Nibe F1155 Heat Pumps
27 fault codes documented
AUX output configured for specific function
The AUX output on terminal block X7 can be configured for various functions like buzzer alarm indication or pump control. An accessory card may be needed for multiple simultaneous functions.
Additional heat blocked symbol — Immersion heater is not running
This symbol appears when the additional heat source, likely the immersion heater, is blocked from operating. This could be due to the selected operating mode, scheduled blocking, or an active alarm.
Alarm bell icon on display — An alarm condition is active
This symbol appears in the information window when a malfunction has occurred. It signifies that the heat pump has detected an issue that needs attention.
Brine level monitored by NV 10 accessory
The NV 10 accessory can monitor the level, pressure, and flow of the brine in the system. This connection is made to the input card.
Circulation pump stopped — Pump is not running
If a circulation pump (GP1 or GP2) has stopped, it can lead to issues such as low room temperature. This may require manual intervention to restart.
Compressor blocked symbol — Compressor is not running
This symbol indicates that the heat pump's compressor is currently blocked or not operating. This can happen if the operating mode is set incorrectly, if blocking is scheduled, or if an alarm is active.
Cooling operation parameters configured
Settings for passive and active cooling modes, including start times, compressor speed, and mixing valve behavior, can be adjusted when cooling is activated.
External adjustment active or configured
An external switch can be connected to change the supply or room temperature. This setting allows for remote temperature control.
External operating voltage connected for control system
External operating voltage (1x230V+N+PE) can be connected to the control system via the immersion heater circuit board. Specific terminal connections are required.
External sensor connected and configured
Various external sensors (outside temperature, hot water, etc.) can be connected to the heat pump. The correct input and function must be selected in the menu.
Fan return time for temporary speed change set
This setting determines how long a temporary fan speed change will remain active before returning to the normal speed. It requires an accessory.
Fan speed controlled by external contact
An external contact can activate a specific fan speed for the ventilation system. This requires the FLM accessory to be installed.
Fan speed symbol — Fan speed has changed from normal setting
This symbol indicates that the speed of the heat pump's fan has changed from its standard setting. This requires the NIBE FLM accessory to be installed.
Holiday mode symbol — 'Holiday setting' is activated
This symbol indicates that the 'Holiday mode' (or 'Holiday setting') has been activated in menu 4.7. This mode typically reduces heating output to save energy while you are away.
Incorrect phase sequence — Compressor will not start
If the electrical connections for the heat pump are made with the incorrect phase sequence, the scroll compressor will not start. An alarm will be displayed in this situation.
Info symbol next to information sign — There is important information to note
This symbol appears next to the information sign if there is noteworthy information in menu 3.1. This information can help in finding the source of a fault.
Load monitor controlling electrical addition
The heat pump has integrated load monitors to manage the electrical addition's power usage. It redistributes power or disengages the addition if the property's main fuse risks tripping due to overload.
Low hot water temperature or lack of hot water — Water heater issues
If you are experiencing low hot water temperature or no hot water, several factors related to the hot water heater and heat pump settings could be the cause.
Low room temperature — Heating system issues
If the room temperature is lower than expected, it could be due to thermostat settings, the heat pump's operating mode, heating curve settings, or prioritisation settings.
NIBE Uplink network connection established
The heat pump can be connected to a network for remote monitoring and control via NIBE Uplink. A standard network cable is used for the connection.
NIBE Uplink symbol — Heat pump has contact with NIBE Uplink™
This symbol indicates that the NIBE F1155 heat pump is successfully communicating with the NIBE Uplink™ service. This allows for remote monitoring and control.
Red status light continuously — Malfunction detected
The status light changes from solid green to solid red, indicating a malfunction has occurred. An alarm bell icon will also appear in the information window. The heat pump cannot fix this issue on its own.
Red status lamp — A serious malfunction has occurred
A continuously red status lamp indicates that a malfunction has occurred which the heat pump cannot resolve by itself. An alarm message will also appear on the display.
Room temperature sensor settings configured
Settings related to room temperature sensors for heating and cooling modes can be adjusted. These options appear when sensors are installed and activated.
Software update needed or in progress
The heat pump can update its software via a USB stick. This is used to add new features or fix issues. A new menu (menu 7) appears when a USB stick is connected.
Solar heating symbol — Solar heating is active
This symbol indicates that solar heating is currently active. This feature requires a specific accessory to be installed.
Temporary hot water boost activated
An external contact can be used to activate the 'temporary lux' hot water function for a set duration.