Buderus Logamatic EMS User Manual

Troubleshooting
Logamatic EMS RC35 user interface - Subject to technical modifications.52
10
A12 816 No
communi-
cation with
LL header
module.
Heating zone pump 1 is
permanently activated.
WM10 or bus cable
is incorrectly
connected or
faulty.WM10 not
recognized by RC35.
B Check terminals on
WM10 and check
bus cable.
B Replace WM10.
A2x 806 Room
tempera-
ture
for HZx
defective.
Since the actual room
temperature is missing,
the following functions do
not work:
• Room influence
(for outdoor
temperature control)
• Switch point
optimization
In the case of room
temperature control, the
system is regulated to
max. temperature for HZx.
Built-in temperature
sensor on the RC35
controls/remote
control unit is
defective.
B Replace the remote
control unit.
A2x 842 Frost
protection
w/o remote
HZx.
Since the actual room
temperature is missing,
the following functions do
not work:
• Room influence
• Switch point
optimization
EMS operates with the
last values set on the
remote control.
No user interface/
remote control unit
assigned, although
frost protection is set
to room temperature.
B Check the operating
unit parameter.
B Change frost
protection to
outdoor temperature
if needed.
A2x 843 Room
control
w/o remote
HZx.
No RC35 user
interface/remote
control unit assigned,
although room
temperature
controlled is set.
B Check the operating
unit parameter.
B Change to outdoor
temperature
controlled if needed.
SC FC
Fault
message
Effect on control
characteristics Possible cause Remedy
Tab. 21 Fault table

Buderus Logamatic EMS Specifications

General

Brand	Buderus
Model	Logamatic EMS
Category	Network Router
Language	English