Mitsubishi Electric PUHY-P1000, Service Handbook

Page: 109 / 334

[5-2 Outdoor Unit Control ]
- 100 -
HWE14040 GB
(2) P400 - P900YSKB models

1 Qj:Total capacity (models) code
For information about capacity codes, refer to the following page(s).[5-1-2 Indoor Unit Switch Functions and Factory Set-
tings](page 89)
The compressor on the OC starts up.
The total operating load of the indoor unit
after 5 minutes of operation is P250 or above.
(*1 Qj 50)
Initial startup mode starts.
F 60Hz
Yes
No
or F < 50Hz (both OC and OS)
Completed in the integrated operation time of 90 minutes.
The compressor on the OC remains in operation, and the
compressor on the OS starts up.
or F < 50Hz (OC)
Completed in the integrated operation time of 90 minutes.
The compressor on the OC starts up.
Both the OC and OS stop.
The startup sequence of the OC and OS is rotated.
or F < 50Hz (OS)
Completed in the integrated operation time of 90 minutes.
The compressor on the OS starts up.
*2
*3
*2
The air conditioning load is too small for both the OC and the OS to
simultaneously stay in operation.
*3
The air conditioning load is high enough for both OC and OS to
simultaneously stay in operation.
Initial startup mode complete
or the discharge superheat (TH4 - Tc) is detected (within
5 minutes of startup) that remains above approximately
25 degrees for one minute .
or the discharge superheat (TH4 - Tc) is detected (within
5 minutes of startup) that remains above approximately
25 degrees for one minute .
or the discharge superheat (TH4 - Tc) is detected (within
5 minutes of startup) that remains above approximately
25 degrees for one minute .
50 F 60Hz (both OC and OS)
Completed in the integrated operation time of 35 minutes.
50 F 60Hz (OC)
Completed in the integrated operation time of 35 minutes.
50 F 60Hz (OS)
Completed in the integrated operation time of 35 minutes.