Nibe F1145 series User Manual

• Too low hot water setting.
– Enter menu 2.2 and select a higher comfort mode.
• Too low or no operating prioritisation of hot water.
– Enter menu 4.9.1 and increase the time for when
hot water is to be prioritised. Note that if the time
for hot water is increased, the time for heating pro-
duction is reduced, which can give lower/uneven
room temperatures.
LOW ROOM TEMPERATURE
• Closed thermostats in several rooms.
– Set the thermostats to max, in as many rooms as
possible. Adjust the room temperature via menu
1.1, instead of choking the thermostats.
• Too low set value on the automatic heating control.
– Enter menu 1.1 "temperature" and adjust the offset
heating curve up. If the room temperature is only
low in cold weather the curve slope in menu 1.9.1
"heating curve" needs adjusting up.
• F1145 in incorrect operating mode.
– Enter menu 4.2. If mode "auto" is selected, select a
higher value on "stop heating" in menu 4.9.2.
– If mode "manual" is selected, select "heating". If this
is not enough, select "addition".
• Too low or no operating prioritisation of heat.
– Enter menu 4.9.1 and increase the time for when
heating is to be prioritised. Note that if the time for
heating is increased the time for hot water produc-
tion is reduced, which can give smaller amounts of
hot water.
• "Holiday mode" activated in menu 4.7.
– Enter menu 4.7 and select "Off".
• External switch for changing the room heating activ-
ated.
– Check any external switches.
• Air in the climate system.
– Vent the climate system (see page 31).
• Closed valves to the climate system.
– Open the valves.
HIGH ROOM TEMPERATURE
• Too high set value on the automatic heating control.
– Enter menu 1.1 (temperature) and reduce the offset
heating curve. If the room temperature is only high
in cold weather the curve slope in menu 1.9.1
"heating curve" needs adjusting down.
• External switch for changing the room heating activ-
ated.
– Check any external switches.
UNEVEN ROOM TEMPERATURE.
• Incorrectly set heating curve.
– Fine-tune the heating curve in menu 1.9.1
• Too high set value on "dT at DOT"..
– Enter menu 5.1.14 (flow set. climate system) and
reduce the value of "dT at DOT".
• Uneven flow over the radiators.
– Adjust the flow distribution between the radiators.
LOW SYSTEM PRESSURE
• Not enough water in the climate system.
– Top up the water in the climate system (see page
31).
COMPRESSOR DOES NOT START
• There is no heating requirement.
– F1145 does not call on heating or hot water.
• Compressor blocked due to the temperature condi-
tions.
– Wait until the temperature is within the product’s
working range.
• Minimum time between compressor starts has not
been reached.
– Wait for at least 30 minutes and then check if the
compressor has started.
• Alarm tripped.
– Follow the display instructions.
WHINING NOISE IN THE RADIATORS
• Closed thermostats in the rooms and incorrectly set
heating curve.
– Set the thermostats to max. in as many rooms as
possible. Adjust the heating curve via menu 1.1, in-
stead of choking the thermostats.
• Circulation pump speed set too high.
– Enter menu 5.1.11 (pump speed heating medium)
and reduce the speed of the circulation pump.
• Uneven flow over the radiators.
– Adjust the flow distribution between the radiators.
GURGLING SOUND
This part of the troubleshooting chapter only applies if
the NIBE FLM accessory is installed.
• Not enough water in the water seal.
– Refill the water seal with water.
NIBE F1145Chapter 10 | Disturbances in comfort66

Nibe F1145 series Specifications

General

Brand	Nibe
Model	F1145 series
Category	Heat Pump
Language	English