Daikin EUWY 24KBZW1 Series, Service Manual, Page: 137 / 210

ESIE11-02 Malfunction Indications and Safeties Overview
Part 3 – Troubleshooting 3–9
3 3
4
5
1
What happens in
the event of an
alarm or a warning In the event of an alarm or a warning, the following happens:
What to do in the
event of an alarm
■
In the event of automatic reset, the system restarts automatically.
■
In the event of manual reset, proceed as follows:
Offline
communication failure between the digital
controller of the unit and the remote user
interface. Confirm the correct selection of
parameter code
h23
. This should be default
setting 0 and confirm the correction installation
according to the installation manual of the remote
user interface EKRUMCA.
Alarm Automatic 3–11
Remark: If the alarm codes
fl
and
h1
are flashing
alternately, the alarm is most probably caused by the
reverse phase protector or by the fuse for evaporator
heatertape (F4) that was blown.
hc1
indicates that the compressor 1 requires
maintenance: the total running hours of the
compressor 1 (direct parameter
c10
) has
exceeded the setting of the timer threshold for
maintenance warning (user parameter
c14
).
Warning Manual
hc2
indicates that the compressor 2 requires
maintenance: the total running hours of the
compressor 2 (direct parameter
c11
) has
exceeded the setting of the timer threshold for
maintenance warning (user parameter
c14
).
Warning Manual
Code Description
Alarm/
Warning
Reset See page
Alarm Warning
■
The unit is shut down.
■
The alarm relay is energized.
■
The display starts flashing, alternately showing the
alarm code(s) and the inlet water temperature.
The display starts flashing, alternately
showing the warning code and the inlet
water temperature.
Step Action Result
1 Find the cause of the alarm and correct it. The system has been repaired.
2 If the alarm codes
a1
,
fl
,
hp1
or
lp1
appear on the display, reset the alarm
manually by pressing the
clear
combination keys
C
and
D
simultaneously for approximately 5
seconds.
Once the alarm is reset, the error code and
the
H
LED no longer appear on the display.
The controller continues its normal
operation, displaying the inlet water
temperature.