Operating And Fault Indications Via The Rc35 - Buderus MCM10 Notice D'installation

5
Operating and fault indications
LED OFF
No. Function Diagnosis
5, Heating Operation: No heat
6, appliance 1 demand to the heat-
7, ing appliance; heat-
8 heating ing appliance
appliance 2 operational
heating Operation: No
appliance 3 heating appliance
connected
heating Configuration/
appliance 4 Fault: No communi-
cation between the
MCM10 module
and this heating
appliance, although
it is installed.
Tab. 9 Operating and fault indications on the MCM10 module
1) Another heating appliance will be enabled automatically in case of heat demand.
5.4 Operating and fault indications via
the RC35
The operating and fault indications of all heating
appliances and the MCM10 module can be checked on
the heating controller with 2-wire BUS control. The
Indica-
tor Description
5H Break in BUS communication
4U The contacts for the supply sensor
4Y have been interrupted (4Y) or have
shorted (4U).
EF Internal electronic fault
8Y The external switch contact is open. •
AE Jumper configuration error.
AU The calculated boiler water temper-
ature is not achieved in timely fash-
ion.
AY An error has occurred on one or
more heating appliances.
Tab. 10 Operating and fault indications via the RC35
16
ON
Remedy Diagnosis
– Operation: Heat
demand to the heat-
ing appliance; heat-
ing appliance in
operation
–
Check the corre-
sponding connec-
tion cable.
Remove fault on the
heating appliance.
Replace MCM10
module.
Remedy
• Display with fewer than 4 heating appliances.
• Check connecting cable between the boiler and the MCM10 module for cable breaks.
• Check whether the cable makes good contact.
• Check whether this fault originates from a boiler ( boiler installation instructions).
• Replace MCM10 module.
• Check supply temperature sensor and connecting lead.
• Replace MCM10 module.
• If the fault is indicated as being applicable to one of the boilers: Replace the PCB on the relevant
boiler.
• If the fault is not indicated as attributable to one of the boilers: Replace the MCM10 module.
Check the cable of the external switching contact for cable breaks.
• Check whether the connection plug is present.
• Replace MCM10 module.
• Check whether the jumper is attached correctly.
• Check whether enough heating appliances are working.
• Eliminate the error on the corresponding boiler.
Flashing
Remedy Diagnosis
– Configuration:
Communication
between this heat-
ing appliance and
the MCM10 module.
Fault: Heating
appliance fault
Fault: No communi-
cation between the
MCM10 module
and this heating
appliance because it
has been deliber-
ately removed.
Fault: Communica-
tion error between
the MCM10 mod-
ule and heating
appliance.
meaning of the display indications of the MCM10 are
described in table 10. The meaning of the other display
indications are described in the documentation for the
controller and the boiler.
Remedy
Wait until the con-
figuration has com-
pleted.
Remove fault on the
heating appliance.
Reset the configura-
tion
( paragrahp 4.3).
Check the corre-
sponding connec-
tion cable.
Replace MCM10
1)
module.
MCM10