Check Item prior to notify a failure
Symptom
The Product doesn't work
The Product doesn't work
through you press the 'ON'
switch
Even though you change the
fan speed, the operation mode
doesn't change and it changes
to 'Auto or Low'
Check Item
Is power not supplied?
Is Air Filter, Total heat
exchanger clogged severely?
Is the Indoor temperature less
than -10°c or more than 45°C?
Is the Indoor temperature less
than -10°C or more than 45°C?
Check Item prior to notify a failure
Counter-measure
Supply Power
Follow cleaning and changing
method.
It's standby mode for
protecting Total Heat
Exchanger.
It's operation mode to protect
Total Heat Exchanger.
Owner's Manual 21