Toshiba HWS-G2601ENXR-E - Page 58

Domestic Hot Water Heat Pump Service Manual
57
Code
Set point
name
Description
Range
Factory
setting
D27
SG
Ready
The SG ready function can be activated by the installer here. Three
possible modes can be selected. This function allows the start of the heat
pump from an external access (See QA1 in Figure 16).
SG ready is not active if there is not external input (SG1 OFF, SG2 OFF).
OFF
OFF
The heat pump and electric heater must start, if below the max water
temperature allowed in the tank. Both Heat Pump and Electric heater are
forced to operate (SG1 ON and SG2 ON).
SG BOOST
The heat pump operates minimizing costs, only the heat pump is activated
(SG1 OFF, SG2 ON).
SG ECO
The unit can be stopped even if there is a need for hot water (SG1 ON,
SG2 OFF).
SG BLOCK
D28
Cooling 1
The fan and heat pump run until the additional temperature sensor, BT5,
placed in the room environment is below a certain level. The water
temperature can only reach the maximum temperature allowed in the tank
D33 (T HP max). The cooling function activates a three-way damper, which
directs the cold exhaust air to a room with cooling requirements. The two
functions operate the damper in opposite directions
Cooling1 /
Cooling2
Cooling1
Cooling 2
Cooling 1 (2). If BT5 is higher than B10 T Cooling, the extra relay that
operates the damper (GP1) switches ON (OFF).
If BT5 is lower than B10 (T Cooling), the extra relay that operate the
damper (GP1) switches OFF (ON).
D29
OFF
Normal operation.
OFF/
Hygrostat/
Ventilation
Max/
Start-Stop
OFF
Hygrostat
The fan always runs according to the input signal in GC1 (0-10V) from an
external hygrostat, CO
2
– sensor or similar appliances.
1. If the voltage is between 0-3.0V the fan speed id D5 (Fan min speed)
2. If the voltage is between 3.0-8.0V the fan speed is D4 (Fan medium
speed)
3. If the voltage is higher than 8V the fan speed is D3 (Fan max speed)
Ventilation
max
If the ventilation function is already selected,
a signal higher of 2V to GC1 leads to maximum air flow.
Start/
Stop
If GC1 receives a signal higher than 2V, the unit operation is stopped.
D30
Filter
timer
The filter function is activated (ON) or deactivated (OFF).
OFF/ON
OFF
D31
Filter timer
time
If the filter function is ON then the timer of the filter can be selected. This
set point determines the number of months after which the filter alarm is
displayed.
0 -12
3
D32
Filter
reset
Once the air filter has been replaced, activate this function to reset the
filter timer.
OFF/ON
OFF
D33
Temp HP
max
The maximum water temperature that can be reached by the heat pump
in °C .
50-65
60