Daikin Altherma EHS04P30B Instructions D'installation Et D'utilisation page 138

8 x Errors, malfunctions and messages
8.2 Malfunctions
Malfunction
System not working
(nothing on the display,
No mains voltage
operation LED on
RoCon BM1 off)
Date and time are not correctly set.
Switching time program
is not working or pro-
Incorrect operating mode set.
grammed switching times
are being carroed out at
During a switching time the user made a man-
the wrong time.
ual setting (e.g. changed the target tempera-
ture, changed the operating mode)
Control unit does not
Operating system of control unit crashed.
respond to entries
Operating data are not
Operating system of control unit crashed.
updated
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)
Refrigerant compressor is not working.
Heating does not warm
up
"Cooling".
Settings for off-peak mains connection do not
correspond to settings for electrical connec-
tions.
The power company has sent the high-cost
signal.
Installation and operating instructions
56
Possible cause
System is in the operating mode
Possible solution
Switch on the external main switch of the machine.
Switch on system fuse(s).
Replace system fuse(s).
Set date.
Set time.
Check week day-switching time allocation.
Set to operating model "Automatic 1" or "Automatic 2".
1. Place the rotary switch in the "Info"
2. Place the rotary switch in the "Operating Mode"
position.
3. Select correct operating mode.
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.
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.
Check the operating mode setting.
Check the request parameters.
Check setting of the date, time and switching time
program on the control unit.
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.
Switch the operating mode to "Heating".
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.
Wait for the repeat off-peak rate signal which reacti-
vates the power supply.
position.
Daikin Altherma EHS(X/H)
Daikin Altherma integrated solar unit
008.1441399_02 – 01/2021 – EN