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FA ROTEX HPSU compact (V5) •
8 x Errors, malfunctions and messages
8 Errors, malfunctions and messages
8.1 Recognising errors, correcting
malfunctions
Electronic control of the ROTEX HPSU compact:
– signals an error by means of the background of the display
l
ighting up red and shows an error code in the display
(see tab. 8-2).
– shows information messages regarding the operating status,
w
hich is not signaled by red background lighting.
An integrated Protocol saves up to 15 error-related or other infor-
mation messages regarding the operating status that last oc-
curred.
Depending on the operating mode, messages are also forwarded
to conn
ected room stations or room thermostats.
8.1.1 Current fault display
8.1.2 Read Protocol
The report can be read out in the "Special Level" (see fig. 8-3).
The last received (latest) message is in the first position. All other
pre
vious messages are then pushed backwards by one place
when a new entry is made. The 15th message will be deleted any
time a new message is received.
8.1.3 Troubleshooting
Information messages, which are displayed without red back-
lighting, normally result in no permanent limitations on the op-
eration of the ROTEX HPSU compact.
Messages that are displayed with an error code E.... and red
back-lighting required error correction by an authorised and
trained expert heating technician.
For information on warning messages see section 8.3.
Ɣ Detecting and remedying the cause of the malfunction.
– Contactor triggered:
Nothing shown on the display in the controller. Ascertain
cause of trig
gering the contactor and remedy fault. Start up
system again.
Î Once the cause has been remedied, the system will
resume operations as normal.
– Contactor not triggered:
a) No fault codes are shown but the system is not working
prop
erly. Troubleshooting and eliminating faults
(see section 8.2).
Î Once the cause has been eliminated, the system contin-
ues to work normally.
b) Fault codes are displayed as long as the fault conditions
are pre
sent. Troubleshooting and eliminating faults
(see section 8.3). If the fault message
is still displayed
after the cause of the fault has been corrected, the system
must be disconnected from the power supply for at least
10 in order to unlock it.
Î Once the cause has been eliminated, the system contin-
ues to work normally.
CAUTION!
Electrostatic charges can lead to voltage
arcing that can destroy the electronic
components.
Ɣ Ensure equipotential bonding before
touching the switching field circuit
board.
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 err
or message (controller fault)
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 Display of a current error message (heat pump fault)
Inside Unit:
Address:
Boiler
0
Inside Unit:
Address:
Heating Mod-
ule
E 9001/80
Fault T-return
Fig. 8-3 Reading the protocol
E75E75
E75
Special Level
Manual Operation
FA failure
Protocol
Special Level
FA failure
Protocol
Timeprog Reset
Inside Unit:
Address:
Boiler
0
Read Protocol
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