Toshiba ESTIA HWS-1501CSHM3-E, Service Manual

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8-3.
Hydro Unit Control 4) Control by the flow switch
Whether water flows or not is judged with the ON/OFF of the flow switch.
Without water-flow determination from the flow switch after the hot water supply operation, heating operation, or cooling
operation, The HP, backup heater and booster heater are not energized. Similarly, The “A01” error indication flashes if
the flow switch judged that water does not flow.
The specification of the flow switch is the same in 803**-E and 1403**-E. The flow setting differs due to the specification
of piping in the hydro unit.
5) Mixing Valve control (2-temperature heating control)
To set different radiator unit supply temperatures or floor heating supply temperatures, the unit performs Mixing Valve
control.
When Mixing Valve "Yes" is selected, the unit controls Mixing Valve every 4 minutes (FC) based on the difference TSC_
Δ
T between the Zone2 set temperature and TFI (floor inlet water temperature sensor) temperature as follows:
To enable 2 zone temperature control switch DP_SW12-3 to ON.
NOTE:
The mixing valve will automatically be reset if 24 hours pass with the valve fully closed.
Related FC
6) Room temperature control
You can install a sub remote control (separately purchased) in a room to control room temperature.
6-1) Installing the sub remote control
• Wiring with the main unit (See the figure on the right) : After detaching the front
panel, connect the sub remote control to the right terminal on the main remote
control, which is connected with the hydro unit. (No polarity)
• Place to install (inside a room): At the height of 100cm-150cm on a wall Opposite
to the radiator or fan coil installed
No assignment when floor heating is used on the room.
6-2) Room temperature control settings
• Function code setting:FC_40="1"
• Setting of DPSW on the remote control :
DP_SW01,02=”ON”(DP_SW03,04=“OFF”)
Item Operation flow and applicable data, etc.
Model Determined that water flows when: Determined that water does not flow when:
HWS-803**-E 13L or more water flows per minute Water less than 13L flows per minute
HWS-1403**-E 18L or more water flows per minute Water less than 18L flows per minute
TSC_
Δ
T 2 TSC_
Δ
T -2 TSC_
Δ
T < 2 -2 > TSC_
Δ
T
Control value + 1 step (Open) ± 0 step - 1 step (Close)
Initial value Driving range 1 step Control cycle
6 0-12 3 WV move 7.5 degrees 4 min (FC)
FC No. Setting item Default Setting available range
0C Mixing Valve operation time 60 30 - 240 sec
59 Mixing Valve control time 4 1 - 30 min
Right terminal on the
main remote control
DP_SW01,02=”ON”
(DP_SW03,04=“OFF”)
Connecting terminal on
the remote controller