Toshiba HWT-601XWHM3W-ETR Service Manual page 78

Item
7-3. 7-4)Cooling thermostat operation
Hydro Unit Control
When the cooling thermostat does not reach the assigned temperature (the circuit between (2) and (5) is open),
cooling starts under the setting that water temperature for cooling is 20°C (DN_96). 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 (5) 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.
Room thermostat
Related DN
Operation flow and applicable data, etc.
Correction control
Setting is corrected
CLOSE
upward
Setting is corrected
OPEN
downward.
DN
Initial water temperature setting when controlling
9D heating by the room temperature remote controller and
room temperature thermostat.
Initial water temperature setting when controlling
96 cooling by the room temperature remote controller and
room temperature thermostat.
Choose of the initial setting temperature.
Either use the temperature set in DN_9D, or use the
B5
temperature calculated by Auto curve.
This applies heating operation only.
Heating operation
Thermo on
The water temperature setting is turned
up by 1 degree every 30 minutes.
Thermo off
The water temperature setting is turned
down by 1 degree every 30 minutes.
Setting item
77
Cooling operation
Thermo off
The water temperature setting is turned
up by 1 degree every 30 minutes.
Thermo on
The water temperature setting is turned
down by 1 degree every 30 minutes.
Default Variable range
40 20 - 55 (65) °C
20 5 - 30°C
0 : Use the temperature
set in DN_9D
0 1 : Use the temperature
calculated by Auto curve
* ( ): 801, 1101