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OTHER INDICATORS
6.1.4 Operation Control
Supplying Electrical Power
The " • " is activated when electrical power is turned ON.
In this case, the compressor is now in the preheat stage.
Operation might be delayed by a maximum of four hours. Do
not cut power to the outdoor unit during seasonal heating and
cooling operation.
During Hot Start (Heating Operation Only)
The " • " is turned ON.
Different Operation Mode
The operation mode set by the controller is different from the
outdoor unit operation mode.
(Except for the heat recovery system models.)
6.2 IN ABNORMAL CONDITIONS
6.2.1 Abnormality
• The RUN LED (Red) is flashing.
• The indoor unit number, alarm code, model code, and the
connected number of indoor units are displayed on LCD.
• In cases where a number of indoor units are connected, the
above items for each indoor unit are displayed one by one.
6.2.2 Power Failure
• All indicators are DARk.
• Once a unit is shut down by a power failure, it cannot
be restarted after the power recovers. Repeat starting
procedures again.
• In instances where the power failure and recovery are
instantaneous, the unit will restart automatically.
8
PMML0497 rev.1 - 12/2020
The operation mode indicator will flash.
Turned ON
This indicator will flash when a command to COOL has been set
by way of the controller during a HEATING operation.
In case the setback operation is enabled and the card key is
removed, setpoint is compensated and fan operate at "Low"
speed. While in setback mode, the boundary lines on the screen
disappear.
Turned ON
By default,
Cooling: Setpoint +2.5°C
Heating: Setpoint -2.5°C
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Advanced configuration is needed for the use of setback operation and
changing compensation for setback. Contact your distributor or dealer for
detailed information.
6.2.3 Electronic Interference
For instance, if a unit is in a shutdown state and all indicators
are OFF, this condition could have been induced by the reaction
of the unit's micro-computer fail-safe protections against
electronic interference (EMI). If this is the case, perform restart
procedures.
Setback Operation
N O T E
Flashing
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