Mitsubishi Electric Mr.Slim PAR-30MAA Technical Manual page 85

4. Power Outage Automatic Recovery Operation
● Whenever a power outage or switching of the power supply causes the power supply of an operating air conditioner to go from
OFF to ON, this function will automatically restore the operation of the air conditioner to its previous operating mode.
● If the power is turned from OFF to ON when the air conditioner is not in operation, the air conditioner will not automatically be
turned on. However, the timer operation will be cancelled if the air conditioner is in timer operation (including when the unit is
waiting for its start time). Setting for timer operation must be performed once again.
● If there is a momentary power outage of less than 1 second while the air conditioner is in operation, there may not be a clear
determination of whether or not there was a power failure. When it has been determined that there has been a power failure,
recovery will take approximately  minutes after the power is restored. So please wait. (Once "PLEASE WAIT" has appeared
on the display, a protection system will operate to prevent the unit from restarting for 3 minutes.)
When it has been determined that there has been no power failure, operation will continue as is.
● Settings can be made by function selections from the remote controller.
● When there is group control, selection of all refrigerants is required.
■ Judging a power outage during an instantaneous power failure
When an instantaneous power failure occurs, the air conditioner judges that a power outage has occurred depending on the
length of the power failure as shown below.
If it is determined that a power outage has occurred, the air conditioner will stop. (Even if the power is recovered after the in-
stantaneous power failure, the air conditioner will remain stopped.)
Time for unit operation to change
after power outage
Instantaneous
What occurs after the above time
power failure
elapses?
What happens when the power is
restored?
What happens when the power fails? Operation stops
Power
outage lasting
What happens when the power is
more than
restored?
one minute
Unit operation during power outage
* To return the air conditioner to the pre-power failure operation state after the power is restored (to resume operation if the air condi-
tioner was running, or stay stopped if it was stopped), enable the "automatic restart after power failure" mode with the remote control-
ler function selection.
After the power is restored, the air conditioner will resume operation after the system startup time (20 seconds to 1 minute) and the
balance time to protect the compressor (3 minutes) have elapsed.
5. Individual Control Operation From A Separate Room
● By simply centralizing the remote controllers installed in each room in a separate control room, individual control or centralized
monitoring of the air conditioners in each room can be attained.
● Air conditioner control can be performed up to a total of 500 meters away by connecting the indoor units and remote control-
lers with 0.3 to 1.25 mm² 2-core cable.
Remote controller
C o n r t l o o r o m
● If a remote controller is installed in a room and control room, refer to the section on operating with 2 remote controllers.
Unit operation during power outage
Standard model (model without inverter): approx. 0ms
Inverter model: approx. 100ms
(Varies according to the power voltage during operation and the op-
eration state.)
Operation stop
(An error extension occurs when the outdoor unit's compressor over-
current shutoff occurs, so the operation may restart after three min-
utes. The time that an error extension occurs varies according to the
operation load and power voltage.)
Operation remains stopped.
However, when automatic restart after power failure is set, the state
will return to the pre-power failure state.
Operation remains stopped.
However, when automatic restart after power failure is set, the state
will return to the pre-power failure state.
If automatic restart after power failure is set, the unit can be restored
to the pre-power failure state after the power is recovered. (Note) Au-
tomatic restart after power failure can be set with the remote controller
function settings.
n I d o r o u n t i
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n I d o r o u n t i n I d o r o u n
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