Installation manual

[ VII Control ]
- 140 -
HWE10050 GB
Control at Initial Start-up
-10- Control at Initial Start-up
When started up for the first time before 12 hours have elapsed after power on, the unit goes into the initial startup mode.
At the completion of the initial operation mode on the OC and OS, they will go into the normal control mode.
1. Flowchart of initial operation
(1) Single-outdoor-unit system
(2) Two-outdoor-unit system
∗1 Qj:Total capacity (models) code
Refer to the VII [1] 2.(1) Dipswitches for the capacity code (page 130).
50 F 60Hz
or F < 50Hz
Initial startup mode starts.
Completed in the integrated operation time of 35 minutes.
Initial startup mode complete
or the discharge superheat (TH4 - Tc) is detected (within
5 minutes of startup) that remains above approximately
20°C [36°F] for one minute .
Completed in the integrated operation time of 90 minutes.
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
20°C [36°F] for one minute .
or the discharge superheat (TH4 - Tc) is detected (within
5 minutes of startup) that remains above approximately
20°C [36°F] for one minute .
or the discharge superheat (TH4 - Tc) is detected (within
5 minutes of startup) that remains above approximately
20°C [36°F] 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.