Hitachi RCIM-1.5FSN4 - 10 TROUBLESHOOTING; Troubleshooting Common Phenomena

10 TROUBLESHOOTING
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Phenomenon Cause and action
Operation stopped
All indication lamps on the remote
control switch are turned OFF.
The micro-computer is activated to protect the device from
electromagnetic waves. Restart the operation.
"Motion Sensor is activated" is turned
ON on the remote control switch.
The operation is stopped automatically because the motion sensor is set
as "If absent: Stop" and it detects as absence for a period of time. (All the
indoor units connected to the same remote control switch are stopped).
After power failure
Restart the operation. If the instantaneous power failure is within 2
seconds, the operation restarts automatically.
White steam from indoor unit During heating operation This might occur during the defrosting operation in the heating operation.
White smoke from indoor
unit
At beginning of heating operation
season
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dried.
Mist from indoor unit
In restaurant or kitchen
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During dry operation
This might occur when the air outlet temperature becomes lower.
Change the operation mode.
During cooling operation in humid
environment
This might occur when the air outlet temperature becomes lower.
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Odor from indoor unit Odor discharged air from indoor unit
This might occur when the smell of cigarette smoke or room stuck to the
inside of the indoor unit.
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and the air inlet grille.
Sound from indoor unit
Grate is heard when starting or
stopping the operation.
This is the sound made when the components are rubbing against each
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the temperature change.
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heard during the operation.
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mechanism drains water. The sound may be heard especially when
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Sound of something cracking is heard
at the beginning of operation.
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freezes or melted during cooling operation.
Buzz is heard during Power-ON This is the sound made when the noise occurs at the electrical parts.
Dew condensation on air
panel
Dew condensation on air panel or
cabinet or dew drops
This might occur when the operation is performed in humid place (relative
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Temperature irregularity
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of each air outlet are irregular.
This might occur for structural reasons, such as the size of air outlet and
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This might occur according to the operation mode or operation conditions.
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Troubleshooting
PMML0363A rev.2 - 08/2016 - P541655912