Toshiba SMMS-e, Quick Reference, Page: 59 / 96

59
Service Support
Function
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 operation
on the interface P.C. board in the outdoor unit. Use this function to check there is no refrigerant clogging with ON/
OFF operation of the solenoid valve.
[Operation]
(1) Set the switches SW01/SW02/SW03 on the interface P.C. board of the outdoor unit to [2/1/3].
(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 shown below.)
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 been kept with the same number for
5 seconds or more.
NOTE 2)
The mark [O] in the table indicates that the corresponding solenoid valve is forcedly turned on.
NOTE 3)
The mark [-] in the table indicates that ON/OFF of the solenoid valve is controlled based upon the specifi-
cations of the air conditioner.
NOTE 4)
The mark [×] in the table indicates that the corresponding solenoid valve is forcedly turned off with this
operation.
NOTE 5)
The case heater output is for both the compressor and accumulator heaters.
[Clear]
Return switches SW01/SW02/SW03 on the interface P.C. board to [1/1/1].
NOTE)
As this function is not based on the specified general control, be sure to release this mode after checking.
SV2 SV52 SV41 SV42 SV3A SV3B SV3C SV3D
1 [ 2 ] - - - - - - -
3 [ 52] - - - - - - -
4 [ 41] - - - - - - -
5 [ 42] - - - - - - -
7 [ 3A] - - - - - - -
8 [ 3b] - - - - - - -
9 [ 3C] - - - - - - -
10 [ 3d] - - - - - - -
11 [ 3-] - - - -
12 15 - - - - - - - -
16 [ALL]
SW02
7-segment
display [B]
Operation pattern of solenoid valve
Case heater
output relay
SV2 SV5 SV41 SV42 SV3A SV3B SV3C SV3D SV3E SV6 SV52 SV11 SV12 SV14
1
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16
[2]
[5]
[41]
[42]
[3A]
[3b]
[3C]
[3d]
[3-]
[6]
[52]
[11]
[12]
[14]
[ALL]
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SW02 7-segment
display [B]
Case heater
output relay
Operation pattern of solenoid valve
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Cooling, Heat Pump type
Heat Recovery type
<Check Code Clearing Function>