 17V between yellow & blue
Normal: DC 2.0 ～ 6.5V between orange & blue
Verify fan motor speed of the T-K3 using the "diagnostics
mode" of the TM-RE10 temperature remote controller.
See the "12-1. How to diagnose the T-K3 using the TM-RE10"
Visual inspection of PCB: connection/breakage of wires and/or
burn marks on the computer board.
Turn off the power or water
supply
Diagnosis
(Refer to section 10-9)
, SV , and/or SV )
1 2 3
Turn off the power supply
Diagnosis
, SV , and/or SV
1 2
Turn off the power or water
supply
Diagnosis
37
CONFIDENTIAL
T-K3 Servi c e Manual
Ver. 1.05
Cancellation method
Checkpoint
H2
Cancellation method
Checkpoint
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3
Cancellation method
Checkpoint
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