Modern washing machines indicate error codes when faults occur. The older and more basic ones usually flash a single light a set number of times in a cycle.
On some old Hotpoint and Indesit washing machines error F03 might be indicated by the door lock neon light flashing 3 times, pausing for half a second or so and repeating. Other models may display the error code in a digital display – eg. F03. Some can also indicate error codes using a combination of flashing option lights.
Hotpoint or Indesit error code F03
On this model F03 means “NTC fault: Check Thermistor and module connections”
The Hotpoint WD (& WF) range of washing machines can indicate error codes using the last method. Here’s an example of a model WD 440G with the following option buttons
- Drying High Heat
- Reduce Creases
- Rinse Hold
- Time Saver
- Extra Rinse
Where number 3 and number 4 lights are flashing (as well as the on off switch) this indicates error code F03
What is an NTC?
The NTC is the thermistor, which is a modern-day thermostat. It’s sometimes inserted into a tube in the heating element between the main live and neutral connections and sometimes it can be a small round stat close by. I have a description of the NTC with some diagnostic help in this article – How to test an NTC thermistor
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