Mitsubishi HMA100V Technical Manual page 105

Menu 9.3.11 [S] Supply pump exer.
Pump operation can be deactivated here. Pump is in operation
for 2 minutes 12 hours after last operation.
Setting range: Off, On
Default value: On
Menu 9.3.12 [S] Supply diff HP
When the current supply water temperature deviates from the
set value compared to that calculated, the heat pump is forced
to stop/start irrespective of the degree-minute value.
Heating mode: If the current supply water temperature exceeds
the calculated supply water by set value, the degree minute
number is set to 1. The compressor stops when there is only a
heating requirement.
If the current supply water temperature drops below the
calculated temperature by set value, the degree minute number
is overwritten to smaller value set in Menu 9.1.1 by 1. This
means that the compressor will start.
Cooling mode: If the current supply water temperature drops
below the calculated supply by set value, the degree minute
number is set to -1. The compressor stops when there is only a
cooling requirement.
Setting range: 3 – 25 °C
Default value: 10 °C
Menu 9.3.13 [S] Diff HP add. heat
If electric heater is permitted to use (Menu 8.2.1) and the
current supply water temperature falls below the calculated
temperature by the set value plus the value from Menu 9.3.12,
the degree minute value is overwritten to bigger value set in
Menu 9.2.1 by 1. When the compressor has reached full speed,
the degree minute value is set to the value in Menu 9.2.1 and
electric heater is permitted. This means that the electric heater
can cut in immediately.
Setting range: 1 – 8 °C
Default value: 3 °C
Menu 9.3.14 [S] Block HW/Heating
If heating or hot water are not required, they can be deselected
here.
Operating mode Hot water or Add. heat only will be selectable
if heating is deselected.
Setting range: No HW, No heating, HW+Heating
Default value: HW+Heating
Menu 9.3.15 [S] Heat drop at alarm
Here you select whether heat production is to be reduced in the
event of an alarm.
Setting range: Yes, No
Default value: Yes
Menu 9.3.16 [S] Type of HW sensor
Here you can select whether to use hot water sensors that
manage higher temperatures (above 90 °C) or not.
Standard: Standard setting
High temp: Calculation for HW jacket sensor (BT6), Addition
sensor (BT19) as well as supply sensor (BT2) are replaced to
suit a sensor that manages higher temperatures (up to 110 °C).
Used if new sensor is installed in connection with installation
of solar heating.
Setting range: Standard, High temp
Default value: Standard
Menu 9.3.17 [S] Freeze protection HX
Select here whether water heat exchanger anti freeze is to be
active or not.
Setting range: On, Off
Default value: On
Menu 9.3.18 [S] Return
Return to Menu 9.3.0.
Menu 9.4 [S] Quick start
If "Yes" is selected, the compressor starts in the heat pump
within 4 minutes if there is a demand. However, there is always
a 30 minute compressor start delay if the power supply has
been switched off.
Setting range: No, Yes
Default value: No
Menu 9.5.0 [S] System info
The sub menus to this menu contain information that is used
when troubleshooting.
Only for service personnel.
Menu 9.5.1 [S] Heat pump type
The type of connected heat pump is shown here.
Menu 9.5.2 [S] Cpu usage percent
The CPU load is shown here.
Menu 9.5.3 [S] Com rate/1000
The number of communication retransmissions is shown here.
Menu 9.5.4 [S] Unit w. com. problem
Any communication problems that a unit may have are shown
here as well as the relevant unit.
Menu 9.5.5 [S] Run time add. heat
The accumulated running time for the electric heater since the
first start is shown.
Menu 9.5.6 [S] Run time hot water
The accumulated operating time in hours for hot water pro-
duction with compressor since the first start-up is shown here.
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'10 • HM-T-149
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