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Toshiba
[F20] Error TFI detach failure
[F23] Error Lo pressure sensor detach failure
Attach TFI sensor
to pipe
Replace TFI sensor
No
No
TFI sensor
is attached to pipe
Yes
TFI sensor
characteristic is normal
Yes
Replace TWI sensor
No
(See characteristic table on page 101)
(See characteristic table on page 101)
TWI sensor
characteristic is normal
Yes
Replace TWO sensor
No
(See characteristic table on page 101)
TWO sensor
characteristic is normal
Yes
Start
Replace water heat exchange control board
Attach lo pressure sensor
Replace lo pressure sensor
Yes
No
Lo pressure sensor
is detached (CN207, 212)
No
When operation
is stopped, lo pressure sensor
is normal *1
Yes
Start
*1 How to determine: When operation is stopped
Replace water heat exchange control board
+00A09-002_01EN_SVM_ALL_Air_to_Water.book Page 89 Monday, October 5, 2009 2:09 PM