Operating instructions

Logamatic EMS RC35 programming unit - Subject to technical modifications
49
Troubleshooting
10
A01 810 DHW stays
cold.
The system
continuously tries to
heat the DHW cylinder
to the set DHW
temperature.
Priority DHW is
switched off once the
error message has
been displayed.
Constant drawing or
system leak.
B Stop any leaks.
Temperature sensor is
incorrectly connected
or fitted.
Breakage or short cir-
cuit in the sensor lead.
Temperature sensor
faulty.
B Check sensor
connection and
sensor lead.
B Check sensor
mounting.
B Compare resistance
values with the
sensor curve.
Cylinder primary pump
incorrectly connected
or faulty.
B Check that the
cylinder primary
pump is working,
e.g. by carrying out
a function test.
A01 811 Thermal
disinfection
was
unsuccessful .
Thermal disinfection
has been interrupted.
Too much water
drawn during thermal
disinfection.
B Select thermal
disinfection at a
time when no
additional heat
demand is made.
Boiler output is too
low for heat to be
used simultaneously
for other purposes
(e.g. second heating
circuit).
Temperature sensor is
incorrectly connected
or fitted.
Breakage or short cir-
cuit in the sensor lead.
Temperature sensor is
faulty.
B Check sensor
connection and
sensor lead.
B Check sensor
mounting.
B Compare resistance
values with the
sensor curve.
Cylinder primary pump
faulty.
B Check that the
cylinder primary
pump is working,
e.g. by carrying out
a function test.
SC FC
Events
display
Effect on control
characteristics Possible cause Remedy
Tab. 21 Fault table