Faults And Malfunctions; Troubleshooting; Current Fault Display; Reading The Fault Memory - Rotex HPSU compact 304 Instruction Manual

8

Faults and malfunctions

8.1 Troubleshooting

Electronic control of the ROTEX HPSU compact:
– Signals a fault by red backlighting in the display and
– Shows a fault code in the display (see tab. 8-2).
An integrated fault memory stores up to 15 fault messages that
have occurred most recently.
Depending on the operating mode, the fault messages are also
forwarded to connected room stations or room thermostats.

8.1.1 Current fault display

E 75
Inside Unit: Boiler
Address: 0
1 Fault message as code (see tab. 8-2)
2 Location information (equipment) of the detected fault
3 Bus address of the unit causing the fault
Fig. 8-1 Displays an active error message (controller fault)
E 9001
WWSensorInput
Heating Module
Inside Unit:
0
Address:
1 Fault message as code (see tab. 8-2)
2 Fault message as clear text (see tab. 8-2)
3 Location information (equipment) of the detected fault
4 Bus address of the unit causing the fault
Fig. 8-2 Displays an active fault message (heat pump fault)
BA ROTEX HPSU compact 4 - 09/2013
1
2
3
1
2
3
4
8 x Faults and malfunctions

8.1.2 Reading the fault memory

The last received (latest) fault message is in the first position. 
All the other previous fault messages are then pushed backwards
by one place when a new entry is made. The 16th fault message
will be deleted every time a new fault message is received.
Special Level
Manual Operation
Error
Special Level
Error
E75
Delete massage
Return
Fig. 8-3 Read-out of fault memory

8.1.3 Solving failures

Troubleshooting the electrical, coolant and hydraulic
systems of the ROTEX HPSU compact may be per-
formed only by authorised and trained heating experts.
Read Error Memory
Delete massage
E75
Inside Unit: Boiler
Address: 0
43