39
Rectify operating fault
HMC300 – 6 720 813 192 (2014/10)
Faults that you can rectify yourself.
If an operating fault cannot be rectified:
▶ Contact an authorised installer, or customer service.
Submit error code, additional code and control unit ID
number.
Interference at extra heat source
Faults that block the heat source can be rectified by resetting.
▶ Do a reset of the heat source.
More information on how to rectify operating faults on the heat
source are available in the instructions for the heat source.
▶ Contact your installer if the fault cannot be rectified by
resetting.
Fault
code
Additional
code
Cause or description
of the fault
Check/cause
Action
Nothing shown on the display
The system is switched off.
▶ Switch on the system.
The power supply to the control unit has been
disconnected.
▶ Check if the room unit is correctly
placed in the wall bracket.
H01 5284 Warning: The last
thermal disinfection
could not be carried out
Check if water is continuously taken from the hot
water heater via the hot tap water during the
thermal disinfection.
▶ Stop such continuous
consumption of hot water, or
change the time for thermal
disinfection.
A11 1010 No communication via
bus connection EMS
plus
–
▶ Check if the room unit is correctly
placed in the wall bracket.
A11 1038 Invalid value time/date
Date/time still not set
▶ Set date/time
Long power failure
▶ Avoid power failure.
A11 3061
3062
3063
3064
No communication with
mixing module (3061:
heating circuit 1, ...,
3064: heating circuit 4)
–
▶ Check if the room unit is correctly
placed in the wall bracket.
A11 6004 No communication with
solar heating module
–
▶ Check if the room unit is correctly
placed in the wall bracket.
A21
A22
A23
A24
1001 –
No bus connection between HPC400 and CR10
or CR10H in corresponding heating circuit (A22:
heating circuit 2, ..., A24: heating circuit 4).
▶ Check if the room unit is correctly
placed in the wall bracket.
A01 5451 The heat pump needs
servicing
Maintenance is required. The system continues
to work as far as possible.
▶ Contact the installer to carry out
maintenance.
Table 40
_
_
_
Table 41 The control unit ID number must be filled in here by the installer at installation.
Faults at the heat source are always shown at
the heat source.
If there is a bus connection between the
control unit and heat source, the fault will also
be shown in the control unit.
Ask your installer if you are unsure of which
connection there is.
Summary of Contents for HMC300
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