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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
E031
U.I
Yes
E311
POW
Yes
E312
E321
POW
No
E322
E401
POW
Yes
E402
E411
POW
Yes
E412
E421
POW
Yes/
No
E422
Alarm name
No
UI_CFG_ALM
Yes
400V_DETECTION
Yes
LOW_MAINS_VOL
TAGE
Yes
TEMP SENS
FMEA_Z0 (Front
zone on Tesla
POW)
TEMP SENS
FMEA_Z1 (Rear
zone on Tesla
POW)
Yes
TEMP SENS
OPEN_Z0 (Front
zone on Tesla
POW)
TEMP SENS
OPEN_Z1 (Rear
zone on Tesla
POW)
Yes
ZONES HI-TEMP
Alarm description
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.
Tesla POW only: Power supply overvoltage.
Its purpose is to detect wrong phase-to-phase connection
(400V instead of 230V).
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.
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.
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.
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
safety + 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.
Alarm trou-
ble shoot-
ing
Wrong
spare part,
communica-
tion
cable
discon-
nected
Check volt-
age
Check volt-
age
Check temp
sensors
Check
temp.
sen-
sors
Check
cleaning fil-
ters, clean-
ing of venti-
lators fans
(dirt accu-
mulation on
fan blades)
63
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