Toshiba ESTIA HWS-1501CSHM3-E, Service Manual

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65
8-3.
Hydro Unit Control 7-2) Room temperature thermostat control setting
• Setting of DPSW on the hydro unit
:DP_SW02_4=”ON”(Default“OFF”)
7-3)Heating thermostat operation
When the heating thermostat does not reach the assigned temperature (the circuit between (1) and (3) is closed),
heating starts under the setting that water temperature for heating is 40°C. If the heating thermostat has not reached
the assigned temperature 30 minutes after heating had started, the water temperature setting is turned up 1 degree,
and the same action will be repeated every 30 minutes until the thermostat reaches the assigned temperature. The
backup heater and booster heater are controlled in the same way as in the normal HP operation.
When the heating thermostat reaches the assigned temperature (the circuit between (1) and (3) is open), the heat
pump shifts to the “thermostat off” operation. During the operation, the water temperature setting is turned down by 1
degree every 30 minutes. The backup heater and booster heater are tuned off as the heat pump shifts to the
“thermostat off” operation.
7-4)Cooling thermostat operation
When the cooling thermostat does not reach the assigned temperature (the circuit between (2) and (3) is open),
cooling starts under the setting that water temperature fro cooling is 20°C. If the cooling thermostat has not reached
the assigned temperature 30 minutes after cooling had started, the water temperature setting is turned down 1 degree,
and the same action will be repeated every 30 minutes until the thermostat reaches the assigned temperature.
When the cooling thermostat reaches the assigned temperature (the circuit between (2) and (3) is closed), operation
shifts to the “thermostat off” operation. During the operation, the water temperature setting is turned up by 1 degree
every 30 minutes.
Item Operation flow and applicable data, etc.
PJ17
Terminal label
TCB-PCMO3E
CN210
Red
CN211
Black
Room thermostat Correction control Heating operation Cooling operation
CLOSE
Setting is corrected
upward
Thermo on
The water temperature setting is turned
up by 1 degree every 30 minutes. Thermo off
The water temperature setting is turned
up by 1 degree every 30 minutes.
OPEN
Setting is corrected
downward.
Thermo off
The water temperature setting is turned
down by 1 degree every 30 minutes. Thermo on
The water temperature setting is turned
down by 1 degree every 30 minutes.