Indesit tcud93b Service Information page 26

Indesit Company
F10 Open circuit in the heater
Common wiring.
Open circuit pump circuit. • Test continuity of pump;
F11
F12 No communication
between display module
and control module.
F13 Rear thermistor open or
short circuit.
F14 Upper element failure
F15 Upper element is on when
it should be off.
F16 Not used.
F17 Master Relay contacts
welded closed.
Thermistor Resistance Readings:
Temperature
20°C
25°C
50°C
75°C
100°C
130°C
Service Manual UK
• Check the wiring between the cycling stat and the module;
• Check wiring between module connector J4 and the heater;
• Test heater elements.
Note:- Frequent cycling stat operation can cause F10, check
filter and condenser for blockages. The module checks and
waits 3 times before displaying F10.
• Check connector J5;
• Check wiring between pump and module J5.
Note:- F11 is usually caused by a fault in the pump circuit not
the module. Auto cycle being used fault displays within 1
minute Time and Wool cycles being used fault displays
at the end of the cycle.
• Check connector J9 on module;
• Check wiring between module connector J9 and display;
• Check display connector;
• Replace module, display or wiring as required.
• Check security of module connector J4;
• Test from J4 connector pins 1 and 2 (approximately 500
Kohms);
• If open circuit, test thermistor and wiring between thermistor
and J4 to locate fault.
• Check security of module connector J4;
• Test between pins 4 and 5 on J4 (approximately 48 ohms);
• If open circuit, test upper element and the wiring between J4
and the heater.
• Check security of module connector J4;
• Check connector for signs of shorting due to moisture;
• Check heater elements and wiring;
• Replace module (F15 would normally be caused by a faulty
module).
• Reverse polarity
• Replace module
Resistance ( +/- 5% )
614 K Ohms
470 K Ohms
134 K Ohms
43.8 K Ohms
16.1 K Ohms
5.6 K Ohms
26 of 37
English