Error message F08 on Ariston Advantage AIB16 ?

F01: Triac Motor short circuit
• Check for any water leaks that can reach connector J9 short circuiting the
relevant contacts
• Check the motor terminal block (a possible problem due to chemical work
residuals corroding the contacts that can cause a short circuit)
• Replace Card

F02: Motor blocked, Tachometrics in Short Circuit/Open
• Check motor if blocked
• Check the efficiency of J9 connector on the card
• Check the tachometric winding checking an ohm resistance reading of 115
- 170 ohm between pins 1 and 2 on wiring connector J9. In case of short
circuit, open circuit check the wiring between pins 1 and 2 of J9 relevant
to the tachometrics. With a three-phase motor, make sure there is ohm
continuity between J9 pins 6 and 7.
• Replace motor
• Replace card

F03: Detected: NTC Open or in Short Circuit or wash heater relay stuck (signalled in
presence of full load)
• Check efficiency of J8 connector contacts on the card
• Check NTC verifying that the ohmic resistance value at room temperature
20°C is approx. 20Kohm on J8 wiring connector pin 11 and 12.
• If the measurement is incorrect check J8/NTC wiring continuity. Check the
same parameter directly on NCT
• Replace NTC
• Replace Card.

F04: Simultaneous empty and overflow (pressure switch stuck on empty). If the
pressure switch contact is stuck on empty the washing machine loads water until
reaching the overflow. The drain pump is automatically started by the contact on
the overflow pressure switch.
• Check the efficiency of J3 connector contacts on the card.
• Check pressure switch status checking J3 wiring connector pins:
- 2-4 ohm continuity - tub empty
- 2-3 ohm continuity - full tub
- 2-1 ohm continuity - tub overfilled, at least halfway up door glass
• Check wiring of connector J3/pressure switch
• Replace pressure switch
• Replace card.

F05: Detected: Pump Blocked or pressure switch empty not reached
• Check the efficiency of J9 connector contacts on the card checking the
presence of 220V current between pins 8 and 9.
• Check pump: if fed
• Check Pump Filter + wall drain
• Change Pump
• Replace Card.

F06: Not on AVD and AVL

F07: Detected: No Absorption Wash Heating Element (the fault is only signalled
with the pressure switch on empty)
• Check the efficiency of J3 connector contacts on the card
• Check the continuity of the wash heater on J3 connector pins 5 and 6. The
1800w 230V heating element has a resistance of 25 ohm.
• Check the connection of pressure switch J3 connector pins 2 and 3: there
must not be ohm continuity (shared with full load).
• Check the connection of pressure switch J3 connector pins 2 and 4: there
must be ohmic resistance
• Replace Heating Element
• Replace Pressure Switch
• Replace Card.

F08: Wash Heater Relay Stuck (signalled in presence of empty) or pressure switch
stuck on Full (simultaneously empty and full)
• Check the efficiency of J3 connector contact on the card
• Check pressure switch status checking J3 wiring connector pins 2 and 4
ohm continuity (it must only be present with tub empty) and pins 2 and 3
ohm continuity (it must only be present with water in the drum) and pins 2
and 1 ohm continuity (it must only be present with water in the tub above
normal level, at least halfway up door glass).
• Check wiring J3/pressure switch
• Check connection of heating element J3 connector pins 5 and 6.
• Replace pressure switch
• Replace Card

F09: Detected: Machine Setup Error (eeprom error)
• In case of production card with eeprom soldered: replace card and eeprom
• In case of replacement of eeprom and card, check the correct housing of
eeprom on card base.

F10: No full and empty signal
• Check the efficiency of J3 connector contacts on the card
• Check pressure switch status checking J3 wiring connector pins:
- 2-4 ohm continuity - tub empty
- 2-3 ohm continuity - full tub
- 2-1 ohm continuity - tub overfilled, at least halfway up door glass
• Check wiring of connector J3/Pressure switch
• Replace Pressure Switch
• Replace Card.

F11: Detected: No Pump Feedback (Drain pump disconnected or winding broken)
• Check the efficiency of J9 connector contacts on the card
• Check continuity of the Pump on J15 connector pins 1 and 2 (in case of
washing machine with Easy Door function) or on J9 connector pins 8 and 9
(in case of conventional door lock), checking resistive value equal to 170 ohm.
• Check wiring of connector J15 (or J9)/Pump
• Replace Pump
• Replace Card.

F12: No Communication Display Card/LED-Main Card
• Check the efficiency of contacts on card of J11 connector
• Check the continuity of J11 connector-display card 5-pin connector
• Replace Main Card
• Replace Display Card/LED.

F17: Door lock unfed/open (with Easy Door)
• Check the presence of 230V mains power on J4 wiring connector inserted
on board between pins 3 and 4, (not present with machine on standby)
the presence of power from 230V door lock between pins 3 and 5
• Check the ohm continuity of door microswitch (with door closed on and
off) on J4 connector inserted on the board between pins 1 and 2
• Check continuity of J4/door lock wiring
• Check door hooking
• Replace door lock
• Replace card.

F17: Door lock unfed/open (conventional door lock, not Easy Door)
• Check the presence of 230V mains power onJ4 wiring connector inserted
on board between pins 2 and 3, (not present with machine on standby)
the presence of power from 230V door lock between pins 3 and 1
• Check door hooking
• Replace door lock.
• Replace card

F18: DSP (Digital Signal Processor) / microprocessor error
• Replace card

Jørgen
February 2008

F08 Heater relay cannott be activated
hi this is part of the main control board call an engineer

phil grimshaw
October 2006