Hitachi EP-PF120J Instruction Manual page 32

Troubleshooting Guide
Symptoms
 Is the unit placed in a location where it cannot be
The clean
monitor display
color does not  Is the dust sensor dirty?
change from
 Is the odor sensor opening blocked by dust or any
blue
 Is there anything nearby that the odor sensor may
The clean
monitor display
color does not
change from
 Is the dust sensor dirty?
red
 Is the odor sensor opening blocked by dust or any
The fi lter indi-
 Did you reset the fi lter indicator after cleaning or
cator continues
fl ashing
The touch op-
eration panel
 Did you set the touch operation panel display to
display disap-
peared
 Is the pre-fi lter too dirty?
It is hard to re-
move the smell
or the unit has
 Is the fi lter dirty?
a smell
 Is it set in "Auto" airfl ow rate, or "Eco Saving Op-
The airfl ow rate
switched in the
middle of op-
 Are the front panel and fi lters correctly set?
eration
E-32
EP-PF120J_EN.indd 32 EP-PF120J_EN.indd 32
Check
reached by odors and dust?
other objects?
detect?

Heating appliances that generate combustion
gases

Alcohol, cosmetics, sprays, etc.
other objects?
replacing the fi lter?
be hidden?
Or is it time to replace the fi lter?
eration"?
(Continued)
Solution
Try moving it to another location.
Clean the dust sensor.
(P.E-28)
Clean the odor sensor.
(P.E-28)
The purifier may detect components of invisible
gas that cannot be cleaned by the fi lter and still
continue operating.
Open a window for ventilation.
(P.E-24)
Clean the dust sensor.
(P.E-28)
Clean the odor sensor.
(P.E-28)
When you select the fi lter you want to reset and
touch and hold the reset button for 3 seconds,
the indicator returns to lit up.
Hold the display switch button for 3 seconds and
switch the display settings. (P.E-18)
Refer to "Pre-fi lter" in "Cleaning" when cleaning
the pre-fi lter. (P.E-26)
Refer to "Replacing the Dust Filter / Deodorizing
Filter" when replacing the fi lter.
Depending on the location or usage, the replace-
ment interval may be shorter, even before the
fi lter indicators start blinking.
Switch airfl ow rate or select other mode.
(P.E-17,E-19)
Set them correctly.
(P.E-23)
(P.E-29)
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