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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
Posted to alt.consumers.uk-discounts.and.bargains,sci.electronics.repair
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OT? - Broken Fridge
Gummo ha escrito: My son's fridge/freezer has been leaking gas tonight. It doesn't look good for the fridge - I told him to turn it off and open the kitchen window. The question is, although Curry's one year guarantee expired a year ago and knowing that, by law, the appliance should last at least 5 years before something like this happens, who do I hold responsible? Currys or Hoover? Gummo cross posted to sci electronics repair. maybe someone there cn shed some light on the cause . |
#2
Posted to alt.consumers.uk-discounts.and.bargains,sci.electronics.repair
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OT? - Broken Fridge
"b" wrote in message ups.com... Gummo ha escrito: My son's fridge/freezer has been leaking gas tonight. It doesn't look good for the fridge - I told him to turn it off and open the kitchen window. Leaking refrigerant or natural gas? The question is, although Curry's one year guarantee expired a year ago and knowing that, by law, the appliance should last at least 5 years before something like this happens, who do I hold responsible? Currys or Hoover? Sometimes there is a 5 year warranty on the sealed unit. Once we would repair these but now, not so much. |
#3
Posted to alt.consumers.uk-discounts.and.bargains,sci.electronics.repair
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OT? - Broken Fridge
b wrote:
Gummo ha escrito: My son's fridge/freezer has been leaking gas tonight. It doesn't look good for the fridge - I told him to turn it off and open the kitchen window. The question is, although Curry's one year guarantee expired a year ago and knowing that, by law, the appliance should last at least 5 years before something like this happens, who do I hold responsible? Currys or Hoover? Gummo Refrigerant is not really harmful so don't fear the leak, but the compressor will burn out if it runs empty. I would begin by contacting the place you bought it, they should either take care of it for you or point you to the correct place to contact. Depending on where the leak is it should not be too difficult to repair. |
#4
Posted to alt.consumers.uk-discounts.and.bargains,sci.electronics.repair
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OT? - Broken Fridge
b wrote:
Gummo ha escrito: My son's fridge/freezer has been leaking gas tonight. It doesn't look good for the fridge - I told him to turn it off and open the kitchen window. The question is, although Curry's one year guarantee expired a year ago and knowing that, by law, the appliance should last at least 5 years before something like this happens, who do I hold responsible? Currys or Hoover? Gummo cross posted to sci electronics repair. maybe someone there cn shed some light on the cause . There is a 5 year warranty on the Compressor ! There is NO guaranty on defrosting using a Knife or Icepick !! I regularly used to tell my junior Technicians, "Don't bother trying to speed up defrosting the Lab Freezers with a knife or icepick". Just put it on a dolly and put it out on the loading dock for the dump , and save everybody a lot of time and trouble. The proper way to Defrost a freezer is Just unplug the freezer and place a large pan of hot water in the freezer and close the door, replace the pan with more hot water until all the ice melts. All you need to do is scratch the Evaporator to destroy it !! This is NOT covered under warranty. Yukio YANO |
#5
Posted to alt.consumers.uk-discounts.and.bargains,sci.electronics.repair
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OT? - Broken Fridge
b ] said:
Gummo ha escrito: My son's fridge/freezer has been leaking gas tonight. It doesn't look good for the fridge - I told him to turn it off and open the kitchen window. The question is, although Curry's one year guarantee expired a year ago and knowing that, by law, the appliance should last at least 5 years before something like this happens, who do I hold responsible? Currys or Hoover? Gummo cross posted to sci electronics repair. maybe someone there cn shed some light on the cause . On the basis that fridge coolant is a, in a secret life, really an electronic component? |
#6
Posted to alt.consumers.uk-discounts.and.bargains,sci.electronics.repair
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OT? - Broken Fridge
Bert writes:
b ] said: Gummo ha escrito: My son's fridge/freezer has been leaking gas tonight. It doesn't look good for the fridge - I told him to turn it off and open the kitchen window. The question is, although Curry's one year guarantee expired a year ago and knowing that, by law, the appliance should last at least 5 years before something like this happens, who do I hold responsible? Currys or Hoover? Gummo cross posted to sci electronics repair. maybe someone there cn shed some light on the cause . On the basis that fridge coolant is a, in a secret life, really an electronic component? Degreaser? Or, that it's an electronic problem once the compressor burns out. Seriously, perflectly legitimate to post here. --- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/ Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/ +Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm | Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html Important: Anything sent to the email address in the message header above is ignored unless my full name AND either lasers or electronics is included in the subject line. Or, you can contact me via the Feedback Form in the FAQs. |
#7
Posted to alt.consumers.uk-discounts.and.bargains,sci.electronics.repair
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OT? - Broken Fridge
"Yukio YANO" wrote in message news:Tr7Jh.13286$DN.1062@pd7urf2no... b wrote: Gummo ha escrito: My son's fridge/freezer has been leaking gas tonight. It doesn't look good for the fridge - I told him to turn it off and open the kitchen window. The question is, although Curry's one year guarantee expired a year ago and knowing that, by law, the appliance should last at least 5 years before something like this happens, who do I hold responsible? Currys or Hoover? Gummo cross posted to sci electronics repair. maybe someone there cn shed some light on the cause . There is a 5 year warranty on the Compressor ! There is NO guaranty on defrosting using a Knife or Icepick !! I regularly used to tell my junior Technicians, "Don't bother trying to speed up defrosting the Lab Freezers with a knife or icepick". Just put it on a dolly and put it out on the loading dock for the dump , and save everybody a lot of time and trouble. The proper way to Defrost a freezer is Just unplug the freezer and place a large pan of hot water in the freezer and close the door, replace the pan with more hot water until all the ice melts. All you need to do is scratch the Evaporator to destroy it !! This is NOT covered under warranty. Yukio YANO I use a hair dryer on low heat even though I own a heat gun. Above freezing air is practically as effective as hot air. Air flow is more important than temperature. Still air has a boundary layer, that acts like insulation, you want to keep broken.Water forms a boundary layer too. That's why bath water feels warmer when you move after a period of soaking. |
#8
Posted to alt.consumers.uk-discounts.and.bargains,sci.electronics.repair
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OT? - Broken Fridge
"Captain Midnight" wrote in message ... I use a hair dryer on low heat even though I own a heat gun. Above freezing air is practically as effective as hot air. Air flow is more important than temperature. Still air has a boundary layer, that acts like insulation, you want to keep broken.Water forms a boundary layer too. That's why bath water feels warmer when you move after a period of soaking. I've used a fan heater on low. |
#9
Posted to alt.consumers.uk-discounts.and.bargains,sci.electronics.repair
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OT? - Broken Fridge
There is NO guaranty on defrosting using a Knife or Icepick !! I regularly used to tell my junior Technicians, "Don't bother trying to speed up defrosting the Lab Freezers with a knife or icepick". Just put it on a dolly and put it out on the loading dock for the dump , and save everybody a lot of time and trouble. The proper way to Defrost a freezer is Just unplug the freezer and place a large pan of hot water in the freezer and close the door, replace the pan with more hot water until all the ice melts. All you need to do is scratch the Evaporator to destroy it !! This is NOT covered under warranty. What would be nice is a valve to short circuit the metering device and let the hot vapor from the compressor flow straight into the evaporator coils. That would defrost it in a matter of minutes. I've heard of a few very old refrigerators that worked this way but nothing modern does it. |
#10
Posted to sci.electronics.repair
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OT? - Broken Fridge
"James Sweet" wrote in message
news:t6oJh.11544$mh7.3573@trnddc04... There is NO guaranty on defrosting using a Knife or Icepick !! I regularly used to tell my junior Technicians, "Don't bother trying to speed up defrosting the Lab Freezers with a knife or icepick". Just put it on a dolly and put it out on the loading dock for the dump , and save everybody a lot of time and trouble. The proper way to Defrost a freezer is Just unplug the freezer and place a large pan of hot water in the freezer and close the door, replace the pan with more hot water until all the ice melts. All you need to do is scratch the Evaporator to destroy it !! This is NOT covered under warranty. What would be nice is a valve to short circuit the metering device and let the hot vapor from the compressor flow straight into the evaporator coils. That would defrost it in a matter of minutes. I've heard of a few very old refrigerators that worked this way but nothing modern does it. Admittedly not a refrigerator, but still a refrigeration system, heat pump HVAC systems do exactly that... the valves in the system are arranged and switched so that as the condenser on the outside unit collects frost and eventually ices up (heat pump mode), the system reverses the valves and the condenser is heated and the ice melts (defrost mode). When the system determines that the ice has melted, it switches the valves back to heat mode. In defrost mode, the system is essentially an air conditioner. -- Dave M MasonDG44 at comcast dot net (Just substitute the appropriate characters in the address) Life is like a roll of toilet paper; the closer to the end, the faster it goes. |
#11
Posted to alt.consumers.uk-discounts.and.bargains,sci.electronics.repair
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OT? - Broken Fridge
"James Sweet" wrote in message news:t6oJh.11544$mh7.3573@trnddc04... What would be nice is a valve to short circuit the metering device and let the hot vapor from the compressor flow straight into the evaporator coils. That would defrost it in a matter of minutes. I've heard of a few very old refrigerators that worked this way but nothing modern does it. One more thing to go wrong with a sealed unit. |
#12
Posted to sci.electronics.repair
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OT? - Broken Fridge
What would be nice is a valve to short circuit the metering device and let the hot vapor from the compressor flow straight into the evaporator coils. That would defrost it in a matter of minutes. I've heard of a few very old refrigerators that worked this way but nothing modern does it. Admittedly not a refrigerator, but still a refrigeration system, heat pump HVAC systems do exactly that... the valves in the system are arranged and switched so that as the condenser on the outside unit collects frost and eventually ices up (heat pump mode), the system reverses the valves and the condenser is heated and the ice melts (defrost mode). When the system determines that the ice has melted, it switches the valves back to heat mode. In defrost mode, the system is essentially an air conditioner. Yes I'm quite familiar with those having installed several of them. Most heat pumps you'll find out there don't actually sense frost buildup but rather have a simple interval timer which triggers a defrost cycle every 30, 60, or 90 minutes. A defrost termination thermostat senses the temperature of the line out of the outdoor coil (which is the evaporator in heating mode) and returns the the unit to heating mode when this trips. I modified my own unit with a surplus vacuum operated sensor I found, it has a diaphragm which uses the pressure drop from the fan across the coil when it ices up to trip a switch which is then reset by a capillary tube and bulb in the location where the original DT thermostat was located. In my climate this dramatically reduced the number of energy wasting unnecessary defrost cycles, not sure how well it would work elsewhere. It's a big boost to comfort as well, my backup heat is a gas furnace so I can only run one or the other, a defrost cycle means an icy blast of cold air which can drop the room temperature by several degrees. A/C is very efficient when the condenser is down near freezing. Other methods have been tried in the past but all I've seen until very recently are the timers. Some very high end units today use a demand defrost system which monitors trends in the evaporator temperature to determine when a defrost is necessary, I have no experience with these so I can't say whether they work well or not. |
#13
Posted to alt.consumers.uk-discounts.and.bargains,sci.electronics.repair
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OT? - Broken Fridge
Homer J Simpson wrote:
"James Sweet" wrote in message news:t6oJh.11544$mh7.3573@trnddc04... What would be nice is a valve to short circuit the metering device and let the hot vapor from the compressor flow straight into the evaporator coils. That would defrost it in a matter of minutes. I've heard of a few very old refrigerators that worked this way but nothing modern does it. One more thing to go wrong with a sealed unit. Yeah well so is an ice pick in the evaporator. |
#14
Posted to alt.consumers.uk-discounts.and.bargains,sci.electronics.repair
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OT? - Broken Fridge
"James Sweet" wrote in message news:GToJh.11780$mh7.8835@trnddc04... One more thing to go wrong with a sealed unit. Yeah well so is an ice pick in the evaporator. So is an ice pick in the eye! |
#15
Posted to alt.consumers.uk-discounts.and.bargains,sci.electronics.repair
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OT? - Broken Fridge
James Sweet writes:
There is NO guaranty on defrosting using a Knife or Icepick !! I regularly used to tell my junior Technicians, "Don't bother trying to speed up defrosting the Lab Freezers with a knife or icepick". Just put it on a dolly and put it out on the loading dock for the dump , and save everybody a lot of time and trouble. The proper way to Defrost a freezer is Just unplug the freezer and place a large pan of hot water in the freezer and close the door, replace the pan with more hot water until all the ice melts. All you need to do is scratch the Evaporator to destroy it !! This is NOT covered under warranty. What would be nice is a valve to short circuit the metering device and let the hot vapor from the compressor flow straight into the evaporator coils. That would defrost it in a matter of minutes. I've heard of a few very old refrigerators that worked this way but nothing modern does it. Cost, cost, cost, cost. What's wrong with a couple pans of hot water, rags at bottom, close the door, wait an hour while you do something else! People who have to have instant gratification for a task that's performed once a year if that! --- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/ Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/ +Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm | Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html Important: Anything sent to the email address in the message header above is ignored unless my full name AND either lasers or electronics is included in the subject line. Or, you can contact me via the Feedback Form in the FAQs. |
#16
Posted to sci.electronics.repair
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OT? - Broken Fridge
"James Sweet" wrote in message
news:rPoJh.11757$mh7.4952@trnddc04... What would be nice is a valve to short circuit the metering device and let the hot vapor from the compressor flow straight into the evaporator coils. That would defrost it in a matter of minutes. I've heard of a few very old refrigerators that worked this way but nothing modern does it. Admittedly not a refrigerator, but still a refrigeration system, heat pump HVAC systems do exactly that... the valves in the system are arranged and switched so that as the condenser on the outside unit collects frost and eventually ices up (heat pump mode), the system reverses the valves and the condenser is heated and the ice melts (defrost mode). When the system determines that the ice has melted, it switches the valves back to heat mode. In defrost mode, the system is essentially an air conditioner. Yes I'm quite familiar with those having installed several of them. Most heat pumps you'll find out there don't actually sense frost buildup but rather have a simple interval timer which triggers a defrost cycle every 30, 60, or 90 minutes. A defrost termination thermostat senses the temperature of the line out of the outdoor coil (which is the evaporator in heating mode) and returns the the unit to heating mode when this trips. I modified my own unit with a surplus vacuum operated sensor I found, it has a diaphragm which uses the pressure drop from the fan across the coil when it ices up to trip a switch which is then reset by a capillary tube and bulb in the location where the original DT thermostat was located. In my climate this dramatically reduced the number of energy wasting unnecessary defrost cycles, not sure how well it would work elsewhere. It's a big boost to comfort as well, my backup heat is a gas furnace so I can only run one or the other, a defrost cycle means an icy blast of cold air which can drop the room temperature by several degrees. A/C is very efficient when the condenser is down near freezing. Other methods have been tried in the past but all I've seen until very recently are the timers. Some very high end units today use a demand defrost system which monitors trends in the evaporator temperature to determine when a defrost is necessary, I have no experience with these so I can't say whether they work well or not. Yeppers... Until a few years ago, I had an old GE Weathertron heat pump system. Terribly inefficient by today's standards, but it got the job done. It had a vacuum sensor in the outside unit that sensed a drop in air pressure inside the coils, whereupon it switched into defrost mode. It ran the auxillary heat strips while in defrost mode to keep from cooling the house while in defrost. A capillary sensed the coil temperature and switched back into heat pump mode when the coil temp got high enough. It worked quite well; only went into defrost when necessary. Scared me the first time I saw it defrosting... the big column of vapor steaming up from the unit was awesome. I thought the thing was on fire!! I had to replace the entire system when the compressor locked up after 25 or so years of operation. Don't know how the Lennox system I bought as the replacement determines that it needs to defrost... could be a timer. But it seems to work well, even in sub-freezing temps and high Florida humidity. Cheers!!! -- Dave M MasonDG44 at comcast dot net (Just substitute the appropriate characters in the address) Life is like a roll of toilet paper; the closer to the end, the faster it goes. |
#17
Posted to sci.electronics.repair
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OT? - Broken Fridge
"DaveM" wrote in message . .. I had to replace the entire system when the compressor locked up after 25 or so years of operation. Don't know how the Lennox system I bought as the replacement determines that it needs to defrost... could be a timer. But it seems to work well, even in sub-freezing temps and high Florida humidity. These days you are better off to look at one of the Japanese split system heat pumps. |
#18
Posted to alt.consumers.uk-discounts.and.bargains,sci.electronics.repair
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OT? - Broken Fridge
"Sam Goldwasser" wrote in message ... What's wrong with a couple pans of hot water, rags at bottom, close the door, wait an hour while you do something else! People who have to have instant gratification for a task that's performed once a year if that! I love the gratification of my food not spoiling. What are you doing for gratification while the pan is in the fridge? ;^) I'm guessing it'd take at least 12 hours of hot water to completely defrost my old fridge. I take out the panels and keep at it to get it all not just enough to get some air flow. First time was when the defrost timer was only working on every other cycle and ~ten years later to try and save it. Didn't want to put any money into a 25 year old so didn't bother doing any troubleshooting. Do they still sell fridges that aren't "frost free"?. Actually it was 3 times. Didn't realize the timer had 2 cycles the first time. IIRC the second cleaning was less than a year later. Soon enough I knew it had a problem at any rate. |
#19
Posted to alt.consumers.uk-discounts.and.bargains,sci.electronics.repair
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OT? - Broken Fridge
Cost, cost, cost, cost. What's wrong with a couple pans of hot water, rags at bottom, close the door, wait an hour while you do something else! People who have to have instant gratification for a task that's performed once a year if that! I was actually thinking more along the lines of domestic refrigerators where a defrost element is turned on on a regular basis so you have to pay for the power that uses, then you pay again to pump that heat back out of the freezer. Using the compressor to defrost would be ~3x as efficient and it would put the heat exactly where it's needed. |
#20
Posted to sci.electronics.repair
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OT? - Broken Fridge
Yeppers... Until a few years ago, I had an old GE Weathertron heat pump system. Terribly inefficient by today's standards, but it got the job done. It had a vacuum sensor in the outside unit that sensed a drop in air pressure inside the coils, whereupon it switched into defrost mode. It ran the auxillary heat strips while in defrost mode to keep from cooling the house while in defrost. A capillary sensed the coil temperature and switched back into heat pump mode when the coil temp got high enough. It worked quite well; only went into defrost when necessary. Scared me the first time I saw it defrosting... the big column of vapor steaming up from the unit was awesome. I thought the thing was on fire!! I had to replace the entire system when the compressor locked up after 25 or so years of operation. Don't know how the Lennox system I bought as the replacement determines that it needs to defrost... could be a timer. But it seems to work well, even in sub-freezing temps and high Florida humidity. Cheers!!! I'd actually really like to see one of the systems that used the vacuum switch, they were largely before my time so I had to figure out on my own how to make the thing work once a friend of mine stumbled across the switches at a surplus joint and clued me in. Some of those old systems were not as inneficient as you might be lead to believe by the guys who install this stuff who are usually all too eager to sell you a brand new system. Keep the coils clean and install a TXV to replace the old cap tube or orifice metering device inside and they can work pretty well, the tech has not really changed all that much. I'm sure countless systems have been replaced at great expense for problems as simple as a burned contactor or a broken wire to the compressor. Of course a compressor replacement is a big job on the best of days and it's hard to find anyone willing to work on the old stuff anymore. The general attitude of the HVAC industry as a whole is what pushed me to learn to do this stuff myself. Several years ago when I first started inquiring about it I found the vast majority of the guys I ran into who did it were a bunch of pompous a**holes. I'm sure they're not all like that but it takes only a few bad apples to spoil the whole barrel. I researched for a few months soaking up everything I could get my hands on, then went and got my EPA certification and put together my own system with surplus parts and have been having fun tinkering with this stuff ever since. It's not always a walk in the park but rocket science it ain't. |
#21
Posted to sci.electronics.repair
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OT? - Broken Fridge
Homer J Simpson wrote:
"DaveM" wrote in message . .. I had to replace the entire system when the compressor locked up after 25 or so years of operation. Don't know how the Lennox system I bought as the replacement determines that it needs to defrost... could be a timer. But it seems to work well, even in sub-freezing temps and high Florida humidity. These days you are better off to look at one of the Japanese split system heat pumps. What brands are Japanese? HVAC is one of the few areas where I haven't run into much foreign equipment. Either way this stuff is pretty dependable for the most part, properly installed there isn't much to go wrong. There are not that many different companies that make the internal bits, and efficiency regulations have limited the number of corners that can be cut in the manufacture. |
#22
Posted to alt.consumers.uk-discounts.and.bargains,sci.electronics.repair
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OT? - Broken Fridge
"James Sweet" wrote in message news:E%IJh.1927$y56.885@trnddc07... I was actually thinking more along the lines of domestic refrigerators where a defrost element is turned on on a regular basis so you have to pay for the power that uses, then you pay again to pump that heat back out of the freezer. Using the compressor to defrost would be ~3x as efficient and it would put the heat exactly where it's needed. A conventional system has only three moving parts - the rotor and valves in the compressor. A reversing valve adds complication and reduces reliability. |
#23
Posted to alt.consumers.uk-discounts.and.bargains,sci.electronics.repair
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OT? - Broken Fridge
Homer J Simpson wrote:
"James Sweet" wrote in message news:E%IJh.1927$y56.885@trnddc07... I was actually thinking more along the lines of domestic refrigerators where a defrost element is turned on on a regular basis so you have to pay for the power that uses, then you pay again to pump that heat back out of the freezer. Using the compressor to defrost would be ~3x as efficient and it would put the heat exactly where it's needed. A conventional system has only three moving parts - the rotor and valves in the compressor. A reversing valve adds complication and reduces reliability. Wouldn't have to be a reversing valve, just a bypass valve. It would eliminate the defrost element and improve efficiency, I don't see it substantially reducing reliability. |
#24
Posted to sci.electronics.repair
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OT? - Broken Fridge
"James Sweet" wrote in message news:z9JJh.1930$y56.1924@trnddc07... What brands are Japanese? HVAC is one of the few areas where I haven't run into much foreign equipment. Either way this stuff is pretty dependable for the most part, properly installed there isn't much to go wrong. There are not that many different companies that make the internal bits, and efficiency regulations have limited the number of corners that can be cut in the manufacture. They're very big in the northern parts of Australia. Try (split system heat pump site:.au) The inside unit looks like a skirting heater but mounts higher on the wall. The compressor is outside so much quieter. Of course they don't suit the ducted systems used in N America. |
#25
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OT? - Broken Fridge
They're very big in the northern parts of Australia. Try (split system heat pump site:.au) The inside unit looks like a skirting heater but mounts higher on the wall. The compressor is outside so much quieter. Of course they don't suit the ducted systems used in N America. Ah, we can get those here, they're called mini splits, always struck me as shockingly expensive though, even surplus they're not any cheaper than a standard full sized split system. |
#26
Posted to alt.consumers.uk-discounts.and.bargains,sci.electronics.repair
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OT? - Broken Fridge
"James Sweet" wrote in message news:E%IJh.1927$y56.885@trnddc07... Cost, cost, cost, cost. What's wrong with a couple pans of hot water, rags at bottom, close the door, wait an hour while you do something else! People who have to have instant gratification for a task that's performed once a year if that! I was actually thinking more along the lines of domestic refrigerators where a defrost element is turned on on a regular basis so you have to pay for the power that uses, then you pay again to pump that heat back out of the freezer. Using the compressor to defrost would be ~3x as efficient and it would put the heat exactly where it's needed. As most of that heat is produced by the cooling process, once the cooling process is interrupted, any heat pumped by the compressor would be greatly reduced, also the compressor probably takes more power to run than a defrost heater, so it would cost more to run using the idea you suggested. Have we found out yet if the original problem was caused by a punctured system? |
#27
Posted to alt.consumers.uk-discounts.and.bargains,sci.electronics.repair
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OT? - Broken Fridge
James Sweet writes:
Cost, cost, cost, cost. What's wrong with a couple pans of hot water, rags at bottom, close the door, wait an hour while you do something else! People who have to have instant gratification for a task that's performed once a year if that! I was actually thinking more along the lines of domestic refrigerators where a defrost element is turned on on a regular basis so you have to pay for the power that uses, then you pay again to pump that heat back out of the freezer. Using the compressor to defrost would be ~3x as efficient and it would put the heat exactly where it's needed. But what percentage of the energy goes into defrost? The defrost thermostat is supposed to cut off the heater when all the ice melts. If the 400? watt heater actually runs for 5 minutes every 6 hours, that's about 0.13 kWh/day which is negligible compared to the fridge's cooling power consumption. Also, of course, this takes place only in the evaporator compartment, which is not actually in the freezer box itself. So, it's mainly the aluminum tubes and fins that need to be cooled back down. I agree with another reply - the simpler, the better for what's inside the sealed system. --- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/ Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/ +Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm | Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html Important: Anything sent to the email address in the message header above is ignored unless my full name AND either lasers or electronics is included in the subject line. Or, you can contact me via the Feedback Form in the FAQs. |
#28
Posted to sci.electronics.repair
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OT? - Broken Fridge
"James Sweet" wrote in message news:CpMJh.16165$mh7.13122@trnddc04... Ah, we can get those here, they're called mini splits, always struck me as shockingly expensive though, even surplus they're not any cheaper than a standard full sized split system. I suspect the price is high because they are new. They would be a good add on for a hot water heat system where there's no ducting. |
#29
Posted to alt.consumers.uk-discounts.and.bargains,sci.electronics.repair
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OT? - Broken Fridge
As most of that heat is produced by the cooling process, once the cooling process is interrupted, any heat pumped by the compressor would be greatly reduced, also the compressor probably takes more power to run than a defrost heater, so it would cost more to run using the idea you suggested. Have we found out yet if the original problem was caused by a punctured system? Well it's not my fridge so I haven't found the problem, it was someone else's post. As for the power, I've only ever measured my own refrigerator. Compressor draws about 130W once the head pressure builds up. Defrost heater draws a bit over 600W, and I suspect using the compressor for defrost would defrost more quickly so I bet you'd still come out quite ahead. Heat pumps are in general about 3x the BTUs per watt of resistance heat. |
#30
Posted to alt.consumers.uk-discounts.and.bargains,sci.electronics.repair
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OT? - Broken Fridge
"Sam Goldwasser" wrote in message
... Bert writes: b ] said: Gummo ha escrito: My son's fridge/freezer has been leaking gas tonight. It doesn't look good for the fridge - I told him to turn it off and open the kitchen window. The question is, although Curry's one year guarantee expired a year ago and knowing that, by law, the appliance should last at least 5 years before something like this happens, who do I hold responsible? Currys or Hoover? Gummo cross posted to sci electronics repair. maybe someone there cn shed some light on the cause . On the basis that fridge coolant is a, in a secret life, really an electronic component? Degreaser? Or, that it's an electronic problem once the compressor burns out. Seriously, perflectly legitimate to post here. --- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/ Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/ +Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm | Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html Important: Anything sent to the email address in the message header above is ignored unless my full name AND either lasers or electronics is included in the subject line. Or, you can contact me via the Feedback Form in the FAQs. Yeah especially since there are many knowledgeable people here that know about lots of different things other than electronics. It also makes for interesting discussions and reading. ;-) - Mike |
#31
Posted to alt.consumers.uk-discounts.and.bargains,sci.electronics.repair
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OT? - Broken Fridge
"Harry Stottle" wrote in message
news:TlPJh.2570$_v3.771@newsfe1- Have we found out yet if the original problem was caused by a punctured system? My son called C&G, Currys maintenance sub-contractor, who want £100 to look at it but which he declined pending signs of the until actually stopping its cooling function. Until then I don't think he can conclusively claim the thing's broke! Gummo |
#32
Posted to alt.consumers.uk-discounts.and.bargains,sci.electronics.repair
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OT? - Broken Fridge
"Gummo" wrote in message ... "Harry Stottle" wrote in message news:TlPJh.2570$_v3.771@newsfe1- Have we found out yet if the original problem was caused by a punctured system? My son called C&G, Currys maintenance sub-contractor, who want £100 to look at it but which he declined pending signs of the until actually stopping its cooling function. Until then I don't think he can conclusively claim the thing's broke! I used to come to the house and take a look for 7/6d Man I must be old! |
#33
Posted to alt.consumers.uk-discounts.and.bargains,sci.electronics.repair
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OT? - Broken Fridge
Homer J Simpson wrote:
"Gummo" wrote in message ... "Harry Stottle" wrote in message news:TlPJh.2570$_v3.771@newsfe1- Have we found out yet if the original problem was caused by a punctured system? My son called C&G, Currys maintenance sub-contractor, who want £100 to look at it but which he declined pending signs of the until actually stopping its cooling function. Until then I don't think he can conclusively claim the thing's broke! I used to come to the house and take a look for 7/6d Man I must be old! I'll do it for pizza and/or beer on occasion, but only when it's local to me. |
#34
Posted to sci.electronics.repair
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OT? - Broken Fridge
Hi!
Do they still sell fridges that aren't "frost free"?. I have a "nearly full size" GE unit made in 2001 that has a "semi-frost free" refrigerator section and a conventional must-be-defrosted freezer area. It's a rework of an old design, or so it would appear. This one uses 134a refrigerant. I bought it secondhand and saw units sitting right next to it that were a few years older and R-12 based. Although there probably was no real difference in functionality (this thing cools very well!) I figured it would be easier to get rid of at the end of its useful life compared to the ones filled with R-12. Curiously enough, this unit was made in Slovenia. I'd never heard of refrigeration equipment being made there! William |
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