8
x
Errors, malfunctions and messages
Installation and maintenance instructions
46
Daikin Altherma M ECH
2
O
Solar storage tank with heating controller
008.1446799_00 – 07/2019 – EN
8.2
Malfunctions
Malfunction
Possible cause
Possible solution
System not working
(nothing on the display,
operation LED on
RoCon
BM2C off)
No mains voltage
●
Switch on the system's external main switch.
●
Switch on system fuse(s).
●
Replace system fuse(s).
Switching time programs
are not operating or pro-
grammed switching times
are carried out at the
wrong time.
The date and time are not set correctly.
●
Set the date.
●
Set the time.
●
Check the weekday to switching time assignment.
Incorrect operating mode set.
●
Set "Automatic 1" or "Automatic 2" operating mode.
During a switching time the user made a man-
ual setting (e.g. changed the target tempera-
ture, changed the operating mode)
1.
Set the rotary switch to the
"Info"
position.
2.
Set the rotary switch to the
"Operating Mode"
position.
3.
Select correct operating mode.
The controller does not
respond to inputs
The controller's operating system has
crashed.
●
RESET the controller. To do this, disconnect the
system from the power supply for at least 10
s and
then switch on again.
Operating data are not
updated
The controller's operating system has
crashed.
●
RESET the controller. To do this, disconnect the
system from the power supply for at least 10
s and
then switch on again.
Heating does not warm
up
Requirement heating mode shut off (e.g.
switching time program is in the economy
phase, outside temperature is too high,
parameters for optional backup heater
(EKBUxx) incorrectly set, requirement for hot
water active)
●
Check the operating mode setting.
●
Check the request parameters.
●
Check the date, time and switching time program
settings on the controller.
Refrigerant compressor is not working.
●
With installed backup heater (EKBUxx):
check whether the backup heater heats the return
temperature to at least 15 °C (at a low return temper-
ature, the heat pump uses the backup heater first to
achieve this minimum return temperature.).
●
Check mains supply of the backup heater (EKBUxx).
●
Thermal contactor (STB) on the backup heater
(EKBUxx) has triggered. Unlock.
System is in "Cooling" operating mode.
●
Switch the operating mode to "Heating".
Settings for off-peak mains connection do not
correspond to settings for electrical connec-
tions.
●
HT/NT function is active and the parameter [HT/NT
Contact] is set incorrectly.
Other configurations are also possible. However,
these must match the type of off-peak mains
connection.
●
The parameter [SMART GRID] is active and the
connections are set incorrectly.
The electricity company has sent the peak
rate signal.
●
Wait for the repeat off-peak rate signal which reacti-
vates the power supply.
Содержание Altherma EBLQ05C2V3
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