Toshiba HWS-802XWHM3-E Service Manual page 127

SW804
Self-holding valve vacuum operation (Switch to heating cycle)
SW804
(RY700, RY701, RY705, CN701 for check)
Sets relay RY700, RY701, and RY705 to ON.
(CN701 Between 1 to 4 Voltage = Approx. 325V)
This function operates for 10 seconds. After that it becomes OFF.
Self-holding valve release operation (Switch to cooling cycle)
SW804
Sets relay RY700 to ON.
(CN701 Between 1 to 4 Voltage = Approx. 325V)
This function operates for 10 seconds. After that it becomes OFF.
SV valve relay operation (RY702, CN702 for check)
SW804
Sets SV valve relay (RY702) to ON.
When SW801 is pressed again or after 2 minutes, the operation returns to the normal
control.
* HWS-1102 and 1402H-E do not have the parts mounted, so this operation is
unavailable.
Heater output relay operation (RY703, CN703 for check)
SW804
Sets relay for optional heater (RY703) to ON.
When SW801 is pressed again or after 2 minutes, the operation returns to the normal
control.
External output relay operation (RY704, CN704 for check)
SW804
Sets relay for external output (RY704) to ON.
When SW801 is pressed again or after 2 minutes, the operation returns to the normal
control.
(No operation particularly)
SW804
External output relay operation change
SW804
Note:
Do not use this setting.
(Note 1) The forced trial operation with this setting cannot be cancelled by the remote controller in the hydro unit.
Be sure to cancel the operation from the outdoor unit. (Press again SW801 for 1 second)
Operation when press button switch SW801 is pressed
126
Caution:
Although these
controls are available
during an operation,
basically perform
them when no
operation is in
progress.
Performing these
controls during an
operation may cause
dangerously rapid
pressure change.