Filter Cleaning; Taking Out The Filter; Clean The Filter; Reset Of Filter Indication - Hitachi air Core 700 Operation Installation Maintenance Manual

6. Filter Cleaning

CAUTION
!
•
Do not operate the system without the air filter to protect the indoor unit heat exchanger against being
clogged.
Turn Off the main power switch before taking out the filter. (The previous operation mode may appear.)

6.1 Taking Out the Filter

The indication, "FILTER" is shown on the display of the remote control switch after approximately 1,200
hour operation. Take out the air filter according to the following steps.
Step1
Open the air inlet grille after removing screw covers and fixing screws.
Step2
Take out the air filter from the air inlet grille by supporting the air grille
and lifting the air filter after detaching the filter from clips.

6.2 Clean the Filter

Clean the air filter according to the following steps.
Step1
Use a vacuum cleaner or let water flow onto the air filter for removing the dirt from the air filter.
CAUTION
!
•
Do not use hot water higher than approximately 40°C.
Step2
Dry the air filter in the shade after shaking off moisture.

6.3 Reset of Filter Indication

After cleaning the air filter, press the "RESET" button on the wired controller. The FILTER indication will
disappear and the filter timer will be reset.

7. Troubleshooting

CAUTION
!
•
When overflow of drain water from the indoor unit occurs, stop the operation and contact your
contractor.
•
When you smell or see white smoke coming from the unit, turn OFF the main power supply and contact
your contractor.

7.1 If Trouble Still Remains

If the trouble still remains even after checking the following, contact your contractor and inform them of
the following items.
(1) Unit Model Name
(2) Content of Trouble
(3) Alarm Code No. on Liquid Crystal Display

7.2 No Operation

Check whether "TEMP" is set at the correct temperature.
Fig.7.1 Open the air inlet grille
-3-
6. Filter Cleaning
screw covers
screw
and fixing screws
Pull screw cover
Pull screw
cover