Nibe SHB 20
15 fault codes documented
Additional heat blocked symbol — Auxiliary heat prevented from running
This symbol indicates that the additional heat source in the system is blocked from operating, typically due to mode selection, scheduling, or alarms.
Alarm bell appears on display — System malfunction alert
An alarm bell symbol indicates that a malfunction has occurred. The control module will usually show instructions on the display to fix it.
Compressor blocked symbol — Compressor prevented from running
This symbol appears when the compressor in the outdoor unit is intentionally blocked from operating, often due to selected operating modes or alarms.
Cooling active symbol — Cooling function is currently enabled
This symbol indicates that the cooling function of the system is currently active and providing cooling.
Display is not lit — No power or system error
If the display is completely blank, there may be a power issue or a significant system fault preventing it from turning on.
ERS symbol displayed — Required additional equipment ERS is needed or active
This symbol indicates that the ERS (Energy Recovery System) accessory is required for certain functions or is currently active in the system.
Fan speed changed symbol — Fan speed is different from normal setting
This symbol appears when the actual fan speed deviates from the standard or normally set speed, possibly due to specific operating conditions or manual adjustments.
Holiday setting symbol active — Holiday mode is enabled
This symbol indicates that the 'holiday setting' is currently active, which typically adjusts heating and hot water to save energy while you are away.
Hot water symbol displayed — Periodic increase or lux mode for hot water is active
This symbol appears when a special mode for hot water is activated, such as a periodic increase in temperature or a 'lux' mode.
Low hot water temperature or no hot water — Check settings and supply
This issue can occur if the hot water system settings are incorrect, or if there are problems with the water supply or heating components.
Low room temperature — Check heating settings and room thermostats
If the room temperature is consistently low, it may be due to incorrect heating control settings, thermostats being turned down, or issues with the heating curve.
MyUpway connection symbol displayed — Controller has contact with MyUpway
This symbol indicates that the controller is successfully connected to the MyUpway service, allowing for remote monitoring and control.
Pool heating symbol displayed — Pool heating is active
This symbol indicates that the pool heating function is currently active, utilizing the system to heat a connected swimming pool.
Red status lamp continuously — Malfunction detected
The status lamp changes from green to red, and an alarm bell appears on the display. This indicates a malfunction that the system cannot fix itself.
Solar heating symbol displayed — Solar heating is active
This symbol indicates that the solar heating function is currently active, meaning the system is utilizing solar energy for heating.