Mitsubishi Electric PFAV-P250VM-E Service Manual page 107

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(2) Outdoor unit P500 and P750 models
The compressor on the OC starts up.
F
The air conditioning load is large
enough to require a simultaneous
The compressor on the OC remains in operation, and the
compressor on the OS starts up.
50
F
Completed in the integrated operation time of 35 minutes.
or
F < 50Hz (both OC and OS)
Completed in the integrated operation time of 90 minutes.
HWE10190
Initial startup mode starts.
60Hz
operation of OC and OS.
Yes
60Hz (both OC and OS)
Initial startup mode complete
No
The compressor on the OC starts up.
*1
50
F
60Hz (OC)
Completed in the integrated operation time of 35 minutes.
or
F < 50Hz (OC)
Completed in the integrated operation time of 90 minutes.
*2
Both the OC and OS stop.
The startup sequence of the OC and OS is rotated.
The compressor on the OS starts up.
50
F
60Hz (OS)
Completed in the integrated operation time of 35 minutes.
or
F < 50Hz (OS)
Completed in the integrated operation time of 90 minutes.
*1
The air conditioning load is too small
for both the OC and the OS to
simultaneously stay in operation.
*2
The air conditioning load is
high enough for both OC and OS to
simultaneously stay in operation.
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