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

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We have a True TS-49F freezer that the interior fan have stopped working. Holding the door switch does not activate them. Unit is out of warranty.

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This is a freezer and the fans work off a temp sensor located inside the evaporator. This sensor tells the fans to spin once the coil gets to a certain temp around 10 degrees most will send power to the fans. So my question is... does the coil inside the freezer actually get cold enough to send power to fans. Is it a refrigeration issue not electrical. Another thing is take a straw or wood coffee stirrer and with door switch closed attempt to spin fan with stirrer. If it doesn't spin freely and has some resistance the motor is bad) Keep me posted. (You should be able to reach your hand behind coil to feel it.).

Posted on Jun 25, 2017

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Most all commercial freezers like yours have, what is called, a fan delay. It is located in the evaporator case and is usually attached on or very close to the actual cooling coil. It may also be a combination switch known as a defrost terminator/ fan delay. It's purpose is to keep from circulating warm air. If the cooling coil does not reach a preset temp, the fans do not come one. Another thing is that the fan motor may just be bad. If you have more than one fan, then chances are that it's going to be the fan delay. I would start there to see that either the fan delay switch is bad or there is a reason that the coil is not getting cold enough to activate the switch.

Posted on Jan 29, 2011

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