Daikin EHSXB08P50BA [57/84] X errors malfunctions and messages

Daikin EHSXB08P50BA [57/84] X errors malfunctions and messages
8 x Errors, malfunctions and messages
Daikin Altherma EHS(X/H)
Daikin Altherma integrated solar unit
008.1441399_02 – 01/2021 – EN
Installation and operating instructions
57
8.2 Malfunctions
Malfunction Possible cause Possible solution
System not working
(nothing on the display,
operation LED on
RoCon BM1 off)
No mains voltage
Switch on the external main switch of the machine.
Switch on system fuse(s).
Replace system fuse(s).
Switching time program
is not working or pro-
grammed switching times
are being carroed out at
the wrong time.
Date and time are not correctly set.
Set date.
Set time.
Check week day-switching time allocation.
Incorrect operating mode set. Set to operating model "Automatic 1" or "Automatic 2".
During a switching time the user made a man-
ual setting (e.g. changed the target tempera-
ture, changed the operating mode)
1. Place the rotary switch in the "Info"
position.
2. Place the rotary switch in the "Operating Mode"
position.
3. Select correct operating mode.
Control unit does not
respond to entries
Operating system of control unit crashed.
Carry out RESET of control unit. To do so, disconnect
the system from the power supply for at least 10 s and
then switch on again.
Operating data are not
updated
Operating system of control unit crashed.
Carry out RESET of control unit. To do so, disconnect
the system from the power supply for at least 10 s and
then switch on again.
Heating does not warm
up
Heating request switched off (e.g. switching
time program is in the economy phase, exter-
nal temperature is too high, parameters for
Backup-Heater (EKBUxx) are set incorrectly,
hot water request is active)
Check the operating mode setting.
Check the request parameters.
Check setting of the date, time and switching time
program on the control unit.
Refrigerant compressor is not working.
If there is a Backup-Heater installed (EKBUxx):
Check whether the return flow temperature Backup-
Heater heats up to at least 15 °C (if the return flow
temperature is low, the heat pump first uses the
Backup-Heater in order to reach this minimum return
flow temperature).
Check the mains supply to the Backup-Heater
(EKBUxx).
Thermal protection switch (STB) on Backup-Heater
(EKBUxx) has been triggered. Unlock.
System is in the operating mode
"Cooling".
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 power company has sent the high-cost
signal.
Wait for the repeat off-peak rate signal which reacti-
vates the power supply.

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