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9. Self-Diagnosis and Special Mode Setting
9.1. Self-Diagnosis Functions
Self-Diagnosis Function provides information for errors to service personnel by "Self-Diagnosis
Display" when any error has occurred.
U**, H** and F** are stored in memory and held.
You can check latest error code by transmitting [0] [1] of Remote Controller in Service Mode.
Automatic Display on FL will be cancelled when the power is turned off or AC input is turned off
during self-diagnosis display is ON.
Error
Diagnosis contents
Code
U30
Remote control code
error
U59
Abnormal inner
temperature detected
U99
Hang-up
H19
Inoperative fan motor
Description
Display appears when main unit
and remote controller codes are
not matched.
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 speed for
the first 5 minutes. For the
remaining 25 minutes, fan motor
is also stopped.) The event is
saved in memory as well.
Displayed when communication
error has occurred between Main
microprocessor and Timer
microprocessor.
When inoperative fan motor is
detected after powered on, the
power is turned off automatically.
The event is saved in memory.
14
Monitor
Automatic FL
Display
No display
"*" is remote controller
code of the main
Display for 5 seconds.
No display
"U59 is displayed
minutes.
No display
Displayed is left
[POWER] key is
No display
No display
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