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Toshiba
[E04] Error
Outdoor unit operates
Group address
of remote controller is
correctly set
Yes
Check water heat exchanger
control board
If defective, replace it
Check outdoor control board
If defective, replace it
No
Check item code "14"
No
Yes
Hydro unit
Internal wiring and
connecting wire (1, 2, 3)
are correct
Correct wiring and
connecting wire
No
Yes
CN04 connector
and terminal block (1, 2, 3) wiring
are normal
Correct connector and
terminal block wiring
No
Yes
When power is
on again, D502 (Amber LED)
blinks
Check water heat
exchanger board
If defective, replace it
No
Yes
+00A09-002_01EN_SVM_ALL_Air_to_Water.book Page 84 Monday, October 5, 2009 2:09 PM