Electrolux Professional S.p.A.
Ovens Platform Customer Support
Technical Training & Service
AOS_Q OVENS – Service manual
(593804600 - ENG)
File: AOS ONE service manual (ENG).00.doc ©Copyright 2007 by Electrolux Professional P.9/32
5 Cavity offset calibration (for lev. A and C ovens)
In order to adjust the offset of the cavity probe, enter in parameter programming and set parameters cort
and OCA1 to 0.
Then run a steam cycle for several minutes and check the cavity temperature, which should stabilize at the
water boiling point. If the stabilized cavity temperature is less or greater than the correct water boiling
pointTPF
2
FPT, a corrective value can be stored in parameter OCA1.
After this, set parameter cort to 1and set parameter SEAL (altitude above sea level).
6 Error codes
Errors can be divided into 2 categories: errors (they stop the appliance) and warnings (they do not stop the
appliance).
6.1 Errors
EE2P: Communication error with the EEPROM
E---: If the controller detects one or more parameters which have values not permitting the minimum
operational requirements, an error code will appear on the display, i.e. “E---” followed by the parameter
number. Enter the programming mode and set the correct value according to the parameter list.
EtUC: Cavity over temperature; cavity temperature exceeded value stored in parameter cot.
EtUB: Boiler over temperature; boiler temperature exceeded value stored in parameter bot.
EFUN: Activation of the thermal protection of the motor. On the little temperature display it will appear “UP”
or “DOWN” according it is the thermal protection of the upper motor (and the motor of 6-10 grid ovens) or
lower motor on 20-grid oven. The thermal protection has an automatic reset but in order to continue with
the cooking process, parameter ALFn has to be reset to 0.
Etc: Tripping out of cavity limiter
Etb: Tripping out of boiler limiter
ESCH: Over temperature on the electronic board; check the cooling fan and the ventilation openings on the
bottom of the control panel.
Ept1: cavity probe in open circuit (only the steam cycle – 100 °C can be selected)
Ept2: boiler probe in open circuit (only hot air cycle can be selected)
Ept3: meat probe in open circuit (only time cooking can be selected)
Ept4: by-pass probe in open circuit (only hot air, regeneration or low temperature steam cycle can be
selected)
Ept8: NTC probe in short or open circuit
ECAD: A/D converters not working
Ertc : No communication with the clock. On lev. C set parameter Ertc to zero
E PM: Communication error with PWM system
E SL: Water level probe error. If the boiler heating elements or burners are on for a tiem over that one
defined in parameter tbon without a water charging phase, this error message is activated. To reset it,
parameter ALFn has to be reset to 0.
burn CAUP: Lockout of cavity burner (gas oven) (the upper one in the 20 grid ovens)
burn CAdo: Lockout of lower cavity burner (gas oven) in 20 1/1 and 2/1 ovens
burn boUP: Lockout of boiler burner (gas oven) (the upper one in 20 2/1 ovens)
burn bodo: Lockout of lower boiler burner (gas oven)
6.2 Warnings
EH2O: Before the starting of the cleaning system and during its working, there are some check points of
the water pressure. If the water pressure is too low this warning message appears on the display. Check
the water pressure (1.5÷2.5 bar), check the correct working of the water pressure switch, check if there are
obstructions on the cleaning water inlet pipe (its inner diameter must be 20 mm).
EFLP: Cavity ventilation flap failure; check the motoreducer or the micro switch that detects the close
position of the flap. If the motoreducer does not close the flap within the time set in parameter FLto, EFLP
error appears.
ECLO: Clock error, it appears if the clock was never adjusted
EPrG: Error in reading the phases of a multiphase recipe
EIND: Error in reading the index of the recipes
EDES: Error in reading the description of a recipe
TP
2
PT See Appendix A
