Mitsubishi Electric MSZ-GC22VA Service Manual page 8

8-3. AUTO RESTART FUNCTION
When the indoor unit is controlled with the remote controller, the operation mode, the set temperature, and the fan speed
are memorized by the indoor electronic control P.C. board. "AUTO RESTART FUNCTION" automatically starts operation
in the same mode just before the shutoff of the main power.
Operation
1
If the main power has been cut, the operation settings remain.
2
After the power is restored, the unit restarts automatically according to the memory.
(However, it takes at least 3 minutes for the compressor to start running.)
How to release "AUTO RESTART FUNCTION"
1
Turn off the main power for the unit.
2
Solder the jumper wire to JR07 on the indoor electronic control P.C. board. (Refer to 10-7.)
NOTE :
•
The operation settings are memorized when 10 seconds have passed after the indoor unit was operated with the
remote controller.
•
If main power is turned OFF or a power failure occurs while AUTO START/STOP timer is active, the timer setting is
cancelled.
•
If the unit has been off with the remote controller before power failure, the auto restart function does not work as the
power button of the remote controller is off.
•
To prevent breaker OFF due to the rush of starting current, systematize other home appliance not to turn ON at the
same time.
•
When some air conditioners are connected to the same supply system, if they are operated before power failure,
the starting current of all the compressors may flow simultaneously at restart.
Therefore, the special counter-measures are required to prevent the main voltage-drop or the rush of the starting
current by adding to the system that allows the units to start one by one.
Indoor electronic
control P.C. board
JR07
8