Takagi T-K3 Service Manual page 29

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