Malfunction Indications and Safeties Overview ESIE11-02
3–8 Part 3 – Troubleshooting
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2.2 Malfunction Indications Overview: EUWA*5-24KBZW1 and EUWY*5-24KBZW1
Alarm and warning
codes
The following alarm and warning codes may appear on the screen:
Code Description
Alarm/
Warning
Reset See page
a1
indicates an anti-freeze alarm.
Alarm Manual 3–11
e1
indicates that the NTC probe used to measure the
evaporator inlet water temperature is defective.
Alarm Automatic
e2
indicates that the NTC probe used to measure the
evaporator outlet water temperature is defective.
Alarm Automatic
e3
indicates that the fuse for the evaporator
heatertape (F4) is blown or that there is a reverse
phase error or that there is a problem with the I/O
PCB (A2P).
Alarm Automatic
Warning: In case the unit is equipped with freeze
protection, it is highly recommended to install the
remote indicator lamp alarm (H3P) (see wiring
diagram supplied with the unit). By doing so,
breakdown of the fuse for the evaporator heatertape
(F4) will be detected sooner and freezing of the
circuit will be avoided during cold weather.
eh5
indicates that the supply voltage is exceedingly
high. In this case contact a licensed electrician.
Alarm Automatic 3–11
el1
indicates that there is a power supply error
(example: noise). In this case contact a licensed
electrician.
Alarm Automatic
el2
indicates that there is a power supply error
(example: noise). In this case contact a licensed
electrician.
Alarm Automatic
els
indicates that the supply voltage is exceedingly
low. In this case contact a licensed electrician.
Alarm Automatic
epb
indicates that the EEPROM on the controller PCB
inside the unit is defective.
Alarm Automatic
epr
indicates that the EEPROM on the controller PCB
inside the unit is defective.
Alarm Automatic
fl
indicates that there was no sufficient water flow
either during the period of 15 seconds after the
pump was started or for 5 seconds while the
compressor is active or that the overcurrent
protection of the pump is activated.
Alarm Manual
hp1
indicates that a high pressure switch, the
discharge thermal protection or the overcurrent
protection of the compressor motor is activated or
that the NTC probe used to measure the ambient
temperature is defective.
Alarm Manual
fl +
hp1
indicates that there is most likely an RPP error or
that the F4 fuse is blown.
Alarm Manual
lp1
indicates that the low pressure switch is activated.
Alarm Manual
ter
indicates that there is a remote user interface
communication error.
Alarm Manual
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