T-K3 Service Manual
Ver. 1.05
29
CONFIDENTIAL
10-17. GFI
T-K3 Part #
#703
Takagi Part #
EKN73
Checkpoint
A, A1
Function
Failure event
Effects on the T-K3
if the GFI fails.
Error codes when
the GFI fails.
Diagnostic
Color/Number of
wires
N/A
1. Visual inspection: connection/breakage of wires and/or some signs of
electrical damage on the GFI
2. Check the power supply to the GFI. If the red LED on the GFI lights up after
pressing the “test“ button, the GFI is receiving power. After verifying the power
supply, verify that 100VAC is entering and leaving the GFI.
-Detects electrical leakage in the T-K3.
-Stops providing power to the T-K3 in the case of electrical leakage.
1. ON-failure: Always in the ON mode (never trips).
2. OFF-failure: Always in the OFF mode (always stays tripped).
1. ON-failure: GFI cannot detect electrical leakage within the T-K3.
2. OFF-failure: the T-K3 does not receive any power from the GFI, which
means the T-K3 cannot operate.
N/A
1- 7/ 8 " (5 0 mm )
2- 3/ 4 " (6 9 mm )
1-
1/
8"
(
3
0
m
m
)
2-
1/
4"
(
5
8
m
m
)
R e s e t b u t t o n
T e s t b u t t o n
From
transformer
To the computer
board
