Hitachi RAS-25WX8 Manuel De Maintenance page 156

CHECKING THE REMOTE CONTROLLER
the remote control switch within
If it is good, check the main P. W. B.
You can check the remote control switch by
other methods as explained below.
Using the test card
The sensible area should flash in orange when you
operate the remote control unit if it is good.
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Is battery polarity correct?
Yes
Is the battery check sign + –
flashing?
No
Turn on an AM radio, bring
15 cm of the radio, and press
the ON/OFF button.
Does the radio buzz noisily?
Yes
Check the indoor unit signal
receiving P. W. B..
Ultra redray test card
Sensible area
Within 2 cm
manuals search engine
No
Install the battery in the correct polarity.
Yes
Replace the battery.
No
Check the LED (D1) with
a multimeter.
"Buzz"
Within 15 cm
[AM radio]
Check functions again.
If it does not work, replace
the remote controller.
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