Troubleshooting Disturbances In Comfort; Basic Actions; Low Hot Water Temperature Or A Lack Of Hot Water; Low Room Temperature - Nibe F2040 Technical Manual

6 Troubleshooting
Disturbances in comfort
NOTE
Work behind covers secured by screws may
only be carried out by, or under the supervision
of, a qualified installation engineer.
NOTE
As F2040 can be connected to a large number
of external units, these should also be checked.
NOTE
In the event of action to rectify malfunctions
that require work within screwed hatches the
incoming electricity must isolated at the safety
switch.
There is no danger in acknowledging an alarm because
as long as the cause remains the alarm will return.
Alarm codes are displayed in the connected indoor
unit, see alarm list for connected indoor unit.
The following tips can be used to rectify the interfer-
ence:

Basic actions

Start by checking the following possible fault sources:
That the heat pump is running or that the supply
■
cable to F2040 is connected.
Group and main fuses of the accommodation.
■
The property's earth circuit breaker.
■
The heat pump's motor circuit breaker (F).
■
Low hot water temperature or a lack of hot
water
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 settings in the NIBE indoor module.
■
See the manual for the indoor module.
■

Low room temperature

Closed thermostats in several rooms.
■
Set the thermostats to max in as many rooms as
■
possible.
External switch for changing the room heating activ-
■
ated.
Check any external switches.
■
Incorrect settings in NIBE SMO or NIBE indoor module
■
See the manual for the indoor module.
■

High room temperature

External switch for changing the room heating activ-
■
ated.
Check any external switches.
■
Incorrect settings in NIBE SMO or NIBE indoor module
■
NIBE™ F2040
See the manual for the indoor module.
■

F2040 is not operational

F2040 communicates all alarms to the indoor module.
Ensure that the F2040 is connected to the power
■
source.
Check the indoor module. See section "Disturbances
■
in comfort" in the installation manual for the indoor
module.

F2040 does not communicate

Check that the addressing of F2040 is correct.
■
Check that the communication cable has been con-
■
nected.

Alarm list

Acknowledging alarms

No harm in acknowledging an alarm. If the cause of
the alarm remains, the alarm recurs.
Alarm codes are displayed in the connected indoor
■
unit, see alarm list for connected indoor unit.
NOTE
Recurring alarms mean that there is a fault in
the installation.
Chapter 6 | Troubleshooting 47