10
8 Troubleshooting
Provided there is enough voltage, the eTRV will still operate. Depending on
the load, it may still be possible to send commands.
If the voltage drops too far during a command, the low battery symbol
(
Prg
Of
fset
AUT
O
MANU
BOOST
Mo
Tu W
e
Th Fr Sa Su
0
6
12
18
24
Start Ende
) and error code will be displayed on the device (see section 8.4). In this
instance, the batteries must be replaced.
8.1 Low batteries
If at least one device does not accept a command, the LED
(B)
will light
up red. This may be caused by radio interference (see section 11). Other
possible issues may be:
The duty cycle is a legally regulated limit of the transmission time of
devices in the 868 MHz range. The aim of this regulation is to safeguard
the operation of all devices working in the 868 MHz range. In the 868 MHz
frequency range we use, the maximum transmission time of any device is
1% of an hour (i.e. 36 seconds in an hour). Devices must cease transmission
when they reach the 1% limit until this time restriction comes to an end.
Warmup devices are designed and produced with 100% conformity to this
regulation. During normal operation, the duty cycle is not usually reached.
However, intensively repeated device pairing processes may mean that this
limit is reached in isolated instances during commissioning.
IMPORTANT:
If the duty cycle limit is exceeded, the device may stop working
for a brief period. The device will start working normally again after a short
period (max. 1 hour).
8.2 Command not confirmed
8.3 Duty cycle
•
Device cannot be reached.
•
Device is unable to execute the command (load failure, mechanical
block, etc.).
•
Device is defective.
8.4 Error codes and flashing sequences
Flashing code
Meaning
Solution
F1
Valve drive slow
Check whether the valve pin
is stuck.
F2
Actuating range too wide
Check the fastening of the
eTRV
F3
Adjustment range too
small
Check whether the valve pin
is stuck.
Battery symbol
(
Prg
Of
fset
AUT
O
MANU
BOOST
Mo
Tu W
e
Th Fr Sa Su
0
6
12
18
24
Start Ende
)
Battery low
Replace the eTRV batteries
Battery symbol
(
Prg
Of
fset
AUT
O
MANU
BOOST
Mo
Tu W
e
Th Fr Sa Su
0
6
12
18
24
Start Ende
) and ---
Valve moved to error
position*
Replace the eTRV batteries
*If batteries are not replaced, the eTRV valve will move to a “valve error position”. This
means the target temperature in the room cannot be reached due to a low battery. A
valve error position of 15 % open is set in the factory settings.
Antenna
symbol (
Prg
Offset
AUTO
MANU
BOOST
Mo Tu We Th Fr Sa Su
0
6
12
18
24
Start
Ende
)
flashing
Communication problem
with SmartHub or
connected device
Check the connection
with the SmartHub or the
connected devices.
Lock symbol (
Prg
Offset
AUTO
MANU
BOOST
Mo Tu We Th Fr Sa Su
0
6
12
18
24
Start
Ende
) Operating lock activated
Deactivate the operating lock
in the app.
Short orange
flashing
Radio transmission/
attempting to transmit/
configuration data is
transmitted
Wait until the transmission is
completed.