Hitachi RCIM-1.5FSN4 - 6.3 INDICATIONS OF PC-ARFPE IN ABNORMAL CONDITION; 7 AUTOMATIC CONTROL; Automatic Control Functions

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6.3 INDICATIONS OF PC-ARFPE IN ABNORMAL CONDITION
6.3.1 $EQRUPDOLW\
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• The indoor unit number, the alarm code, the unit model code
and the number of the connected indoor units are displayed
on the LCD.
• In case that the plural indoor units are connected to one
remote control switch, select the object indoor unit on the
LCD to display the information.
6.3.2 3RZHUIDLOXUH
• All the indications are OFF.
• Once the unit stops due to power failure, the operation
will not restart even after the power recovers. Perform the
starting procedures again.
• In case of the instantaneous power failure for 2 seconds or
less, the standard unit restarts the operation automatically.
6.3.3 (OHFWULFQRLVH
There could be a case that all the indications are OFF and
the unit is stopped. This is due to the activation of the micro
computer for the unit protection from the electric noise.
Perform the starting procedures again.
7 AUTOMATIC CONTROL
The system is equipped with the following functions.
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This function is utilized to protect the compressor. When the
function is valid, the compressor does not operate for at least 3
minutes after it stops operating, with the RUN indicator turned
ON. The operation restarts automatically after 3 minutes.
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This function is utilized to protect the compressor. When the
function is valid, the compressor does not stop operating for at
least 3 minutes after it starts operating. However, if all indoor
units in the system are stopped by the remote control switch, the
compressor will stop operating.
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This function is utilized to prevent oil accumulation in the heat
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If the indoor unit is stopped continuously for more than 2 hours,
this function is operated for a few minutes.
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This function is utilized to prevent frost formation on the indoor
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discharge air temperature, the cooling operation switches to fan
operation automatically.
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automatically when the operation stops during cooling operation.
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indoor unit during self cleaning operation. However, it is not
abnormal.
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This function is utilized to prevent cold discharged air at start-
up of heating operation, after defrosting operation, etc. The fan
speed automatically switches from Slow to Low and then to the
set fan speed. The fan operation might be stopped for up to 2
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The indoor fan stops during defrosting operation to prevent
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horizontally.
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When the heating operation is stopped, the indoor fan operation
(fan speed: Low) might continue for up to 2 minutes to lower the
temperature of the inside of the unit.
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When the heating operation is stopped by pressing RUN/STOP
switch, frosting on the outdoor unit is checked and the defrosting
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heating operation, heating operation is stopped due to activation
of the outdoor thermistor until the temperature becomes low.
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Automatic control
PMML0363A rev.2 - 08/2016 - P54165599