Cool Box needs repair

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malcolminthemiddle
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Cool Box needs repair

Post by malcolminthemiddle » Tue Feb 20, 2018 4:20 pm

I have a cool box that can plug into 220/12v.

It hasn't been used for a few years and isn't working.

Any recommendations where to get the box back up and running would be appreciated.

Thanks in advance.

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Re: Cool Box needs repair

Post by PET » Tue Feb 20, 2018 4:27 pm

malcolminthemiddle wrote:
Tue Feb 20, 2018 4:20 pm
I have a cool box that can plug into 220/12v.

It hasn't been used for a few years and isn't working.

Any recommendations where to get the box back up and running would be appreciated.

Thanks in advance.
Here is telephone number for a good man who repairs Washing Machines and Fridges etc 0875319933 - I think Thai spoken only
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Re: Cool Box needs repair

Post by malcolminthemiddle » Wed Feb 21, 2018 3:35 pm

Here is telephone number for a good man who repairs Washing Machines and Fridges etc 0875319933 - I think Thai spoken only
Thanks for this contact. I did try the number but came up unavailable?

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Re: Cool Box needs repair

Post by PET » Wed Feb 21, 2018 3:48 pm

malcolminthemiddle wrote:
Wed Feb 21, 2018 3:35 pm
Here is telephone number for a good man who repairs Washing Machines and Fridges etc 0875319933 - I think Thai spoken only
Thanks for this contact. I did try the number but came up unavailable?
Sorry card must be too old - last used him about 4 years ago
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Re: Cool Box needs repair

Post by Nereus » Wed Feb 21, 2018 4:25 pm

What brand is it? Engel are now made in Thailand by Toshiba.

I do not know this place, but may be worth checking as they are service agents for Toshiba.

Huahin Electronic Shop
41/31 Chomsin Rd. A.Hua Hin Prachuap Khiri Khan 77110
Telephone : 032-531-054 , 032-513-152
Fax : 032-530-747
Type AV,HA,SHA

AV= Audio Visual
HA= Home appliances
SHA= Small Home appliances

edit: http://www.toshiba.co.th/product/Engel. ... fm_lang=en

edit: viewtopic.php?t=27944
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Re: Cool Box needs repair

Post by hin » Thu Feb 22, 2018 7:02 am

It is probably a thermal absorption unit which does not have a compressor, similar to the propane Dometic refrigerators found in travel trailers. They have 3 gases, ammonia, hydrogen, somtimes sodium chromate, or salt water. If not used for a long time the gases can settle into wrong sections of the cycle. Usually can be redistributed properly by rolling it and turning it upside down for a dew minutes. Some units will redistribute by laying on its side. Find which by trial and error. Since they use ammonia the tubes are steel, not copper, so can rust out if allowed to be wet. If you can smell ammonia you are screwed as those small units are not normally repairable.

Also they need to sit level to work properly

Here is a video that explains how they work,

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Re: Cool Box needs repair

Post by hin » Thu Feb 22, 2018 8:40 am

Should have mentioned if the unit is making no heat the problem is probably electrical but if it makes even a small amount of heat the problem is probably the refrigerant. And altho a refrigerant leak is not repairable an electric fault can possibly be corrected. Try rolling it and turning it upside down for a bit, you might be lucky

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Re: Cool Box needs repair

Post by malcolminthemiddle » Fri Feb 23, 2018 12:29 pm

It's a Portacool 45 by Tristar.

No sign of life at all when plugged in.

Here's a couple of pics
20180221_183342.jpg
20180221_183342.jpg (62.48 KiB) Viewed 452 times
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20180223_121407_001.jpg

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Re: Cool Box needs repair

Post by Nereus » Fri Feb 23, 2018 12:48 pm

Have you used it yourself previously? If so, what supply was it on? It could be as simple as an internal fuse, or a resettable thermal cut out device. Should not be too hard to track down the fault.

Everthing about it on the internet is in Dutch / Skandi, so not much help if you cannot read it.

edit: Is this the unit?

http://www.tristar.eu/en/Outdoor_living ... 645/3/3927

edit: or one of these: http://www.tristar.eu/en/Outdoor_living ... xes/2/2726
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Re: Cool Box needs repair

Post by malcolminthemiddle » Fri Feb 23, 2018 3:47 pm

The model number is KB-7345 (39 litres) very similar to model number KB-7645 (41 litres) shown in your link.

It was purchased in the Netherlands and used quite frequently but not in the past 4 years.

Thanks for all the advice.

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Re: Cool Box needs repair

Post by Nereus » Fri Feb 23, 2018 4:04 pm

Hmm, the 2 systems are usually completely separate, but may have a common thermostat. On 220 Volts it will be using the compressor, and on 12 Volts a "Peltier effect" device. As shown on those specs, the 12 Volt cycle is not very efficient, especially with a high ambient temperature. Does it have a change over switch for 12 Volts to 220 Volts, or just the separate leads that appear on your posted photo? It appears to me to be a fault common to both systems.
Or, as the Peltier device is silent, you may not be able to hear it even if it is working. Depending on how it has been stored it is also possible that rodents / ants etc., have got into it and damaged something.
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