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hello and good afternoon all. Does any no of any way to test these stats or even get a readin on the meter for them
……………………………cheers………………..
Re: hotpoint element stats all wma wm wf wt wd models
yes i mean the thermistor get them confussed sorry
Re: hotpoint element stats all wma wm wf wt wd models
Hi
You would need the tech sheet for the specific appliance which will have a table to which the resistence reading you glean will correspond to a temperature, obviously if they match eg 120k on meter and you measure temp as 20C and table gives reference 120k = 22C then you on a winner.HTH
GregRe: hotpoint element stats all wma wm wf wt wd models
Hi
Thanks for PM gcb.
Just to clarify, you take the readings of the thermister in situ, ie whilst still inserted in heater unit etc; and with the wires from appliance to it disconnected.
No power is required to appliance either.Greg
Re: hotpoint element stats all wma wm wf wt wd models
A thermistor is a temperature-sensing element composed of sintered semiconductor material which exhibits a large change in resistance proportional to a small change in temperature. Thermistors usually have negative temperature coefficients which means the resistance of the thermistor decreases as the temperature increases. However, thermistors are fairly limited in their temperature range, working only over a nominal range of 0°C to 100°C . 😉
Therefore a mean average resistance readings vary dependent on the size of the thermistor and its location on the appliance. Manufacturers sometimes state their readings in service manuals but as a rough guide: –
0 °C = 35kOhms
25°C = 13kOhms
45°C = 7kOhms
60°C = 3.5kOhms
90°C = 1kOhmOn an typical washing machine testing the thermistor at room temperature you should expect a reading somewhere between 25k and 15k. 😉
They very often go either open circuit (between the terminals) or short circuit (to earth), and therefore if you get a reading something similar to the above list, chances are the thermistor is fine. 🙂
Re: hotpoint element stats all wma wm wf wt wd models
Martin wrote:
They very often go either open circuit (between the terminals) or short circuit (to earth), and therefore if you get a reading something similar to the above list, chances are the thermistor is fine. 🙂Unless its one of those whirlpool dishwasher ones that test OK but are faulty 😕 :rolls:
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