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I have a Hotpoint Mistral FF91S Fridge Freezer. Many years ago i ran into the problem where the fridge would not get cold, but the freezer would. Replacing both green and yellow thermistors fixed that problem.
Fast forward 5 years, i experienced the same problem, problem is, can’t find the green thermistor anywhere, out of stock, so i purchased the yellow thermistor seeing as the freezer seemed to be working fine thought it would be worth a try.
Installed the Yellow thermistor and it worked….for about 3 days, now the Fridge is back to NOT cooling again and weirdly, the freezer instead of going down to -22c it goes to about -14c and no lower. Fridge is room temperature. I tried disconnecting the Thermistors and reattaching them; no luck. No excessive ice build up or anything.
1. Did i kill the new Yellow thermistor because i didn’t change the green one as well? Is that even possible?
2. Why did it work perfectly for 3 days only to stop?
3. Or will replacing the Green thermistor fix this?Re: Hotpoint Fridge Freezer (thermistor problem) — Mistral
Yesterday morning i replaced the Green Thermistor with a new one (replaced the Yellow earlier as mentioned); however, it has made no difference as the fridge is still at room temperature and the freezer is still not at -22 instead hovers around -14.
I did notice a small crack along where one of the food storage compartments slides in, no one can tell me whether that was there before the fault or only just appeared, however, yesterday i covered it up with some aluminium tape but it has made no difference.
Any ideas?
Re: Hotpoint Fridge Freezer (thermistor problem) — Mistral
Put a bowl of boiling water on top of a towel inside the freezer for about 3 hours, then took it out and left the doors open overnight; then turned the unit on in the afternoon with nothing in, and unfortunately it still didn’t work. Freezers still hovering around -14c instead of -22c for some reason and keeps getting slight warmer only to return to -14c. Fridge is room temperature and has no cool air circulating.
So both Yellow and Green Thermistors replaced.
Small crack sealed with layers of aluminium tape.
Manually defrosted.And still not working. Anyone have any ideas? Went instore to buy a new one today, wouldn’t mind trying one more time to fix the faulty one before it goes to it’s final grave.
Someone was telling me apparently freezers can lose some kind of gas in which case they might need refilling? Is that the case for frost free fridge freezers? Again, it’s a Hotpoint FF91S.
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