Question about True 49 cu. ft. / 1388 liter Commercial Freezer GDM-49F-RC

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Freezer Not Fan not running!

I have a True Westerman Freezer and it runs the Compressor works everything seems to be good except the Fan is not running so it's not gettin cold i was wondering are they supposed to come on right away? because i had it unplugged for like 6 months and now im turning it back on!...and how long is supposed to run for to get to room Temp?...and estimate How Much will it Cost to Replace the Fans or Motor!

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Most all commercial freezers have some sort of fan delay/ defrost termination device. Commonly called a "Klixon" (pronounced clicks-on). It is a device that is attached to the evap. It's function is to terminate the defrost cycle when the evap reaches a certain temp, say about 50 degrees or so, to ensure there is no build up of frost/ ice on the evap. It then allows the compressor to run, and cool the evap down to a reasonable temp., say about 20 degrees, and then let the evap fan come on. It prevents overloading the compressor during a high temp condition, and it also prevents circulating warm air left from the defrost cycle. I believe this device is most likely your problem. With no air circulating, the box will no cool down.. I have seen them burn and/or slhort internally. They can come apart. too. I would look here for that problem. the True manufacturing website does not give alot of info on this piece of equipment, such as a wiring diagram but manuals are available.
Check this out and let me know how it comes out.

Posted on May 21, 2009

  • danielcastro Mar 25, 2011

    man are you a tech..? this is great info.. thank you ... i found the defrost control sutck on defrost. then i ordered one and it was sutck on defrost as well. so im going to put them in the freezer righ now and check if they will click...i didnt have a chance to check the pressures, but i bet you is low..

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Iv'e seen this problem before. When a unit is left off for extended periods the freon pressure on the low side is much higher than when it is running. Any small leaks on the low side of the system will leak faster when unit is left off. Lots of times the evap coil on the low side of the system does develop pin hole leaks over time. As an educated guesstimate I'd say you are low on gas. If the coil in the box never gets cold the fans will never come on.

Posted on Oct 29, 2009

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