Nibe F2050-10 - Disturbances in comfort; Troubleshooting; F2050 DOES NOT START; F2050 NOT COMMUNICATING

In most cases, the indoor module/control module notes a
malfunction (a malfunction can lead to disturbance in com-
fort) and indicates this with alarms and action instructions
in the display.
Troubleshooting
NOTE
In the event of action to rectify malfunctions that
require work within screwed hatches, the incoming
supply electricity must be isolated at the safety
switch by or under the supervision of a qualified
electrician.
Caution
Alarms are acknowledged on the indoor module /
control module (VVM / SMO).
If the operational interference is not shown in the display
the following tips can be used:
BASIC ACTIONS
Start by checking the following:
• All supply cables to the heat pump are connected.
• Group and main fuses of the accommodation.
• The property's earth circuit breaker.
• The heat pump’s fuse / automatic protection. (FC1 / FB1,
FB1 only if KVR is installed.)
• The indoor module’s/control module’s fuses.
• The indoor module’s/control module’s temperature lim-
iters.
• That the air flow to F2050 is not blocked by foreign ob-
jects.
• That F2050 does not have any external damage.
F2050 DOES NOT START
• There is no demand.
– The indoor module/control module does not call on
heating, cooling or hot water.
• Compressor blocked due to the temperature conditions.
– Wait until the temperature is within the product’s work-
ing range.
• Minimum time between compressor starts has not been
reached.
– Wait for at least 30 minutes and then check if the com-
pressor has started.
• Alarm tripped.
– Follow the display instructions.
F2050 NOT COMMUNICATING
• Check that the addressing of F2050 is correct.
• Check that the communication cable is correctly connec-
ted and working.
LOW HOT WATER TEMPERATURE OR A LACK OF
HOT WATER
Caution
The hot water is always set on the indoor module
(VVM) or the control module (SMO).
This part of the fault-tracing chapter only applies if the heat
pump is docked to the hot water heater.
• Large hot water consumption.
– Wait until the hot water has heated up.
• Incorrect hot water settings in indoor module or control
module.
– See the Installer Manual for the indoor module/control
module.
• Clogged filterball.
– Switch off the system. Check and clean the filterball.
LOW ROOM TEMPERATURE
• Closed thermostats in several rooms.
– Set the thermostats to max in as many rooms as pos-
sible.
• Incorrect settings in indoor module or control module.
– See the Installer Manual for the indoor module/control
module.
• Air-filled radiators/underfloor heating coils.
– Bleed the system.
HIGH ROOM TEMPERATURE
• Incorrect settings in indoor module or control module.
– See the Installer Manual for the indoor module/control
module.
LARGE AMOUNT OF WATER BELOW F2050
• The accessory KVR 10 is required.
• If KVR 10 is installed, check that the water drainage can
flow freely.
37Chapter 10 | Disturbances in comfortNIBE F2050
Disturbances in comfort