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#1
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Deep freeze temperature varying over several hours
We have an Arctis freezer - not sure what model, but it's a tall one about 5
feet high, which was left by the previous owners of the house. The temperature on the display used to be constant at -18 degrees C, but over the past couple of weeks it's started fluctuating between -18 and -12 over the course of several hours. The times when it is showing a warmer temperature are not necessarily when it has been opened; nor are they times when the room is warmer, either because of sunlight or daily variations in the temperature of the Aga (which also came with the house). There are times when it's showing -12 but the compressor isn't running, so it's not as if the refrigeration mechanism is struggling to achieve the temperature that the thermostat is set at. Do freezers tend to show a higher temperature on the display when they are going through a periodic "frost free" thawing stage? How frequently do freezers typically do a frost-free cycle - daily, weekly? I've not checked with a thermometer to see if the actual internal temperature (in a consistent location) varies - ie whether it's the display or the cooling which are varying. I've never noticed our own Samsung freezer which we brought with us displaying a temperature which varies by more than +/- 1 deg C from the -18 that it is set at. |
#2
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Deep freeze temperature varying over several hours
NY wrote:
We have an Arctis freezer - not sure what model, but it's a tall one about 5 feet high, which was left by the previous owners of the house. The temperature on the display used to be constant at -18 degrees C, but over the past couple of weeks it's started fluctuating between -18 and -12 over the course of several hours. The times when it is showing a warmer temperature are not necessarily when it has been opened; nor are they times when the room is warmer, either because of sunlight or daily variations in the temperature of the Aga (which also came with the house). There are times when it's showing -12 but the compressor isn't running, so it's not as if the refrigeration mechanism is struggling to achieve the temperature that the thermostat is set at. Do freezers tend to show a higher temperature on the display when they are going through a periodic "frost free" thawing stage? How frequently do freezers typically do a frost-free cycle - daily, weekly? I've not checked with a thermometer to see if the actual internal temperature (in a consistent location) varies - ie whether it's the display or the cooling which are varying. I've never noticed our own Samsung freezer which we brought with us displaying a temperature which varies by more than +/- 1 deg C from the -18 that it is set at. As far as I remember a frost free will go on defrost cycle every ? hours and the temperature will go up in the cabinet. The increase in temperature is only to be expected. Don't get paranoid. |
#4
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Deep freeze temperature varying over several hours
"Brian Gaff" wrote in message
... Older freezers were not as well insulated and insulation can go leaky over time due to ingress of damp or any kind of seal issue. I'd have thought that -12 if confirmed is probably just the self defrosting. Mine does this and nothing has poisoned me as yet. I too work on the basis of "I've not been poisoned yet so it must be OK". The fact that the temperature returns to -18 after a hour or so and that it isn't worse when the kitchen ambient temperature is warmer, suggests that it's not leaky seals. Ice cream shows no sign of large ice crystals that you get if it's partly thawed. Odd that we've only started noticing it recently, when I presume its been doing its self-defrosting cycles for the past 2 months since we've lived here. Perhaps we're just not very observant... |
#5
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Deep freeze temperature varying over several hours
NY wrote:
"Brian Gaff" wrote in message ... Older freezers were not as well insulated and insulation can go leaky over time due to ingress of damp or any kind of seal issue. I'd have thought that -12 if confirmed is probably just the self defrosting. Mine does this and nothing has poisoned me as yet. I too work on the basis of "I've not been poisoned yet so it must be OK". The fact that the temperature returns to -18 after a hour or so and that it isn't worse when the kitchen ambient temperature is warmer, suggests that it's not leaky seals. Ice cream shows no sign of large ice crystals that you get if it's partly thawed. Odd that we've only started noticing it recently, when I presume its been doing its self-defrosting cycles for the past 2 months since we've lived here. Perhaps we're just not very observant... Ive never noticed an auto defrost cycle other then when it failed- the heated was on too long. That was caused by a timer that got stuck - at least that was Whirlpools diagnosis (it was under warranty). It was troublesome before it failed so dramatically and defrosted everything. The timer was just a simple mechanical device which turned on a small heater every for a set time periodically. I dont think it even sensed the ice build up. |
#6
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Deep freeze temperature varying over several hours
On Tuesday, 13 August 2019 15:17:24 UTC+1, NY wrote:
We have an Arctis freezer - not sure what model, but it's a tall one about 5 feet high, which was left by the previous owners of the house. The temperature on the display used to be constant at -18 degrees C, but over the past couple of weeks it's started fluctuating between -18 and -12 over the course of several hours. The times when it is showing a warmer temperature are not necessarily when it has been opened; nor are they times when the room is warmer, either because of sunlight or daily variations in the temperature of the Aga (which also came with the house). There are times when it's showing -12 but the compressor isn't running, so it's not as if the refrigeration mechanism is struggling to achieve the temperature that the thermostat is set at. Do freezers tend to show a higher temperature on the display when they are going through a periodic "frost free" thawing stage? How frequently do freezers typically do a frost-free cycle - daily, weekly? I've not checked with a thermometer to see if the actual internal temperature (in a consistent location) varies - ie whether it's the display or the cooling which are varying. I've never noticed our own Samsung freezer which we brought with us displaying a temperature which varies by more than +/- 1 deg C from the -18 that it is set at. If it's a frost free, this behaviour is normal, it's doing a defrost cycle. NT |
#7
Posted to uk.d-i-y
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Deep freeze temperature varying over several hours
"NY" wrote in message ... We have an Arctis freezer - not sure what model, but it's a tall one about 5 feet high, which was left by the previous owners of the house. The temperature on the display used to be constant at -18 degrees C, but over the past couple of weeks it's started fluctuating between -18 and -12 over the course of several hours. The times when it is showing a warmer temperature are not necessarily when it has been opened; nor are they times when the room is warmer, either because of sunlight or daily variations in the temperature of the Aga (which also came with the house). There are times when it's showing -12 but the compressor isn't running, so it's not as if the refrigeration mechanism is struggling to achieve the temperature that the thermostat is set at. Do freezers tend to show a higher temperature on the display when they are going through a periodic "frost free" thawing stage? That’s not frost free, that’s cyclic defrost. Frost free pumps very cold air into the freezer and never have a thawing stage. That’s where the name comes from, there never is any frost to thaw. How frequently do freezers typically do a frost-free cycle - daily, weekly? I've not checked with a thermometer to see if the actual internal temperature (in a consistent location) varies - ie whether it's the display or the cooling which are varying. I've never noticed our own Samsung freezer which we brought with us displaying a temperature which varies by more than +/- 1 deg C from the -18 that it is set at. |
#8
Posted to uk.d-i-y
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Deep freeze temperature varying over several hours
Rod Speed wrote:
"NY" wrote in message ... We have an Arctis freezer - not sure what model, but it's a tall one about 5 feet high, which was left by the previous owners of the house. The temperature on the display used to be constant at -18 degrees C, but over the past couple of weeks it's started fluctuating between -18 and -12 over the course of several hours. The times when it is showing a warmer temperature are not necessarily when it has been opened; nor are they times when the room is warmer, either because of sunlight or daily variations in the temperature of the Aga (which also came with the house). There are times when it's showing -12 but the compressor isn't running, so it's not as if the refrigeration mechanism is struggling to achieve the temperature that the thermostat is set at. Do freezers tend to show a higher temperature on the display when they are going through a periodic "frost free" thawing stage? That’s not frost free, that’s cyclic defrost. Frost free pumps very cold air into the freezer and never have a thawing stage. That’s where the name comes from, there never is any frost to thaw. Really? "Frost-Free" refrigerator/freezer units usually use a heating element to defrost their evaporators, a pan to collect and evaporate water from the frost that melts from the cold plate and/or evaporator coil, a timer which turns off the compressor and turns on the defrost element usually from once to 4 times a day for ... |
#9
Posted to uk.d-i-y
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Lonely Psychopathic Senile Ozzie Troll Alert!
On Wed, 14 Aug 2019 13:59:29 +1000, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again: Do freezers tend to show a higher temperature on the display when they are going through a periodic "frost free" thawing stage? That¢s not frost free, that¢s cyclic defrost. More bull**** from the "all-knowing" senile Australian bull**** artist! Reserve your "wisdom" for Australian ngs, you trolling senile asshole from Oz! -- Website (from 2007) dedicated to the 85-year-old trolling senile cretin from Oz: https://www.pcreview.co.uk/threads/r...d-faq.2973853/ |
#10
Posted to uk.d-i-y
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Deep freeze temperature varying over several hours
"Mr Pounder Esquire" wrote in message ... Rod Speed wrote: "NY" wrote in message ... We have an Arctis freezer - not sure what model, but it's a tall one about 5 feet high, which was left by the previous owners of the house. The temperature on the display used to be constant at -18 degrees C, but over the past couple of weeks it's started fluctuating between -18 and -12 over the course of several hours. The times when it is showing a warmer temperature are not necessarily when it has been opened; nor are they times when the room is warmer, either because of sunlight or daily variations in the temperature of the Aga (which also came with the house). There are times when it's showing -12 but the compressor isn't running, so it's not as if the refrigeration mechanism is struggling to achieve the temperature that the thermostat is set at. Do freezers tend to show a higher temperature on the display when they are going through a periodic "frost free" thawing stage? That’s not frost free, that’s cyclic defrost. Frost free pumps very cold air into the freezer and never have a thawing stage. That’s where the name comes from, there never is any frost to thaw. Really? "Frost-Free" refrigerator/freezer units usually use a heating element to defrost their evaporators, a pan to collect and evaporate water from the frost that melts from the cold plate and/or evaporator coil, a timer which turns off the compressor and turns on the defrost element usually from once to 4 times a day for ... Nope, that’s cyclic defrost, as I said. |
#11
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Deep freeze temperature varying over several hours
On Wednesday, 14 August 2019 05:07:01 UTC+1, Rod Speed wrote:
"NY" wrote in message ... We have an Arctis freezer - not sure what model, but it's a tall one about 5 feet high, which was left by the previous owners of the house. The temperature on the display used to be constant at -18 degrees C, but over the past couple of weeks it's started fluctuating between -18 and -12 over the course of several hours. The times when it is showing a warmer temperature are not necessarily when it has been opened; nor are they times when the room is warmer, either because of sunlight or daily variations in the temperature of the Aga (which also came with the house). There are times when it's showing -12 but the compressor isn't running, so it's not as if the refrigeration mechanism is struggling to achieve the temperature that the thermostat is set at. Do freezers tend to show a higher temperature on the display when they are going through a periodic "frost free" thawing stage? Thats not frost free, thats cyclic defrost. Frost free pumps very cold air into the freezer and never have a thawing stage. Thats where the name comes from, there never is any frost to thaw. wrong as always. What's new. |
#12
Posted to uk.d-i-y
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Lonely Psychopathic Senile Ozzie Troll Alert!
On Wed, 14 Aug 2019 20:14:31 +1000, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again: Really? "Frost-Free" refrigerator/freezer units usually use a heating element to defrost their evaporators, a pan to collect and evaporate water from the frost that melts from the cold plate and/or evaporator coil, a timer which turns off the compressor and turns on the defrost element usually from once to 4 times a day for ... Nope, that¢s cyclic defrost, as I said. Nope, senile Australian idiot: it's ALSO "frost-free"! -- dennis@home to retarded senile Rot: "sod off rod you don't have a clue about anything." Message-ID: |
#13
Posted to uk.d-i-y
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Deep freeze temperature varying over several hours
On 13/08/2019 21:21, NY wrote:
"Brian Gaff" wrote in message ... Older freezers were not as well insulated and insulation can go leaky over time due to ingress of damp or any kind of seal issue. I'd have thought that -12 if confirmed is probably just the self defrosting. Mine does this and nothing has poisoned me as yet. I too work on the basis of "I've not been poisoned yet so it must be OK". The fact that the temperature returns to -18 after a hour or so and that it isn't worse when the kitchen ambient temperature is warmer, suggests that it's not leaky seals.* Ice cream shows no sign of large ice crystals that you get if it's partly thawed. Odd that we've only started noticing it recently, when I presume its been doing its self-defrosting cycles for the past 2 months since we've lived here. Perhaps we're just not very observant... Could be because the voltage is varying more than it used to. |
#14
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Deep freeze temperature varying over several hours
On Thursday, 15 August 2019 17:38:31 UTC+1, Andrew wrote:
On 13/08/2019 21:21, NY wrote: "Brian Gaff" wrote in message ... Older freezers were not as well insulated and insulation can go leaky over time due to ingress of damp or any kind of seal issue. I'd have thought that -12 if confirmed is probably just the self defrosting. Mine does this and nothing has poisoned me as yet. I too work on the basis of "I've not been poisoned yet so it must be OK". The fact that the temperature returns to -18 after a hour or so and that it isn't worse when the kitchen ambient temperature is warmer, suggests that it's not leaky seals.Â* Ice cream shows no sign of large ice crystals that you get if it's partly thawed. Odd that we've only started noticing it recently, when I presume its been doing its self-defrosting cycles for the past 2 months since we've lived here. Perhaps we're just not very observant... Could be because the voltage is varying more than it used to. it could not. |
#15
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Deep freeze temperature varying over several hours
"NY" wrote in message
... We have an Arctis freezer - not sure what model, but it's a tall one about 5 feet high, which was left by the previous owners of the house. The temperature on the display used to be constant at -18 degrees C, but over the past couple of weeks it's started fluctuating between -18 and -12 over the course of several hours. The times when it is showing a warmer temperature are not necessarily when it has been opened; nor are they times when the room is warmer, either because of sunlight or daily variations in the temperature of the Aga (which also came with the house). There are times when it's showing -12 but the compressor isn't running, so it's not as if the refrigeration mechanism is struggling to achieve the temperature that the thermostat is set at. The latest in the saga of the freezer... We noticed that it was spending longer and longer at around -14 to -12, and less and less time at -18. Then last night the alarm went off because the temperature had reached -11. So we hastily moved everything into other freezers (including starting up one that we used to use only in the summer for freezing all the veg and fruit that we grew) and turned the misbehaving one off. When I investigated behind a bit of trim I found that the cooling pipes in the freezer compartment were surrounded by a large block of ice. So much for frost free ;-) Having left the freezer off overnight, about a litre of water collected in the vessel where it normally collects during the thaw cycle and then evaporates in the heat of the compressor. It looks as if the freeze/thaw cycles had stopped working properly and the freezer was never defrosting properly before the thermostat started another freeze cycle. It's cooling down again now (it's gone from +21 to +8 so far) so I'll see whether it gets to -18 and stays there. And if it starts doing it again in the future, at least I'll know what to check. |
#16
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Deep freeze temperature varying over several hours
On Tuesday, 20 August 2019 09:32:27 UTC+1, NY wrote:
"NY" wrote in message ... We have an Arctis freezer - not sure what model, but it's a tall one about 5 feet high, which was left by the previous owners of the house. The temperature on the display used to be constant at -18 degrees C, but over the past couple of weeks it's started fluctuating between -18 and -12 over the course of several hours. The times when it is showing a warmer temperature are not necessarily when it has been opened; nor are they times when the room is warmer, either because of sunlight or daily variations in the temperature of the Aga (which also came with the house). There are times when it's showing -12 but the compressor isn't running, so it's not as if the refrigeration mechanism is struggling to achieve the temperature that the thermostat is set at. The latest in the saga of the freezer... We noticed that it was spending longer and longer at around -14 to -12, and less and less time at -18. Then last night the alarm went off because the temperature had reached -11. So we hastily moved everything into other freezers (including starting up one that we used to use only in the summer for freezing all the veg and fruit that we grew) and turned the misbehaving one off. When I investigated behind a bit of trim I found that the cooling pipes in the freezer compartment were surrounded by a large block of ice. So much for frost free ;-) Having left the freezer off overnight, about a litre of water collected in the vessel where it normally collects during the thaw cycle and then evaporates in the heat of the compressor. It looks as if the freeze/thaw cycles had stopped working properly and the freezer was never defrosting properly before the thermostat started another freeze cycle. It's cooling down again now (it's gone from +21 to +8 so far) so I'll see whether it gets to -18 and stays there. And if it starts doing it again in the future, at least I'll know what to check. It typically takes more than overnight to defrost it all, so expect a repeat soon NT |
#17
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Deep freeze temperature varying over several hours
wrote in message
... It typically takes more than overnight to defrost it all, so expect a repeat soon Ah... The cooling pipes that were visible in a heat exchanger at the top of the freezer compartment looked completely clear of ice, and no more water was dripping down the drain pipe into the heated vessel above the compressor. I wonder if I should have left it a bit longer. I thought that about 12 hours at 20 deg C would have melted all the ice. So far, the freezer is at about fridge temperature, so it's got a long way to go. |
#18
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Deep freeze temperature varying over several hours
On Tuesday, 20 August 2019 10:05:07 UTC+1, NY wrote:
tabbypurr wrote in message ... It typically takes more than overnight to defrost it all, so expect a repeat soon Ah... The cooling pipes that were visible in a heat exchanger at the top of the freezer compartment looked completely clear of ice, and no more water was dripping down the drain pipe into the heated vessel above the compressor. I wonder if I should have left it a bit longer. I thought that about 12 hours at 20 deg C would have melted all the ice. So far, the freezer is at about fridge temperature, so it's got a long way to go. Maybe you're right in this case. In frost frees where the ice builds up is normally insulated. But if it stopped melting... fairy nuff. NT |
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