The electronic control board also receives signals from temperature sensors to monitor the temperatures inside the refrigerator and freezer.
Walk in cooler compressor not running.
Walk in freezer everything runs ok only its not blowing cold air inside the box the lowside of the compressor reading is 10psi and the amps on each lead shows 2 2 amps what is it that my lowside pressure is so low please let me know what i should look for to fix this problem i have been working on the freezer for week still at first nothing was running at all slowly one by one everything.
With this information the electronic control board controls the defrost cycle.
When it senses that the compressor must run to keep the refrigerator cool it sends voltage to the compressor and fans.
If your freezer won t start one of the most common parts to fail is the compressor start relay.
Next check for a clean coil and clear drain line.
If your freezer has electronic controls instead of a dial a failed relay on the electronic control board or a bad control panel can prevent the compressor from getting power.
It is also a big energy user but is rarely even thought of until an issue happens.
This was a service call on walk in freezer that wasn t cooling.
I found that the unit had a tripped head pressure controller and a condenser fan motor that w.
If the walk in cooler is freezing up the first step is to melt ice off the evaporator and then check that the evaporation fan is running and rotating correctly.
Sometimes called the controller this device is used to energize the compressor start windings until the unit is running and it usually contains the overload protection component as well.
Walk in cooler and freezer problems like compressor failure and failure to maintain pressure can result in costly loss of products inside the cooler.
All you need is your existing cooler a coolbot and an air conditioner.
If the freezer has electrical power the inside light turns on but the compressor won t run a failed cold control thermostat could be the problem.
Also check all gauges to be sure temperatures subcooling superheat and pressures are all normal.
While servicing this display cooler for an unrelated problem i noticed the defrost timer installed in a way that will almost certainly cause early compressor failure.
The walk in freezer or walk in cooler is a major part of many convenience stores cafeterias and restaurants.
