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Hitachi RPC-1.5FSR Manual De Instalación Y Funcionamiento página 24

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TROUBLESHOOTING
9 TROUBLESHOOTING
Stopped operation
White steam from indoor unit
White smoke from indoor unit
Mist from indoor unit
Odor from indoor unit
Sound from indoor unit
Dew on panel
Temperature irregularity
Turned ON "HOT-START" or "Preheating" on LCD
Flashing operation mode on LCD
8
PMML0551 rev.4 - 07/2023 - A10762310A
Phenomenon
All indication lamps on the remote control
switch are turned OFF.
Power failure occurs.
During the heating operation.
The heating operation is begun to use.
The indoor unit is used in a restaurant or a
kitchen.
During the dry operation
The cooling operation is performed in high
humidity environment.
During Frost/Wash Operation
The air flow from the indoor unit has odor.
Sound is heard when starting or stopping
the operation.
Sound which water flows or is boiled is
heard during the operation.
Growling sound may be heard temporarily
right after the air flow volume is changed.
Dew condensation occurs on the panel or
the cabinet or dew drops.
The air flow volume from each air outlet
and each air outlet temperature are
irregular.
Cause and action
The micro-computer is activated to protect the device from
electromagnetic waves.
The operation can be recovered if it is started from the beginning.
Start the operation from the beginning.
If the instantaneous power failure is within 2 seconds, the operation
is restarted automatically.
It may occur during the defrosting operation in the heating operation.
The dust attached to the heat exchanger is dried.
Oil is attached to the fins and the heat exchange efficiency may be
decreased.
It may occur when the air outlet temperature becomes lower.
Raise the set temperature and the air flow volume.
This might occur when frost is formed on the heat exchangers fins
It may occur because the cigarette smoke and room odour are stuck
inside the indoor unit.
Ventilate well by the fan mode and clean the air filter, the flat panel,
the air outlet and the air inlet grille. It may be effective for odor
eliminating.
It is generated because the resin parts are stretched by the
temperature change and rubbed with other parts.
It is generated because the refrigerant flows or the drain-up
mechanism drains water. Especially, sound may be heard
when starting the operation or stopping the compressor (for
approx. 3 minutes).
It is generated because the fan motor makes temporary sound by
change of fan speed.
It may occur if the operation is performed in high humidity place
(relative humidity is approx. 80%.) for a long time.
The temperature irregularity occurs because of the size of air outlet
and the structure such as the location of heat exchanger.
The indications may be turned ON or flash according to the operation
mode or condition.

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