Indesit tcud93b Service Information page 29

Indesit Company
FAULT Cause
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.
If testing for a Heater related fault, test on a Cotton High Heat setting or
Thermistor Resistance Readings:
Temperature
20°C
25°C
50°C
75°C
100°C
130°C
Service Manual UK
• 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).
• Replace module.
a Timed setting with High Heat enabled.
Resistance ( +/- 5%)
614 K Ohms
470 K Ohms
134 K Ohms
43.8 K Ohms
16.1 K Ohms
5.6 K Ohms
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Control Action
English