Service
47
Control 8313 – 6720859567 (2017/03)
Incorrect
FM-SI/EMS
module
Heat source does not start. • Invalid combination of EMS heat source
with FM-SI
• Incorrect boiler type selected.
• The EMS boiler type does not support the
FM-SI module.
▶ Check boiler type setting.
▶ Remove FM-SI.
▶ Open safety chain (SI 17,18)
at ZM5313.
▶ Connect safety equipment to the
EMS heat source.
▶ Open safety chain (SI 17,18)
at ZM5313.
▶ Remove the function module.
Wrong conn.
pos. for EMS SI
chain
Heat source does not start. • Incorrect connection of safety equipment.
• Incorrect boiler type selected.
▶ Connect safety equipment to the
EMS heat source.
▶ Check boiler type setting.
▶ With the EMS boiler type, open safety
chain (SI 17, 18) at the ZM5313
(remove jumper).
Wrong
connection for
flue gas shut-
off valve EMS
Heat source does not start. • The flue gas damper is incorrectly
connected.
▶ Connect the flue gas damper to the SAFe.
The flue gas
damper on the
central module
is not
supported for
the boiler type
EMS. Please
insert the
jumper.
• Incorrect boiler selected.
• Incorrect connection location of flue gas
damper.
▶ Check boiler type setting.
▶ Connect flue gas damper to the EMS heat
source.
Flue gas
temperature
sensor for heat
source is
defective
The flue gas temperature cannot be
measured.
• The temperature sensor is incorrectly
connected or faulty.
• The temperature sensor or the control unit
is defective.
▶ Check sensor port.
▶ Replace the temperature sensor or
module.
Flue gas
temperature
too high
No effects on control characteristics • The heat source is soiled.
• The flue gas temperature sensor is faulty.
▶ Clean heat source.
▶ Check sensor connection and function.
External fault
input on
heating circuit
pumpExternal
fault input on
heating circuit
pump
No effects on control characteristics • The error input WF1/2 of the FM-MM
module has been opened.
• The externally connected heating circuit
pump is faulty or malfunctioning.
▶ Check the function of the externally
connected heating circuit pump.
▶ Replace the module if necessary.
Use of control
unit
address 0 is bl
ocked
No effects on control characteristics • The rotary encoder on the rear of the user
interface is addressed incorrectly.
Example: system with a control unit and
rotary encoder position > 0.
▶ Check the position of the rotary encoder
( Chapter 8.2.1, page 16):
– Position 0: master control unit
(only 1 CBC-BUS node exists)
– Position > 0: additional CBC-BUS
node exists
No master
controller
connected
Boiler protection is not ensured.
DHW priority is no longer possible.
The control expects the minimum
outdoor temperature.
• The master control unit (address 0)
is switched off.
• No master (address 0) available
▶ Check addresses of all CBC-BUS nodes.
The master control unit must have the
address 0 (rotary encoder behind the
user interface of the control unit
Chapter 8.2.1, page 16).
▶ Check CBC-BUS connection to
address 1.
Connection to
sub station
disrupted
CBC-BUS communication no longer
possible.
Control functions requiring data
exchange via the CBC-BUS can no
longer be executed.
• Several addresses are identical.
• Each address must only be assigned once in
the CAN-BUS network.
▶ Check addresses of all CBC-BUS nodes.
▶ Each address must only be assigned once
in the CBC-BUS network.
Fault,
observation
Effect on control characteristics Reason Remedy
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