Errors, Malfunctions And Messages - Daikin EHS157034 Operating Instructions Manual

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Errors, malfunctions and messages

7 Errors, malfunctions and messages
CAUTION!
Electrostatic charges can lead to voltage
arcing that can destroy the electronic
components.
● Secure potential equalisation before
touching electronic parts (e.g. by
touching an earthed metallic part).
7.1 Recognising errors, correcting
malfunctions
Electronic control of the Daikin Altherma EHS(X/H):
– signals an error by means of the background of the display
lighting up red and shows an error code in the display 
(see section 7.3).
– shows information messages regarding the operating status
(not signalled by red background lighting).
An integrated Protocol saves up to 15 error-related or other infor-
mation messages regarding the operating status that last oc-
curred.
Depending on the operating mode, messages are also forwarded
to connected room stations or room thermostats.
7.1.1 Current fault display
E 75
Inside Unit:
Boiler
Address:
0
1 Error message as a code (see section 7.3)
2 Location information (equipment) of the detected fault
3 Device ID for the RoCon unit where the message originates
Fig. 7-1 Displays an active error message (controller fault)
1
E 9001 / 80
2
Fault T-return
3
Inside Unit:
Heating Mod-
4
Address:
ule 0
1 Error message as a code (see section 7.3)
2 Fault message as plain language (see section 7.3)
3 Location information (equipment) of the detected fault
4 Device ID for the RoCon unit where the message originates
Fig. 7-2 Display of a current error message (heat pump fault)
7.1.2 Read Protocol
The Protocol can be read in the "Special Level" (see fig. 7-3).
The last received (latest) message is in the first position. All other
previous messages are then pushed backwards by one place
when a new entry is made. The 15th message will be deleted any
time a new message is received.
Operating instructions
56
1
2
3
Special Level
Manual Operation
FA failure
Special Level
FA failure
E75
Protocol
Delete message
Fig. 7-3 Reading the protocol
7.1.3 Troubleshooting
Information messages, which are displayed without red back-
lighting, normally result in no permanent limitations on the op-
eration of the Daikin RoCon.
Messages that are displayed with an error code E.... and red
back-lighting required error correction by an authorised and
trained expert heating technician.
For information on warning messages see section 7.3.
● Detecting and remedying the cause of the malfunction.
– Contactor triggered:
Nothing shown on the display in the controller. Ascertain
cause of triggering the contactor and remedy fault. Start up
system again.

Once the cause has been remedied, the system will
resume operations as normal.
– Contactor not triggered:
a) No fault codes are shown but the system is not working
properly. Troubleshooting and eliminating faults 
(see section 7.3).

Once the cause has been eliminated, the system contin-
ues to work normally.
b) Fault codes are displayed as long as the fault conditions
are present. Troubleshooting and eliminating faults 
(see section 7.3). If the fault message is still displayed
after the cause of the fault has been corrected, the system
must be disconnected fromthe power supply for at least
10 in order to unlock it.

Once the cause has been eliminated, the system contin-
ues to work normally.
Read Protocol
Protocol
E75
E75
Inside Unit:
Boiler
Address:
0
Daikin RoCon HP
Daikin Controller
008.1420844_13 – 02/2016