Hitachi RAK-25PSEW Handbuch Seite 15

TROUBLESHOOTING (continued)
PLEASE CHECK THE FOLLOWING BEFORE SERVICE
Signal cannot be • Do the batteries need replacement?
received
(Remote controller
• Is the polarity of the inserted batteries correct?
display is dim or
blank)
• Is the fuse blown out or circuit breaker tripped?
Operation does not
start
• Is there a blackout? (Operation remains idle after a blackout.)
• Is the micro mesh stainless filter blocked with dust?
• Is the set temperature suitable?
Does not cool well • Have the horizontal air deflector been adjusted to the correct positions according to
Does not heat well
• Are the air inlets and air outlets of indoor and outdoor units blocked?
• Is the fan speed "LOW" or "SILENT"?
(FILTER CLEAN)
• Check "filter cleaning operation".
indicator blinks
FROST WASH OPERATION
Is the total operation time of the air conditioner beyond about 42 hours when the
air-conditioner is operated for about 30 minutes and stopped?
It does not wash when outside temperature is less than about 1 degrees Celsius or
more than 43 degrees Celsius.
It does not wash when the humidity in the room is about 30% or less or about 70% or
more.
When "FROST WASH" is done by operating a remote controller, it does not wash
when the room temperature is less than about 10 degrees Celsius or more than about
Frost wash operation
32 degrees Celsius.
does not start
Does not change to non -automatic "FROST WASH"?
Does it happen after "sleep" and "time off"?
"FROST WASH" with remote controller.
Within 60 minutes after the end of "FROST WASH", "FROST WASH" is not operated
for product protection.
Noise occurred
It is the sound that the internal machine is inflated and contracted by the temperature
during frost wash
change and the fin of the heat exchanger is frozen and thawed
operation
Repeat for 1 second
Because "FROST WASH" can not work when operating the "FROST WASH" with
remote controller.
(FROST WASH)
indicator blinks
Repeat for 4 seconds on and 1 second off for 15 seconds
Because it is not "FROST WASH" for a long time.
the operation mode selected?
Automatic "FROST WASH" interval becomes longer. Please operate manual
on and 1 second off for 10 seconds
The air conditioner is operating
・
・ Outside air temperature, room temperature and room humidity are not
suitable for "FROST WASH"
・ It has not been over 60 minutes since the end of "FROST WASH"
Operate the remote controller to operate "FROST WASH".
- 15 -