Toshiba HWT-601XWHT6W-E - Page 121

120
[F14] TTW sensor error
[F17] TFI sensor error
[F18] THO sensor error
Correct TTW sensor
connection
Replace TTW sensor
No
No
TTW sensor connector
(CN603 (MCC-1753), CN03,
CN20 (MCC-1755)) is
connected
Yes
TTW sensor
characteristic is normal
Yes
Start
Check water heat exchange control board
If defective, replace it
PC board
MCC-1753
MCC-1755
(Refer to Characteristic table on page 137)
Correct TFI sensor
connection
Replace TFI sensor
No
No
TFI sensor connector
(CN605 (MCC-1753), CN03,
CN20 (MCC-1755)) is
connected
Yes
TFI sensor
characteristic is normal
Yes
Start
Check water heat exchange control board
If defective, replace it
PC board
MCC-1753
MCC-1755
(Refer to Characteristic table on page 137)
Correct THO sensor
connection
Replace THO sensor
No
No
THO sensor
connector (CN602) is
connected
Yes
THO sensor
characteristic is normal
Yes
Start
Check water heat exchange control board
If defective, replace it
PC board
MCC-1753
(Refer to Characteristic table on page 137)