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Troubleshooting
The following cases may not always be a
malfunction, please check it before asking for
service.
Trouble
Does not run
No cooling or heating air
Ineffective control
Does not operate
immediately
don't run
Peculiar odor
A sound of flowing water
Cracking sound is heard
Spray mist from the outlet Mist appears when the room air
The compressor indicator
(red) lights on constantly,
and indoor fan stops.
Specifications in this document are subject to change without notice, in order that Hitachi-Johnson
Controls Air Conditioning, Inc. may bring the latest innovations to their customers.
Hitachi-Johnson Controls Air Conditioning, Inc.
© 2022 Hitachi- Johnson Controls Air Conditioning, Inc.
Analysis
1. If the protector trip or fuse is blown.
2. Please wait for 3 minutes and start
again, protector device may be
preventing unit to work.
3. If batteries in the remote controller
exhausted.
4. If the plug is not properly plugged.
？
1. Is the air filter dirty
2. Are the intakes and outlets of the air
conditioner blocked？
3. Is the temperature set properly？
If strong interference(from excessive
static electricity discharge, power
supply voltage abnormality)presents,
operation will be abnormal. At this time,
disconnect from the power supply and
connect back 2-3 seconds later.
Changing mode during operation,
3 minutes will delay.
This odor may come from another
source such as furniture, cigarette etc,
which issucked in the unit and blows
out with the air.
Caused by the flow of refrigerant in the
air conditioner, not a trouble.
Defrosting sound in heating mode.
The sound may be generated by the
expansion or contraction of the front
panel due to change of temperature.
becomes very cold because of cool air
discharged from indoor unit during
COOLING or DRY operation mode.
The unit is shifting from heating mode
to defrost.The indicator will lights off
within ten minutes and returns to
heating mode.
NO
Display
Temperature indicator
Display set temperature.
1
It shows FC after 200 hours of usage as
reminder to clean the filter.After filter cleaning
press the filter reset button located on the
indoor unit behind the front panel in order to
reset the display.(optional)
Running indicator
2
It lights up when the AC is running.
It flashes during defrosting.
Timer indicator
3
It lights up during set time
Sleep indicator
4
It lights up in sleep mode
Compressor indicator
5
It lights up when the compressor is on
Mode indicator
6
Heating displays orange,others display white
7
Fan speed indicator
8
Signal Receptor
Smart WIFI indicator
9
It lights up during WIFI is on
FAN ONLY mode indicator
10
It lights up in FAN ONLY mode
Airflow Follow You/Airflow Avoid You
11
indicator
Humidity indicator
12
It lights up in humidity mode.
Artificial Intelligence Smart Running
AI
13
Indicator
It lights up in AI mode
Example:
8
3
2
4
The symbols may be different from these models, but the functions are similar.
A
Emergency button
Pressing this button can let the AC run or stop
The symbol may be different from your model, but the button is similar.
2022.05 Version.A Printed in China
7
Introduction
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1
2
3
4
5
1
A
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8
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