Error
Code
Diagnosis contents Description Monitor
Display
FL display
U12 Remote control code
error
Display appears when main unit
and remote controller codes are
not matched.
No display
“*” is remote controller
code of the main unit.
Display for 5 seconds.
U59 Abnormal inner
temperature detected
Display appears when the drive
temperature exceeds 70°C.
The power is turned off forcibly.
For 30 minutes after this, all key
entries are disabled. (Fan motor
operates at the highest speedfor
the first 5 minutes. For the
remaining 25 minutes, fan motor
is also stopped.) The event is
saved in memory as well.
No display
“U59” is displayed for 30
minutes.
U99 Hang-up Displayed when communication
error has occurred between Main
microprocessor and Timer
microprocessor.
No display
Displayed is left until the
[POWER] key is pressed.
H19 Inoperative fan motor Display appears when
inoperative fan motor is detected
after powered on.
The power is turned off when
detecting.
No display
Displayed is left.
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