154
14-2-6. Solenoid Valve Forced Open/Close Function in Outdoor Unit
This function is provided to forcedly open each solenoid valve mounted in the outdoor unit by the switch opera-
tion on the interface P.C. board in the outdoor unit. When checking there is no refrigerant clogging with ON/OFF
operation of the solenoid valve, use this function.
[Operation]
1. Set the switch SW01 on the interface P.C. board of the outdoor unit to [2], SW02 to [1], SW03 to [3].
2. When [H. r] is displayed in 7-segment display [A], keep pushing the switch SW04 for 2 seconds or more.
3. From when [2] is displayed in 7-segment display [B], SV2 is turned on.
4. After then, ON and OFF of each solenoid valve are exchanged by changing the setup number of the switch
SW02.
(ON/OFF output pattern of each solenoid valve is as follows.)
NOTE 1) Display in 7-segment display [B] is exchanged just when the number of SW02 has been changed,
on the other hand, the solenoid valve output is exchanged when SW02 has kept with the same
number for 5 seconds or more.
NOTE 2) The mark [
¡
] in the table indicates the corresponding solenoid valve is forcedly turned on.
NOTE 3) The mark [—] in the table indicates ON/OFF of the solenoid valve is controlled based upon the
specifications of the air conditioner.—
NOTE 4) The mark [
×
] in the table indicates the corresponding solenoid valve is forcedly turned off with this
operation.
NOTE 5) The case heater outputs heat air for both compressor and accumulator heaters.
SW02
1
2
3
4
5
6
7
8
9
10 to 15
16
[Clear]
Return numbers of SW01, SW02, and SW03 on the interface P.C. board to [1] each.
NOTE) As this control is not based on the specifications of the general air conditioner, be sure to release this
mode after confirmation.
7-segment display
[B]
[2 ]
[5 ]
[4– ]
[3A ]
[3b ]
[3C ]
[3d ]
[3E ]
[3– ]
[]
[ ALL ]
Operation pattern of solenoid valve
SV2 SV5 SV41 SV42 SV3A SV3B SV3C SV3D SV3E
¡
———————
¡
—
¡
——————
¡
——
¡¡
————
¡
————
¡
———
¡
—————
¡
——
¡
——————
¡
—
¡
———————
¡¡
————————
×
————
¡¡¡
——
————————
¡
¡¡¡¡¡¡¡¡¡
Case heater
output relay
¡
¡
¡
¡
¡
¡
¡
¡
¡
¡
¡
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