– 62 –
Hydro Unit
Installation Manual
EN
Defect mode detected by the remote controller
Check code
Diagnostic functional operation
Determination and action
Operational cause
Status of air-
conditioning
Condition
Not
displaying at
all
(cannot
operate by
the remote
controller)
No communication between hydro
unit an remote controller
Stop
–
Defect in the remote controller power
supply
1. Check the remote controller wiring.
2. Check the remote controller.
3. Check the hydro unit power supply
wiring.
4. Check the water heat exchange
control board.
E01
No communication between hydro
unit and remote controller
Stop
(Automatic reset)
Displayed when
the abnormality
is detected.
Defect in the reception of the remote
controller
1. Check the remote controller
crossover.
2. Check the remote controller.
3. Check the hydro power supply wiring.
4. Check the water heat exchanger
board.
E02
Defect in the signal transmission
to the hydro unit.
(Detected on the remote controller
side)
Stop
(Automatic reset)
Displayed when
the abnormality
is detected.
Defect in the transmission of the remote
controller
1. Check the transmitter circuit inside the
remote controller.
… Replace the remote controller.
E09
Several remote controller base
units
(Detected on the remote controller
side)
Stop
(The handset
continues)
Displayed when
the abnormality
is detected.
1.2 Check several base units with the
remote controller
… The base unit is only one, and others
are handsets.
62-EN
Summary of Contents for HWS-1405XWHM3-E
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