In the case of an error, the control LED starts ashing red and a message is indicated
in the status display. A warning triangle is additionally indicated. If more than one
error or fault condition has occurred, only the one with the highest priority will be
displayed as a message in the status display.
Error code display
Plain text display Monitoring function Cause
0001 !LINE BREAK SENSOR X! Sensor line break Sensor line broken
0002
!SHORT CIRCUIT SENSOR X!
Sensor short circuit Sensor line short-circuited
0011 !DT TOO HIGH! DT too high Collector 50 K > than store to be loaded
0021 !NIGHT CIRCULATION! Night circulation
Betw. 11 p.m. and 5 a.m. col. temp > 40 °C
0031 !FL/RE INTERCHANGED! FL/RL interchanged
Col. temp. does not rise after switching on
0041
!FLOW RATE MONITORING!
Flow rate monitoring No ow rate at sensor
0051 !OVERPRESSURE! Overpressure monitoring Max. system pressure exceeded
0052 !LOW PRESSURE! Low pressure monitoring Min. system pressure reached
0061
!DATA MEMORY DEFEC-
TIVE!
Storing and changing adjust-
ments not possible
0071 !RTC MODULE DEFECTIVE!
Time-controlled functions
not possible
Real-time clock module defective
0081 STORE MAX EXCEEDED
Maximum store temperature
St. max has been exceeded
0091
!CONTROLLER RESTARTS!
Controller restarts Restart counting option
Acknowledging error messages
After the error has been removed and acknowledged, the error message disappears.
Î In order to acknowledge an error message, select the message and press the left button (
) for 2 s.
In the case of a sensor error, the system switches off, and a message appears on the
display. Additionally, a corresponding value for the error type assumed is indicated.
10 Messages
Note:
The function control „ow and return in-
terchanged“ according to the VDI guidelines
2169 can only correctly detect and indicate
the error „0031 !FL/RE INTERCHANGED!”
if the collector sensor measures the tempe-
rature directly in the uid at the collector
outlet. If the collector sensor is not correctly
placed, a false message may occur.
Î Place the collector sensor directly in the
uid at the collector outlet or deactivate
the “ow and return interchanged” func-
tion control.
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