29 of 37
Indesit
Company
Service Manual UK
English
Thermistor Resistance Readings:
FAULT
Cause
Control Action
F12
No communication between
display module and control
module.
• Check connector J9 on module;
• Check wiring between module connector J9 and display;
• Check display connector;
• Replace module, display or wiring as required.
F13
Rear thermistor open or
short circuit.
• 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.
F14
Upper element failure
• 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.
F15
Upper element is on when it
should be off.
• 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).
F16
Not used.
F17
Master Relay contacts
welded closed.
• Replace module.
If testing for a Heater related fault, test on a Cotton High Heat setting or
a Timed setting with High Heat enabled.
Temperature
Resistance ( +/- 5%)
20°C
614 K Ohms
25°C
470 K Ohms
50°C
134 K Ohms
75°C
43.8 K Ohms
100°C
16.1 K Ohms
130°C
5.6 K Ohms
