Hotpoint WML540GUK.C, Service Information

Page: 23 / 33

23 of 33
Indesit Company
Service Manual UK English
F02 Motor tripped,
motor tacho
generator open
circuit or short
circuit - Check for water leaks that may affect connector J009 causing
the contacts to short circuit;
- Check to ensure motor is not mechanically jammed or seized;
- Check efficiency of the contacts on connector
J009 on the PCB;
- Check the motor side connector;
- Check motor winding and check that the impedance value on
wiring connector J009 between pins 3 and 4, 4 and 5, 3 and 5 is
less than 100 Ohm; (three phase)
- Check the tacho generator winding and check that the
impedance value on wiring connector
J009 between pins 1 and 2
is between 115 and 170 Ohm;
- Check the tacho generator wiring;
- Disconnect appliance for 2 minutes. Check that correct
operation has been restored by starting the Autotest routine;
- Renew motor;
- Renew PCB.
F03 NTC wash sensor
open / short circuit - Check efficiency of contacts on connector J005 (commutator) or
J12 (three-phase) on PCB;
- Check NTC ensuring that the impedance value at ambient
temperature (20°C) on wiring connector
J005 (commutator) or
J12 (three-phase) pins 1 and 2 is approximately 20 KOhm
- If measurement is incorrect check continuity of wiring J005
(commutator) or J12 (three phase), pins 1 and 2 / NTC;
- Check the same parameter directly on the NTC (20 KOhm);
- Renew NTC;
- Renew PCB.
F05 Pressure switch
empty condition
not reached or
drain pump
jammed - If status type pressure switch check correct operation of
component;
- Check efficiency of contacts of connector
J006 (commutator) or
J7 (three phase) on PCB;
- Check wiring of connectors J006 (Commutator) or J7 (three
phase) / Pressure switch;
- Check continuity of pump on connectors J004 (commutator) or
J11 (three-phase), pins 4 and 5 (in case of classic door lock);
check that impedance value is 170 Ohm
+1-
10%;
- Check wiring of connectors J004 (commutator) or J11 (three-
phase), pins 4 and 5 / pump;
- Check pump and wall drain outlet;
- Renew drain pump;
- Empty tank, reprogram Main PCB then start autotest routine;
- Renew linear pressure switch;
- Renew PCB.