Troubleshooting Guide - Hitachi EP-NZG70J Instruction Manual

Troubleshooting Guide

Before Requesting Repairs
Symptoms
 Is the power plug properly inserted in the outlet?
Air does not
 Is the breaker switched off?
come out or it
 Did you turn on the "Power" button on the unit?
will not turn on
 Are the fi lter correctly installed in the unit?
 Is the child lock set?
 Are there any water droplets or dust on the opera-
It cannot be
operated
 Are you wearing any gloves or have bandages?
 Are you touching any other buttons?
 Are there any strong impact or is the unit tilted?
The operation
stopped mid-
 Is it operating in "Absence" or "Eco Saving Opera-
way
The airfl ow rate does
 Is the airfl ow rate switched?
not decrease even
though the air is clean
 Is the airfl ow rate switched?
The airfl ow
 Is the odor sensor opening blocked by dust or any
rate does not
increase even
though the air
is contaminat-
 When the power plug is in the outlet, did the air
ed
 Is the unit placed in a location where it cannot be
The air sen-
sor display
 Is the dust sensor dirty?
color does not
change from
 Is the odor sensor opening blocked by dust or any
green
 Is there anything nearby that the odor sensor may
The air sen-
sor display
color does not
change from
 Is the dust sensor dirty?
red
 Is the odor sensor opening blocked by dust or any
 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 "Pollen" or "Eco
The airfl ow rate
switched in the
middle of operation
 Are the rear panel, fi lters correctly set?
EP-NZG70J_EN.indd 27 EP-NZG70J_EN.indd 27
Check
tion panel?
tion" cycle?
other objects?
around become clean?
reached by odors and dust?
other objects?
detect?

Heating appliances that generate combustion gases

Alcohol, cosmetics, sprays, etc.
other objects?
Or is it time to replace the fi lter?
Saving Operation" quick cycles?
Solution
Insert the power plug properly in the outlet.
Switch on breaker.
Press the "Power" button to turn on.
Install fi lter correctly in the unit.
Cancel the setting. (P.E-20)
Wipe off with a soft cloth. (P.E-6, E-7)
Touch it directly.
Touch one at a time.
Make sure not to subject the unit to strong impacts.
Or place it in on a stable, even location.
Switch to other quick cycles.
(P.E-18, E-19)
Touch Airfl ow Level button and select Auto or an-
other airfl ow rate. (P.E-17)
Touch Airfl ow Level button and select Auto or an-
other airfl ow rate. (P.E-17)
Clean the odor sensor. (P.E-24)
Switch the airfl ow rate. (P.E-17)
Or open a window, unplug the power plug from
the outlet when the surrounding air becomes
clean, and plug it in again after 10 seconds.
(P.E-22)
Try moving it to another location.
Clean the dust sensor.
(P.E-24)
Clean the odor sensor.
(P.E-24)
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-22)
Clean the dust sensor.
(P.E-24)
Clean the odor sensor.
(P.E-24)
Refer to "Pre-fi lter" in "Cleaning" when cleaning
the pre-fi lter. (P.E-23)
Refer to "Replacing the Filter" when replacing
the fi lter.
Depending on the location or usage, the replace-
ment interval may be shorter.
Switch airfl ow rate and quick cycle.
(P.E-17 - E-19)
Set them correctly.
(P.E-14, E-15)
(P.E-25)
E-27
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