Danfoss HDU-SF Manual de servicio - Página 8
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5.5
Error Codes
The error code is displayed in the main loop if an error occurs.
The error display disappears automatically as soon as the cause of the error has been cleared. All errors present longer than 6 minutes
are saved in the error log.
Error display
Error description
C - 1
Basic parameter error in flash or RAM
E 1
Temperature measuring error
▪ temperature range exceeds [-9.9 C...190 C]
▪ sensor short-circuit
▪ sensor break
E 3
Forward and return sensor reversed
E 4
Hardware error in ultrasonic measurement
▪ transducer/drive defective
▪ transducer/drive short-circuit
E 5
Communication not possible (too frequent reading)
E 6
Wrong direction of flow in volume measuring component
E 7
No primary power supply (only if mains unit used)
Supply is via back-up battery
E 8
Warning! Battery almost flat. Battery should be replaced.
E 9
Warning! Battery almost flat. Battery should be replaced.
E A*
Leakage: pipe break detected
E b*
Leakage: leakage detected in energy meter
E C*
Leakage: leakage pulse input 1
E d*
Leakage: leakage pulse input 2
* optional
5.6
Extension Modules
The Heat Meter has two slots for extension modules. These modules have no effect on consumption recording and can be fitted without
damaging the verification mark.:
Slot 1
Pulse In (2x)
Pulse In (2x) / Out (1x)
RS232
M-Bus
RS485
L-BUS (for external radio)
Analogue Out (4-20 mA)
8
HDU-SF (Horizontal Distribution Units - Single Flat)
Slot 2
Pulse In (2x)
Pulse Out (2x)
Pulse In (2x) / Out (1x)
RS232
M-Bus
RS485
L-BUS (for external radio)
VIIGB102
Danfoss Heating Solutions