In most cases, the main product notes a malfunction (a
malfunction can lead to disturbance in comfort) and in-
dicates this with alarms and shows action instructions
in the display.
If the operational interference is not shown in the display
the following tips can be used:
BASIC ACTIONS
Start by checking the following items:
• That the heat pump is operating and the supply cable
to SAM 42 is connected.
• Group and main fuses of the accommodation.
• The property's earth circuit breaker.
LOW HOT WATER TEMPERATURE OR A
LACK OF HOT WATER
• The heat pump has temporarily prioritised supply air
ventilation to prevent too low temperatures in the
supply air coil.
LOW ROOM TEMPERATURE
• Incorrect value set in supply air automatic control
system.
– Enter menu 5.3.9 (ext sup air md) and adjust the
setting for the supply air temperature.
HIGH ROOM TEMPERATURE
• Incorrect value set in supply air automatic control
system.
– Enter menu 5.3.9 (ext sup air md) and adjust the
setting for the supply air temperature.
LOW OR A LACK OF VENTILATION
• Filter (HQ11) blocked.
– Change the filter.
• The ventilation is not adjusted.
– Order/implement ventilation adjustment.
• Supply air device closed, blocked or throttled down
too much.
– Check the supply air inlets.
• Check external frost protection (outdoor air damper).
HIGH OR DISTRACTING VENTILATION
• Filter (HQ11) blocked.
– Change the filter.
• The ventilation is not adjusted.
– Order/implement ventilation adjustment.
LOW SUPPLY AIR TEMPERATURE
• Air in the heating medium system.
– Vent SAM 42 using vent valve (QM20.1) and
(QM20.2).
• Incorrect value set in supply air automatic control
system.
– Enter menu 5.3.9 (ext sup air md) and adjust the
setting for the supply air temperature.
HIGH SUPPLY AIR TEMPERATURE
• Incorrect value set in supply air automatic control
system.
– Enter menu 5.3.9 (ext sup air md) and adjust the
setting for the supply air temperature.
SAM 42Chapter 8 | Disturbances in comfort20
8 Disturbances in comfort
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