Deforst mechanism I'm trying to turn off the defrost mechanism on my hotpoint 8232 slimline model. (the little button inside the temperature control dial). I don't have the instruction manual (It's second hand), any advice please

Could you please recheck for the model number. R134A is a reference to the coolant used in the freezer mechanism.
Orange is often a reference to the 'Fast Freeze' function being turned On. Green is showing the freezer unit is at the correct temperature. Red is warning the freezer is Too warm. Some freezers are fitted with an 'Economy' function where the freezer can be run at a lower power level when not used regularly such as when on holiday.

I am not sure if you said you checked the=> 5303918476 Defrost Control Board or here=> 5303918476 If you replaced the defrost thermostat inside the freezer that is most likely not the problem. These defrost control boards will really cause strange things to happen. Sometimes by unplugging and taking out the control board you will see burn marks or signs of heat damage on the printed circuit, not always. Unplug and open the control panel inside the fresh food compartment=> GLRS237ZW2 Control Panel

You will see part/location number 23 is your 5303918476 Defrost Control Board If I misunderstand please let me know so I can help you resolve this problem. Thanks Sea Breeze

the defrost circuit has a problem, allowing the frost/ice buildup..
remove the shelves, and back lower cover in the rear of the freezer to expose the evaporator coil, defrost heater, and defrost thermostat.
the defost heater should have continuity through it and the defrost thermostat will have continuity when frozen but test open when warmed.. if either bad replace.
if both test good look for bad connections in the freezer compartment wiring, and moly connectors otherwise the temperature controls are bad and it is an electronic assembly that incorporates the temperature controls with the deforst timer controls..
hope this helps,
best of luck,
ttfn

Could be that the automatic defrost feature is not operating properly. You can go here if you want to find out how you might be able to fix it yourself, but you'll need to be comfortable with diagnostic testing and taking your frig apart. Otherwise, it's very repairable...contact a reputable repair company to come check it out.

sounds like the cap tube for the temp control is broken and they can;t be fixed just replace it..unplug and let defrost

You got the right idea. your fridge have a deforst problem, and it can be cause by a number of items. 1. the timer, 2 the defrost temperature control. 3 the defrost element itself.
Before you use the hair dryer when there is ice forming in the back panel, try to turn the timer and see wheather you can set it to defrost cycle manually if you can then the timer need to be change. the 2 and 3 item is a bit more work for normal people to deal with, you better call in a serviceman and watch him how he handle it so you can try it yourself next time. God Bless

After you taken the back panel off and see a lot of ice forming on the coil before you use your hairdryer you should locate the timer and turn the center of the timer manually into defrost cycle. If you can see or hear the ice melting then your problem is the timer defective. Change the timer and that is all. But if it doesn't do anything then you will need a little bit more on electrical knowledge to deal with the rest on defrost temperature control and the element itself. Hope this help, God Bless.

you need to have a defrost or the freezer will not work unplugging the time clock then the compressor will not work.if it is staying in defrost their is a manual stem you have to turn.Tom

Check the condenser fan motor (next to compressor) make sure it is running. Next change relay (inside black box) on compressor.

Put Charcole brickets in the refrigerator. Charcole works better than baking soda and usually take care of the smell.