Table of Contents
SC FC Error display
A01 815 Low loss
header
sensor
faulty.
A01 816 No
communicati
on with
UBA/MC10,
DBA, UBA-
H3, HM10 or
MCM10.
A01 828 Water
pressure
sensor is
defect.
A02 816 No
communicati
on with
BC10.
A11 801 Internal
error
A11 802 Time is not
yet set.
A11 803 Date is not
yet set.
Table 23 Fault table
Logamatic EMS – 6 720 801 387 (2011/05)
Effect on control
characteristics
This may result in the
following heating circuits
receiving insufficient
heat.
The boiler no longer
receives heat demand
signals; the heating
system may no longer
generate heat.
BC10 settings are no
longer adopted by RCxx
devices.
Heating system is in
emergency mode.
Restricted functionality
for:
• All switching
programs
• Fault displays
Restricted functionality
for:
• All switching
programs
• Holiday function
• Fault displays
Troubleshooting
Possible cause
Temperature sensor
is incorrectly
connected or
fitted.Breakage or
short circuit in the
sensor lead.
Temperature sensor
is faulty.
EMS BUS system is
overloaded.
UBA3/MC10, DBA,
UBA-H3, HM10 or
MCM10 is defective.
Digital water
pressure sensor is
faulty.
Contact problem on
BC10 or BC10 is
faulty.
Internal runtime error
in the RC35.
Time details are
missing, e.g. due to
lengthy power failure.
Date details are
missing, e.g. due to
lengthy power failure.
10
Remedy
B Check sensor
connection and
sensor lead.
B Check sensor
mounting.
B Compare
resistance values
with the sensor
curve.
B Reset by
switching the
heating system
ON and OFF.
B If necessary inform
your local service
centre.
B Replace the water
pressure sensor.
B Check BC10
connection.
B Replace BC10 if
required.
B RC35Replace .
B Enter the current
time.
B Enter the current
date.
55
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