Faults And Malfunctions; Troubleshooting; Overview Of Possible Malfunctions - Daikin Altherma EHSX04P50D Installations- Und Wartungsanleitung

8

Faults and malfunctions

8 Faults and malfunctions
DANGER: RISK OF ELECTROCUTION
Electrostatic charges can lead to voltage arcing that can
destroy the electronic components.
▪ Before touching the control panel PCB, ensure potential
equalisation.
8.1

Troubleshooting

The electronics of the Daikin Altherma EHS(X/H)
▪ signal a fault by status display illuminating in red and
8.2

Overview of possible malfunctions

Malfunction
System not working No mains voltage
(nothing on the display,
operation LED on Ro-
Con BM2C off)
Switching time pro- The date and time are not set correctly.
grams are not operating
or programmed switch-
ing times are carried
Incorrect operating mode set.
out at the wrong time.
During a switching time the user made a manual set-
ting (e.g. changed the target temperature, changed
the operating mode)
The controller does not The controller's operating system has crashed.
respond to inputs
Operating data are not The controller's operating system has crashed.
updated
Heating does not warm Requirement heating mode shut off (e.g. switching
up time program is in the economy phase, outside tem-
perature is too high, parameters for optional backup
heater (EKBUxx) incorrectly set, requirement for hot
water active)
Refrigerant compressor is not working.
The system is in the "Cooling" operating mode.
Settings for off-peak mains connection do not cor-
respond to settings for electrical connections.
The electricity company has sent the peak rate sig-
nal.
Installation and maintenance instructions
40
▪ show a fault code on the display.
An integrated fault memory stores up to 15 fault messages that have
occurred most recently.
Depending on the operating mode, messages are also forwarded to
connected room controllers or room thermostats.
Troubleshooting: Error code E90XX
1
2
Troubleshooting: Other error codes
1
Possible cause
On the RoConPlus controller: Perform an error reset (see Con-
troller operating instructions).
Error will be displayed again shortly: Find and rectify the cause
of the error.
Find and rectify the cause of the error.
Possible solution
▪ Switch on the system's external main switch.
▪ Switch on system fuse(s).
▪ Replace system fuse(s).
▪ Set the date.
▪ Set the time.
▪ Check the weekday to switching time assignment.
▪ Set the "Automatic 1" or "Automatic 2" operating mode
1 Select the "Operating mode" menu [→ Main menu → Oper-
ating mode].
2 Select the correct operating mode.
▪ RESET the controller. To do this, disconnect the system from
the power supply for at least 10 s and then switch on again.
▪ RESET the controller. To do this, 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 the date, time and switching time program settings on
the controller.
▪ With backup heater (EKBUxx) installed:
▪ Check that the backup heater heats the return flow temperat-
ure to at least 15 °C (at a low return flow temperature, the
heat pump uses the backup heater first to achieve this min-
imum return flow temperature).
▪ Check mains supply of the backup heater (EKBUxx).
▪ Thermal contactor (STB) on the backup heater (EKBUxx) has
triggered. Unlock.
▪ Switch the operating mode to "Heating".
▪ HT/NT function is active and the [HT/NT connection] para-
meter is set incorrectly.
▪ Other configurations are also possible. However, these must
match the type of off-peak mains connection.
▪ The [SMART GRID] parameter is active and the connections
are incorrectly set.
▪ Wait for the repeat off-peak rate signal which reactivates the
power supply.
Daikin Altherma EHS(X/H)
Daikin Altherma integrated solar unit
008.1444099_00 – 07/2018 – EN