Troubleshooting
ESIE13-02
Part 4 – Troubleshooting
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Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be
occurred.
Is the
type of remote controller
wired or wireless?
Does the pump/fan rotate?
Is the filter soiled?
Possible causes as follows:
* Refrigerant overcharge
* Mixing of air in refrigerant
system
* Faulty pressure switch
Is there
any item disturbing
air/waterflow?
Is the heat
exchanger soiled?
Is the remote
controller displaying the
t
-symbol?
NO
NO
YES
NO
YES
YES
Hydro-box flow error
Hydro-box flow error
YES
YES
Heating: Hydro-box
Cooling: Outdoor unit
[
]
NO
NO
Diagnose based on the
error code on remote
controller
Malfunction of fan motor
Check the magnetic
switch and aux. switch for
pump/fan motor
Cleaning
Remove the disturbing
item.
Cleaning of the heat
exchanger
After vacuum drying,
charge correct amount of
refrigerant
Check the pressure
switch.