25
MU 100 – 6721804146 (2019/10)
Table 9
Menu MU 100 (for CW 400/RC310 from NF74.xx)
4.4
Fault output
The fault output (OE1-75 and OP0 in coding positions 3-5) is
only activated 10 minutes after the fault has occurred. If no
faults are present, the fault output is deleted immediately.
Faults, which disappear again within the delay time of 10
minutes, are not displayed on the fault output.
5
Troubleshooting
Use only original spare parts. Damage caused by the use of
spare parts not supplied by the manufacturer is excluded from
the warranty.
▶ If a fault cannot be rectified, please contact your local
service engineer.
If the coding switch is turned to
0
when the power supply is
switched on for >2 s, all the module outputs are reset to the
factory settings, the faults are deleted and all settings are reset
to the factory settings.
▶ Restart the module.
The On/Off indicator indicates the operating condition of the
module.
Table 10
Max diff control
Max. differential
25 ...
40
... 85 K
Set maximum temperature differential
Maximum range
1 ...
10
... 20 K
Enter width of max. range
Proportional range
1 ...
5
... 20 K
Enter width of proportional range
Ramp
off | 1 ... 5 ... 20 %/s
Enter ramp for pump modulation
Heat source control (setpoint value)
Config mode 0-10V
Temp.
| Output
Boiler control via temperature or output?
Input value f. off
0
... 10 V
Switch off boiler with voltage
Input value f. max.
0 ...
10 V
Boiler at max. output with voltage
Max. temp. set v.
0 ...
90
... 100 °C
Set max. set temperature
Min. temp. set v.
0 ...
20
... 100 °C
Set min. set temperature
Menu item
Settings/adjustment range
Remark/restriction
0
1
2
3
4 5 6
7
8
9
10
0 010 013 313-001
Status
indicator
Possible causes
Remedy
Constantl
y red
Invalid switch position or
internal fault
▶ Replace the
module or select
valid switch
position.
Red
flashing
Temperature sensor faulty
or pump alarm output
▶ Replace
temperature
sensor or
eliminate pump
fault.
Constantl
y yellow
Coding switch set to
0
▶ Select
the
correct encoding
position.
Green
flashing
No communication with the
BUS system
▶ Establish the
BUS connection
to the EMS-BUS
or check it.
Constantl
y green
No fault, normal operation
▶
–
Constantl
y OFF
Lack of electrical supply
▶ Supply the
module with
mains voltage.
