Danfoss One®
Troubleshooting
VÅIOG102
Danfoss Heating Solutions
Symptom
Possible cause
Solution
The room temperature is too
low in
a single
room (radiator
heating).
The dirt trap is blocked.
If the room has never been
able to reach the desired tem-
perature, it may be due to an
incorrectly dimensioned heat
source:
• The radiator is too small.
• Insufficient hydronic bal-
ancing -> insufficient flow
to radiator or floor heating
circuit.
Contact your installer.
• Install a larger radiator.
• Contact your installer for
proper hydronic balancing
and the correct presetting of
the radiator valve.
The room temperature is too
low in
a single
room (room
sensor)
If the room has never been
able to reach the desired tem-
perature, it may be due to an
incorrectly dimensioned heat
source:
• The radiator is too small.
• Insufficient hydronic bal-
ancing -> insufficient flow
to radiator or floor heating
circuit.
The room sensor has been
shut off (the display is blank/
off).
• Install a larger radiator.
• Contact your installer for
proper hydronic balancing
and the correct presetting of
the radiator valve.
Press the small button at the
top of the room sensor to re-
activate heating in the room.
Also refer to section:
Does the
Danfoss One® system have a
tamper-proof lock?
The battery life is less than 2
years
Rechargeable batteries are
being used.
Old batteries (batteries also
have an expiry date).
Unstable wireless network.
Defective product.
Switch to non-rechargeable
alkaline batteries.
Switch to non-rechargeable
alkaline batteries.
Contact your installer.
If the wireless network is
unstable, the room device
will communicate more often
than normal, resulting in in-
creased battery consumption.
If you believe you have a de-
fective product, contact your
installer.