Daikin EUWA/Y5-30HB/C(Z) - Fault Indication EUWA;Y5-10 HB(Z)

Overview of Fault Indications and Safeties ESIE98–06A
3–8 Part 3 – Troubleshooting
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2.2 Fault Indication EUWA/Y5-10HB(Z)
Overview of codes The following alarm and warning codes may appear on the screen:
1
: The overcurrent relay must be reset in the switch box. After reset, only alarm code h1 is flashing.
The controller can now be reset.
What happens in
the event of an
alarm or a warning
In the event of an alarm or a warning, the following happens:
Code(s) Description
Alarm or
warning
Reset See …
a1 The anti-freeze alarm is activated. alarm manual page 2-20
c1 Overcurrent protection of the compressor motor is activated. alarm automatic —
d1 The unit is carrying out a defrost cycle. warning automatic page 2-7
e1 NTC probe used to measure the inlet water temperature is defective. alarm automatic page 3-14
e2 NTC probe used to measure the outlet water temperature is defective. alarm automatic page 3-14
e3 NTC probe used to measure the coil temperature is defective. alarm automatic page 3-14
ee1 ep/ E P EEPROM on the controller PCB inside the unit is defective. alarm automatic page 1-30
fl No water flow either during the period of 15 seconds after the pump
was started or for 5 seconds while the compressor is active.
alarm manual page 2-36
h1 A high pressure switch or the discharge thermal protection is activated. alarm manual —
l1 Evaporating temperature thermostat is activated. alarm manual page 2-14
n1 The compressor requires maintenance: the total running hours of the
compressor (direct parameter c9) has exceeded the setting of the timer
treshold for maintenance warning (user password cb —see
page 2-21).
warning manual page 3-9
r1 The period foreseen for defrost has elapsed but the process of defrost
is not completed.
warning manual page 2-7
fl,h1 The reverse phase protector is activated. alarm automatic —
ei1 e0 control stability of power supply warning automatic
el control noise on power supply warning automatic
Alarm Warning
■ the unit is shut down
■ the buzzer is activated
■ 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