Question about True TSSU-27-12M-B Commercial Refrigerator

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Why would evap fan running slow

The evap fan will speed up and then slow back down, compressor getting hot due to improper airflow. Sometimes you have to turn the fan by hand to get it to start and even then it runs at half speed. I'm thinking it might be the fan motor. Is there a relay or some type of sensor that would cause this?

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If u turn the fan by hand and it turn then u need a new fan, and i think u are mixing up the fans, the fan inside the refrigerator would be the evaporator fan if that was broken then your compressor would be cold, the fan inside the compressor section would be the condenser fan, if that was defective then your compressor would be hot causing the compressor to short cycle. change the fan and clean your condenser coil and your problem should be gone,

Posted on Jan 19, 2013


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Posted on Jan 02, 2017

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SOURCE: Evap fans not running after power loss and restart

It sounds like you could be stuck on a defrost cycle? The system is in a pump down cycle, check solenoid valve is off but compressor is not cutting on pressure switch.

Posted on Mar 05, 2009

  • 1218 Answers

SOURCE: compressor won't kick on

Good day,
First step is to check to see if there is power getting to the compressor. If not you'll need to back up and find where the power was lost. Some models have a low pressure cut out pressure switch. One possibility.
Second, if power is at the compressor then you'll need to check the protective overload, start relay, and start/run capacitor if it uses one.
If everything checks out, using an ohm meter check the motor windings. They may be open ( no continuity) bad compressor.

Posted on Mar 04, 2010

  • 88 Answers

SOURCE: Tru GDM-47 cooler evaporator icing up.

possible bad defrost timer,or control on an off is bad,were you adjust temperature...thermostat from 30 to 65.00 dollars....possible there is leak or unit is under or overcharged..more than likely under charged...possible defrost heater is not working...good luck..michael doctor airr if need additional help ..its free..

Posted on Mar 27, 2010

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SOURCE: My kegerator recently stopped cooling. When I plug

The overload relay is the likely problem. See if it is burnt looking or if it rattles when you shake it. Or just replace it. It's not expensive. If that's not the problem then it's the compressor.

Posted on Sep 22, 2010

  • 1833 Answers

SOURCE: I have a True GDM-12

If the condenser fan motor doesn't turn, and if you don'thave power going to it, then it's problem from main board. Fan motor doesn'thave any power because the resistors of main board may burn out. In that case fan will not spin. You need to replace theboard. Good Luck.

Posted on Jul 21, 2011

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25 psi is about at 30 degree evap and 200 psi is about an ambient of 100 degrees. These are higher than normal but it is probably due to a "hot box pull down", meaning the conditioned space is hotter than normal due to the compressor not running. Now, the issue seems to be, according to your description, the condenser fan motor. It should not loose any of it's RPM's. If it slows down, the head pressure goes up which increases the "Load" on the compressor and causing it to go out. I would start there.

Apr 18, 2012 | Hoshizaki (RH1AAC)

1 Answer

Fan moves slowly ,compressor still hot even with a portable fan blowing on condensor ,but temps are back to normal. What would cause the fan to blow slowly and there is no obsructions

Your condenser fan (fan motor by compressor) is a variable speed and controlled by a computer board and compressor speed. If the fan motor slows down and the compressor is running in high, the unit can over heat and cause temperature issues in refrigerator sections. GE has a program which can see actual fan RPMs of motor. As I research this incomplete model number (7 possible different models) I see they all use the same fan motor Part# WR60X10209, this is a DC motor. Make sure you fan has not melted also. The heat from the compressor can melt the should or blade when this motor fails. I hope this information helps you..

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    Motor is hot?

    Which motor is hot...compressor or fan?
    Also need to know the model number.
    Is this a 3-phase or single-phase unit?

    Let's assume it is the compressor...Is it so hot that you can't touch it for more than a second or two? Is the compressor shutting down on internal thermal overload?

    Compressor body hot can be caused by a number of things:
    1. Low charge (the freon acts as a coolant for the compressor).
    2. Electrical imbalance (3-phase only). (check line-to-line voltages)
    3. Bearings in compressor failing (check amp draw).
    4. Condenser dirty or airflow blocked in some way.
    5. Condenser fan(s) not running or running backwards.
    6. If water cooled condenser then water flow problem.

    Hope this helps you get started.

    If this helps you, please select YES to the first two ratings questions. Thank you, and Good Luck.

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    My Acer Aspire 5920 gets very hot within 20-30 mins of booting it up with the fan running on high speed to cool it down, everything then slows down and it almost stalls. The sound is very draggy and sounds...

    The heatsink vents and fan could be clogged with dust. Remove the dust etc from the vents/fan, may have to remove vent panels to get to the hearsink fan assembly.
    If the laptop has vents on the bottom, use the laptop on a flat surface to get good airflow, or purchase a fan assisted base that gives boosted airflow to the bottom of the laptop.

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    Changed a/c evaperator and compressor, runs about 48 degrees temp goes up when you slow down cant find screen in high side line.

    Is your cooling fan working properly? Usually when going down the road, it will cool better due to more airflow over the condensor. If your cooling fans are not working properly, this will add to the effect. Is it going to like 60-65 degrees at idle, or like 55 degrees? 60-65 is cooling fans, 55 most likely normal. Would have to see what your gauges are reading to let you know for sure. The orifice tube you are looking for is in the high side A/C line near the evap core. Look for a place where the line can be undone, with dimpling to hold the tube in place.

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    My kenmore refrigerator kept running.

    from your description it sounds like your hearing the start relay trying to start your compressor. most likely this relay is bad and needs replacing.

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