10
x
Faults and malfunctions
10 Faults and malfunctions
10.1 Troubleshooting
The electronics of the ROTEX GCU compact
– signal a fault by red backlight in the display, and
– show a fault code in the display.
An integrated fault memory stores up to 15 fault messages that
have occurred most recently.
Depending on the operating mode, messages are also forwarded
to connected room controllers or room thermostats.
Troubleshooting
●
Detecting and remedying the cause of the malfunction.
●
Non-interlocking faults (see chap. 10.3) are indicated for as
long as the malfunction exist. Once the cause has been elimi-
nated, the unit continues to work normally.
●
Interlocking faults with fault code in the display (see
chap. 10.4).
●
By pushing the Exit button under the display for at least
5 s you display the "Special Level" and cancel the
interlock (menu-guided).
10.2 Overview of possible malfunctions
You can find detailed information on the control unit and
the boiler control panel as well as on the operating
modes and parameter settings in chap. 6 and in the
"ROTEX RoCon BF" controller documentation supplied
with the controller.
Malfunction
Possible cause
Possible solution
Heating system not
functioning (main
switch not illuminated,
no display)
No mains voltage
●
Switch on the main switch for the boiler.
●
Turn on main switch of heating room.
●
Check / switch on fuse house connection.
●
Check/ renew fuse boiler control panel.
Only use same type of fuses!
Heating does not
warm up
Central heating standby switched off (e.g. timer
is in economy phase, outside temperature too
high)
●
Check operating mode setting.
1)
●
Check request parameter
)
(e.g. timer program).
Heating does not
warm up enough
Heating characteristic too low
●
Increase parameter value.
1)
●
Carry out hydraulic balancing.
Hot water does not
warm up
Storage charging standby switched off (e. g.
timer is in economy phase)
●
Check operating mode setting.
1)
●
Check request parameter.
1)
Hot water does not
warm up enough
Storage tank charging temperature too low
●
Increase target hot water temperature.
1)
Tapping rate too high
●
Reduce the draw-off rate, limit throughput.
Burner output too low
●
See malfunction "Maximum burner output too low".
Maximum burner out-
put too low
Burner setting wrong
●
Check burner settings and adjust as required (see
chap. 7.3).
●
Replace safety gas control block.
Air/flue gas resistance too high
●
Check the lines for contaminations.
●
If necessary, install lines with a larger line cross-
section for supply air or flue gas.
Burner does not start Interlocking malfunction
●
Determine and repair the cause for the malfunction.
●
Cancel interlock (see chap. 10.4).
Incorrect operating mode active
●
Check operating mode setting and adjust correctly.
Also check operating mode switchover by an external
source (EXT switching contact, room thermostat).
Summary of Contents for GCU compact 315
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