Fault Finding - Hotpoint WML540GUK.R Service Information

Indesit Company

FAULT FINDING

IMPORTANT NOTE: Disconnect the machine from Electricity Supply before any testing.
General Information
If the machine has an Earth Fault it can display erroneous fault codes.
Repair any Earth Faults on the machine before using the code guide on the previous page.
Some faults will not show up as error codes:-
The module will not show up a fault if the water to the machine is turned off or if the solenoid
valves are open circuit.
Certain motor faults, will not show as a fault, the door will lock but the machine will not start a
programme. (motor plug disconnected, faulty brushes etc.)
Open circuit field windings will signal fault F01.
If the motor Thermoprotector (toc) - if fitted -operates in the middle of a cycle, the machine will
stop with no fault code indicated, when the thermoprotector (toc) resets the cycle will then restart.
If the element goes open circuit in the middle of a programme and the pressure switch is in the full
position, the machine may not signal a fault but will wash for a long extended period.
Note: This chart refers to both "commutator" (brush motor) and "three phase" (non-brush motor)
models. Refer to text for appropriate information.
FAULT CAUSE
F01 Main PCB, Triac on
board damaged or
components
Feedback fault
Service Manual UK
- Check for water leaks that may affect connectors J009
(Commutator) or J9 (Three-phase) causing the relative contacts to
short;
- Check the motor terminal board (any problems due to aggression
caused by manufacturing chemical residues that may cause short
circuits);
- Check the connection on the wash heating element;
- Check efficiency of connector J001 (Commutator) or J010 (Three-
phase) on the PCB;
- Check connector J001 (Commutator) or J10 (Three-phase) pins 3
and 4 for continuity of the wash heating element (1700 watt - 230
volt) which must be 30 Ohm +/- 10%. Otherwise, renew heating
element;
- Check for water leaks that may affect connectors J006
(Commutator) or J7 (Three-phase) causing the relative contacts to
short;
- Check the terminal board (any problems due to aggression caused
by manufacturing chemical residues that may cause short circuits);
- Check wiring of connectors J006 (Commutator) or J7 (three phase)
/ Pressure switch;
- Disconnect appliance for 2 minutes. Check wiring and connectors
of the dryer heating element on main PCB board side and
component side;
- Check that correct operation has been restored by starting the
Autotest routine;
- Renew main PCB.
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SERVICE ACTIONS
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