Toshiba ESTIA HWS-1501CSHM3-E, Service Manual

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53
8-2.
Operation Mode
and Control
Method 7-2) Boiler-output control
• I zone: heat pump operation
Normally the heat pump operation is executed in the zone.
• J zone: heat pump operation and boiler operation *1
In the zone, the heat pump + boiler operation (*2) is executed and the heater operation is executed in the hot-water-
supply side.
*2:Operation mode is not changed with the outside temperature when an external signal to control the limit of heat
pump limit operation (see 3-9) is input.
7-3) Boiler output limit control
The boiler power output is limited depending on the settings of boiler position (DPSW02_1) and FC62.
7-4) A02 error detection while the boiler is running
A02 error detection is deactivated depending on the settings of FC62 and whether the boiler is installed or not
(DPSW13_2).
*1 If a user runs the boiler under the condition that no limit has been set, and hot water from the boiler has damaged parts
inside of the hydro unit, the user is fully responsible for the damage.
Related FC
Item Operation flow and applicable data, etc.
E
-10
I zone
J zone
Heat pump
operation
Heat pump &
boiler operation
TO
Diff : 5K
Boiler position
(DPSW02_1)
FC62
(Activate/deactivate A02 error
detection)
Temperature range in which the boiler signal is output
(Detected temperature of TWI, TWO or THO)
0
(After 3-way valve, heating side)
0 TWI or TWO or THO<58°C
1 TWI or TWO or THO<58°C
0
(Before 3-way valve)
0 TWI or TWO or THO<70°C
1 No limit *1
Boiler is installed or not
(DPSW13_2)
FC62
(Activate/deactivate A02
error detection)
Temperature recognized as A02 error
(Detected temperature of TWI, TWO or
THO)
0
(Not installed)
0 TWI or TWO or THO 70°C (Beep)
1 TWI or TWO or THO 70°C (Beep)
1
(Installed)
0 TWI or TWO or THO 70°C (Beep)
1 No error detection *1 (No beep)
FC No. Setting item Default Variable range
23 Boiler-heat pump switching temperature -10°C -20-20°C
3E Control priority between the hydro unit and boiler
(Control valid for operating heat pump mode) 0: Hydro unit control Independent temperature
control for the hydro unit
and boiler
5B Coordination of the boiler and heat pump 0: Boiler and Heat pump 1: Boiler only
2: Heater only
62 Activate/deactivate A02 error detection 0: Activate 1: Deactivate