Self Diagnosis Memory Function; Re-Indication Method For Defective Mode; Clear Method For Data Of Defective Mode - Hitachi RAF-50FX8 Service Manual

Self Diagnosis Memory Function

Defective modes stored in the non-volatile memory of the indoor unit are re-indicated by the remote controller operation. This
is useful to check the defective mode when switching OFF the power or restarting the unit operation without checking the
number of blinking of the defective indication lamp. (The defective mode which occurred the last is memorized.)
Defective modes of which occurrence frequency is too low to indicate on the indoor unit are also stored in the memory, thus
defective phenomenon which was not checked at the visit can be found by clearing the memory and rechecking the memory
contents later on.

Re-indication method for defective mode .

1.
Turn the circuit breaker OFF and set the remote controller STOP position.
(No indication status.)
2.
Turn the circuit breaker ON.
3.
Set the remote controller COOL, and to be set 32℃ and press the［ ］ button
while pressing the［∧］of temperature buttons.
4. The main unit makes the receiving sound［Pi-］and becomes the defective indication
mode.(Timer lamp goes on and off, but if the unit has no memory, the indication is
not shown.)
5.
Finish after turning the circuit breaker OFF.(Please turn OFF once without fail.)

Clear method for data of defective mode.

1.
Proceed the re-indication of defective mode. (proceed without fail, after having the
re-indication, do not operate the remote controller except for indicated ones.)
2. Turn the circuit breaker OFF. (Continue OFF more than 5 seconds.)
3.
Turn the circuit breaker ON.
4.
Set the remote controller HEAT and to be set 16℃ and press the［ ］button.
while pressing the［∨］of temperature buttons.
5.
Finish the clear after having the receiving sound
6.
Turn the circuit breaker OFF and finish.( Please turn OFF once without fail.)
Notes
This function is valid only once right after switching ON the power and does not work if other remote controller operation
was made prior to it.
Take note that this function may not work when not following the above procedures.
(If it does not work, switch OFF the power and try again.)
If nothing is stored in the memory, the lamp does not blink even if re-indication operation is carried out.
After carrying out re-indication operation, the remote controller operation will not be accepted once the data has been
cleared. To carry out normal operation, switch OFF the power beforehand.
Transmission
Transmission.
［Pii- ］ of one second.
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