Appendix
0020253110_01 Operating and installation instructions
17
Setting level
Values
Unit
Increment, select
Default
setting
Min.
Max.
Button lock
off
,
On
Off
Preferred display
Heating
,
Cooling
Heating
Basic settings
→
Offset
→
Room temperature
-3.0
3.0
K
0.5
0.0
Basic settings
→
Enter zone name
→
ZONE1
1
10
A to Z, 0 to 9, space
ZONE1
Installer level
→
Enter code
000
999
1
000
A.3 Troubleshooting
Symptom
Possible cause
Measure
Display remains dark
The batteries are flat
1. Change all the batteries. (
→
Page 8)
2. If the fault persists, inform the competent
person.
No changes in the
display when the
rotary knob is turned
Software error
1. Take all the batteries out.
2. Insert the batteries in the battery compart-
ment, making sure that the poles are the
right way round.
3. If the fault persists, inform the competent
person.
No changes in the
display via the se-
lection buttons are
pressed
Software error
1. Take all the batteries out.
2. Insert the batteries in the battery compart-
ment, making sure that the poles are the
right way round.
3. If the fault persists, inform the competent
person.
Display view:
No RF
communication
The reception strength
is too weak
1. Take the remote control to the radio
receiver unit and see if the reception
strength increases.
2. If the reception strength is greater than
4, have the competent person install the
remote control in a different location.
3. If the reception strength when directly next
to the radio receiver unit is less than 4,
switch off the mains switch for all the heat
generators and then wait approximately 1
minute before switching it back on.
4. If the fault persists, inform the competent
person.
Display view:
Change
batteries
The batteries are al-
most flat
1. Change all the batteries. (
→
Page 8)
2. If the fault persists, inform the competent
person.
