38
Rectify operating fault
HMC300 – 6 720 813 192 (2014/10)
9.2
Rectify shown operating fault
A fault in the system is shown on the control unit display.
Fig. 6
Fault message
If several faults occur at the same time the fault with the highest
priority is shown first. Error codes and additional codes are
shown. These codes inform the installer of the causes. If you
acknowledge a fault (by pressing the menu dial) the display
returns to the initial menu. A message on the fault is still shown
on the information line. If the fault is still active you can show it
again by pressing the return button.
The fault could be caused by an operating fault in the control
unit, on a component, a module or the heat source.
The system continues to remain in operation as long as
possible, i.e. heating can still take place.
The hot water at the taps
does not reach the required
temperature.
The mixer valve is set lower than the
required hot water temperature.
If in doubt, contact your installer to have the mixer valve
settings checked.
The figure 0 is always
shown in the information
menu for solar energy
production, even though
the solar heating system is
in operation.
The solar heating system is set
incorrectly.
Contact your installer to have the settings for the control
unit checked.
1) Read more about this in the instructions for extra heat source.
Symptom
Cause
Action
Table 39 Rectify "experienced" fault
NOTICE:
System damage due to frost! The
system can freeze up if it is taken out of service
due to fault shutdown.
▶ Use Tab. 40 to check if the fault can be
fixed.
▶ If the fault cannot be fixed, contact your
contractor immediately.
6 720 811 136-43.1O
Summary of Contents for HMC300
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