Specifications

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5) Abnormal high-pressure protection
a) If the pressure rises and 63H1 is operated (opened), the compressor is stopped. After a 3-minute delay, the com-
pressor is restarted. An abnormal stop is performed when 63H1 is opened 5 times within 60 minutes of the first
operation. e Restore after repairing.
b) An abnormal stop is performed at the first occurrence if 63H1 remains open after 60 minutes have passed from the
first time the compressor was stopped.
Note (1) Once 63H1 has been restored after an abnormal stop, the unit can be restarted using the remote control.
6) Compressor motor protection
The same detection control as 63H1 will be performed when the internal thermostat 49C operates due to a rise in the
windings of the compressor motor. The setting values of the internal thermostat 49C are 90 °C open and 73 °C close.
7) Control of the closing and opening of the service valve
a) When the compressor is ON for the first time after turning on the power, the heating operation starts regardless of
any setting.
b) If the 63H2 turns OFF(open) within 10 seconds after the compressor is ON, the power will turn off as abnormal
stop.
c) To recover from the abnormal stop, turn on the power again after the 63H2 is ON(closed).
d) If the 63H2 doesn't turn OFF(open) within 10 seconds after the compressor is ON, the operation immediately
changes to the “set mode” to start normal operation.
8) Test run
a) For a test run, it is possible to use the dip switches SW5-3 and SW5-4 on the printed circuit board in the outdoor
unit.
b) Test run time is 30 minutes. Protective devices are effectively controlled.
OFF Test run for cooling
ON Test run for heating
OFF Normal
ON SW5-4
SW5-3