STIEBEL ELTRON WWK 223 electronic - Page 15

OPERATION
Troubleshooting
www.stiebel-eltron.com WWK 223-303 electronic | 15
ENGLISH
Fault description Remedy
16 Steadily
on
A short circuit of the impressed
current anode has occurred or
the protective anode is faulty.
Immediately notify a quali-
fied contractor, as the appli-
ance is not protected against
corrosion if the impressed
current anode is faulty.
32 flashing
The appliance is being operated
with a partially filled DHW cyl-
inder. The appliance does not
heat up.
Fill the appliance's DHW
cylinder. The fault code dis-
appears and the appliance
starts.
The anode current is interrupted.
The appliance does not heat up.
Notify a qualified contractor.
64 Steadily
on
The defrost temperature has not
yet been reached after the max-
imum defrost time has lapsed.
The compressor is faulty.
The fault is reset automat-
ically once the evaporator
temperature has risen to the
defrost end temperature.
Notify a qualified contractor.
128 Steadily
on
There is no communication
between the controller and the
programming unit. The most
recently selected set values are
active. The appliance continues
to deliver heat.
Notify a qualified contractor.
256 flashing Manually activated emergency
mode (only electric emergency/
booster heater enabled)
See chapter "Appliance de-
scription/ Emergency mode".
512 flashing A fault has occurred in the refrig-
erant circuit.
Notify a qualified contractor.
E 1 flashing The temperature sensor on the
air inlet is faulty.
Notify a qualified contractor.
E 2 flashing The temperature sensor on the
evaporator is faulty.
Notify a qualified contractor.
E 4 Steadily
on
The hot gas temperature sensor
is faulty. The appliance continues
to deliver heat. To protect the ap-
pliance, the (possibly higher) set
temperature is reduced to the set
value for setback.
Notify a qualified contractor.
E 16 Steadily
on
The high pressure limiter has
responded. Compressor heating
mode is temporarily blocked.
Compressor heating mode will
continue as soon as the pressure
has normalised.
Wait until the pressure has
normalised.
E 32 Steadily
on
An electrical fault has occurred. Notify a qualified contractor.
E 64 flashing Evaporator temperature < mini-
mum evaporator temperature
Notify a qualified contractor.
E
128
flashing A permanent pressure switch
fault has occurred. A pressure
fault occurred multiple times
within a defined pressure fault
evaluation time.
Notify a qualified contractor.
If several faults occur, the fault codes are added up.
Example: If both the cylinder top sensor and the integral sensor
are faulty, the display shows fault code6(= 2+4).
Note
A fault code preceded by E appears if the fault relates to
the refrigerant circuit. Notify a qualified contractor.
Application scenarios for emergency mode
If the appliance shows fault code8, you can manually activate
emergency mode. If a different fault occurred previously, but did
not cause the appliance to shut down, the display may show a fault
code that is the result of several faults added together.
Listed below are the fault codes which will allow you to enable
emergency mode.
Fault code displayed
8 8
10 Fault code 8 + fault code 2
12 8+4
24 8+16
26 8+2+16
28 8+4+16
138 8+2+128
140 8+4+128
152 8+16+128
154 8+2+16+128
156 8+4+16+128
When the appliance is operating in emergency mode, the fault
code shown is incremented by 256.
Notifying a qualified contractor
If you cannot remedy the fault, notify your qualified contractor.
To facilitate and speed up your request, provide the number from
the type plate (000000-0000-00000). The type plate can be found
on the left, above the DHW outlet connection.
Sample type plate
000000-0000-000000
D0000035352
1
1 Number on the type plate