Buderus MCM10 Instrucciones De Instalación página 69

LED Off
No. Diagnosis Remedy
3 Operation: switching
contact not activated;
not a fault.
Fault: switching Check power supply.
contact activated, but
Replace
no power supply.
MCM10 module.
4 Operation: no Standard operating
communication mode with only one
between 2 MCM10 MCM10 module or
modules or the with the MCM10
heating controller master without 2-wire
(2-wire BUS). BUS controller.
Fault: no Check the
communication corresponding
between 2 MCM10 connecting lead/
modules or the cable.
heating controller
Replace MCM10
(2-wire BUS).
module or heating
controller.
Tab. 10 Operating and fault displays
MCM10
On
Diagnosis
– Fault: no boiler
operational.
Fault: flow
temperature sensor
faulty.
Fault: system
pressure too low.
Fault: no
communication
between
MCM10 module and
all connected boilers
for at least 1 minute.
Operation:
communication
between this MCM10
module and the
previous module or
the heating controller
(2-wire BUS).
Operating and fault displays
Flashing
Remedy Diagnosis
Remove faults at the
boiler.
Check temperature
sensor on the MCM10
master and
connecting lead.
Replace
MCM10 module.
Top up the system
with water.
Check corresponding
cables/leads.
Replace
MCM10 module.
– Configuration:
communication
between 2 MCM10
modules or the
heating controller
(2-wire BUS).
Fault: no
communication
between 2 MCM10
modules or the
heating controller
(2-wire BUS),
although this
component is still
present.
Fault: no
communication
between 2 MCM10
modules or the
heating controller
(2-wire BUS) because
this component has
been deliberately
removed.
5
Remedy
Wait until the
configuration has
completed. The LED
will then be illuminated
steadily.
Check the
corresponding
connecting lead/
cable.
Replace MCM10
module or heating
controller.
Carry out
configuration reset
( chapter 4.3).
69