Nibe SAM S42 - Disturbances and Troubleshooting; Troubleshooting Guide

In most cases, the main product notes a malfunction (a
malfunction can lead to disturbance in comfort) and indic-
ates this with alarms and shows action instructions in the
display.
Troubleshooting
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 S42 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
• Incorrectly set values for the supply air temperature.
– Enter menu 7.2.9 - "Supply air module (SAM)" and adjust
the setting for the supply air temperature.
HIGH ROOM TEMPERATURE
• Incorrectly set values for the supply air temperature.
– Enter menu 7.2.9 - "Supply air module (SAM)" and adjust
the setting for the supply air temperature.
LOW OR A LACK OF VENTILATION
• Supply air filter (HQ11) clogged.
– 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.
• Fan speed in reduced mode.
– Enter menu 1.2.1 - "Fan speed" and select "Normal"
• External switch for changing the fan speed activated.
– Check any external switches.
• Check external frost protection (outdoor air damper).
HIGH OR DISTRACTING VENTILATION
• Supply air filter (HQ11) clogged.
– 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.
• Fan speed in forced mode.
– Enter menu 1.2.1 - "Fan speed" and select "Normal"
• External switch for changing the fan speed activated.
– Check any external switches.
• Silencers not correctly installed.
– Check the silencers.
LOW SUPPLY AIR TEMPERATURE
• Air in the heating system.
– Vent SAM S42 using vent valve (QM20.1) and (QM20.2).
• Incorrectly set values for the supply air temperature.
– Enter menu 7.2.9 (Supply air module (SAM)) and adjust
the setting for the supply air temperature.
HIGH SUPPLY AIR TEMPERATURE
• Incorrectly set values for the supply air temperature.
– Enter menu 7.2.9 (Supply air module (SAM)) and adjust
the setting for the supply air temperature.
21Chapter 8 | Disturbances in comfortSAM S42
Disturbances in comfort