Zanussi LIBERO IWOKEC-1P/1ZT, Service Manual

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LIBERO LINE WOK INDUCTION
4.8.7.1 ALARM CODE LIST
This alarm list is generic for all libero line appliances that have Tesla or Foucault generator.
Refer also to the § GLOSSARY AND ABBREVIATIONS
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ode
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Alarm name Alarm description
Alarm trou-
ble shoot-
ing
E031 U.I Yes No UI_CFG_ALM
Missing configuration or defect CRC of complete configura-
tion block.
The alarm is showed on left display only.
NOTE 1: With Tesla POW only, HOB and WOK application
this alarm is overridden by E821 after about 30 seconds.
NOTE 2: With Tesla POW only, FRYTOP application this
alarm at first overridden by E441 in about ten seconds, then
overridden by E821 after about 30 seconds.
NOTE 3: This alarm prevents entering on CUSTOMER and
SERVICE menu.
Wrong
spare part,
communica-
tion
cable
discon-
nected
E311
E312
POW Yes Yes 400V_DETECTION Tesla POW only: Power supply overvoltage.
Its purpose is to detect wrong phase-to-phase connection
(400V instead of 230V).
Check volt-
age
E321
E322
POW No Yes LOW_MAINS_VOL
TAGE Too low power supply voltage. Tesla POW: About 150V for
detection, 160V for reset (internal induction circuits measure,
after APD relay).
Foucault POW: About 310V for detection and reset, no hys-
teresis (internal induction circuits measure, after APD relay).
About 10 seconds under the threshold are required to gener-
ate the error.
Check volt-
age
E401
E402
POW Yes Yes TEMP SENS
FMEA_Z0 (Front
zone on Tesla
POW)
TEMP SENS
FMEA_Z1 (Rear
zone on Tesla
POW)
Coil safety temperature sensor bad circuit or short circuit.
Bad circuit means
temperature ≥ 290°C on Tesla POW.
Bad circuit means temperature ≥ 300°C on Foucault POW.
For
Tesla POW, HOB & WOK , diagnostic is executed on both
generators (Front and Rear) even if not really used in a spe-
cific configuration, i.e. in a single zone configuration. For this
reason, a dummy sensor (100kOhm resistance) must be con-
nected on the unused input.
Check temp
sensors
E411
E412
POW Yes Yes TEMP SENS
OPEN_Z0 (Front
zone on Tesla
POW)
TEMP SENS
OPEN_Z1 (Rear
zone on Tesla
POW) Coil safety temperature sensor open or not connected.
For Tesla POW, HOB & WOK , diagnostic is executed on both
generators (Front and Rear) even if not really used in a spe-
cific configuration, i.e. in a single zone configuration. For this
reason, a dummy sensor (100kOhm resistance) must be con-
nected on the unused input.
Check
temp. sen-
sors
E421
E422
POW Yes/
No
Yes ZONES HI-TEMP Tesla POW, HOB & WOK: Overtemperature on front or
rear coil (measured on coil safety sensor). The error is
unique for all temperature sensor inside an POW. 260 °C for
activation, 215°C for deactivation. No slope control.
Tesla POW, FRYTOP: Overtemperature on front or rear
coil (measured on coil safety sensor and plate temperature
sensor). The error is unique for all temperature sensor (coil
plate) inside an POW.
Coil safety sensor: 140 °C for activation, 95°C for deactiva-
tion. No slope control. Plate temperature sensor: 290 °C for
activation, no self-resetting. No slope control.
Foucault POW, HOB & WOK: Overtemperature on coil
safety sensor. 280 °C for activation, 255°C for deactivation.
In addition, starting 150°C the alarm is also arisen by a too
fast temperature increment. In this case the alarm is not self-
resetting.
Check
cleaning fil-
ters, clean-
ing of venti-
lators fans
(dirt accu-
mulation on
fan blades)