Toshiba HWS-P804XWHM3-E1(TR) Service Manual page 38

Item
8-2. The following shows the operation modes and controlled objects.
Operation Mode
Operation
and Control
Method
Controlled
object
Heat pump
Backup
heater
Hot water
cylinder
heater
2) Hot water supply operation
1) Operation start condition
2) Operation mode determination
3) Operation stop
*1: When the outside temperature is -25 °C or below, the heater
operation is selected even if the TTW temperature falls into
"a zone".
*2: When "Hot water supply" and "Heating" are simultaneously in
operation, the heater operation may be selected depending on
the outside air temperature.
Related FC
FC No.
1E
1F
20
21
24
25
*3:When the outside temperature is 0 °C or below, the boil-up temperature will be higher that setting temperature in hot
water supply mode.
AMP Air Conditioning
Operation flow and applicable data, etc.
mode
Hot
Cooling Heating water
only only supply
only
O O O
× O ×
× × O
When the [HOT WATER] remote controller button is pressed
and the following operation start condition is met, the operation
starts.
• TTW < 38 °C is detected.
An operation mode is determined according to the temperature
of TTW sensor.
• Heat pump operation selection *1 *2
• When TTW < 38 °C (a zone in the right figure) is met, the
heat pump operation is selected.
• Heater operation selection
When 45 °C ≤ TTW < TSC_H (b zone in the right figure) is
met, the heater operation is selected.
• Thermostat status "OFF" selection
When TTW ≥ TSC_H is met, the thermostat status "OFF" is
selected.
The operation stops in the following cases.
• The remote controller gives a stop instruction.
• TTW ≥ TSC_H is met.
Setting item
Upper limit of hot water supply temperature
Lower limit of hot water supply temperature
Heat pump start temperature
Heat pump end temperature
Outside air correction start temperature for hot water supply*
Outside air correction temperature for hot water supply*
Heating and Hot water both operate
Heat pump select
Heat pump select
for hot water
for heating
supply
Hot Hot
Heating water Heating water
side supply side supply
side side
O × ×
O × ×
× O ×
(Temperature set with
remote controller)
HP_H OFF 45 °C
HP_H ON 38 °C
Default
75 °C
40 °C
38 °C
45 °C
3
0 °C
3
3 degree
37
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Cooling and Hot water both operate
Heat pump select
Heat pump select
for hot water
for cooling
Hot
Cooling water Cooling
side supply side
side
O O × ×
× × × ×
O × O ×
O Possible
×
TTW sensor
(Hot water cylinder unit)
TTW
TSC_H
Thermostat OFF c Zone
Heater operation
b Zone
Heat pump
operation
a Zone
TSC_H is hot water temperature
set with remote controller
Setting available range
60-80 °C
40-60 °C
20-45 °C
40-50 °C
-20-10 °C
0 -15 degree
supply
Hot
water
supply
side
O
×
O
Not possible