THE UNIT WAS RECEIVED IN AS A WHOLESALE ITEM. THE UNIT WAS PLUGGED IN AND WAS WORKING PROPERLY. OUR TEST CYCLE RUNS THREE DAYS WITH TEMP CHECKS ETC. TWO DAYS AFTER IT STOPPED COOLING. THE COMPRESSOR OHMS OUT WITH NO SHORT TO GROUND AND IS PULLING .8 AMPS. THERE IS NO COOLING NOW. THE PRESSURE , ON THE LOW SIDE, IS 2 LBS.
I EVACUATED THE SEALED SYSTEM AND CLEARED THE CAPILLARY TUBE, WEIGHED IN THE NEW CHARGE WITH NO EFFECT, AS FAR AS COOLING. THE HIGH SIDE LINE IS HOT AS IF IN NORMAL OPERATION.
- Guest asked 8 years ago
Hello
I have sent you the troubleshooting technician link below. You need to run this through diagnostics and see if you have any error codes. When you evacuated the system did you replace the filter dryer ? This unit also has a 3-way diverter reversing valve on it. Did you put the diverter valve in the neutral position before recharging the unit ? It needs to be in the neutral position so refrigerant flows to both evaporators during the charging of the system. The Time Divided Multi-cycle (TDM) System (Stepper diverter Valve) is
used to switch refrigerant flow . This improves temperature control and energy efficiency. If it fails in the all evaporator mode, it should work properly, using slightly more energy. If it fails in the Freezer evaporator only mode,
there will be a Fridge no cool Force on the Fridge with the “Power Cool” option. Monitor the Fridge evaporator(s) temp by using the Defrost Sensor(s). If the temp doesn’t decrease, then suspect the Main PCB is not supplying signal to switch the diverter valve.
TEST BEFORE INTERPRETING LED BLINKING FREQUENCY
Compressor not running
1. Activate Forced Compressor Operation, wait 2 minutes (in case of high head pressure)
2. If compressor doesn’t start, check CN79 pin 4 for 2.5vdc (if not there replace Main PCB)
3. If voltage is OK, remove power, disconnect CN03 (Inverter PCB) and check resistance to the
windings. Aproxametly10 ohms. If not correct , inspect wire harness, if OK replace compressor.
4. Disconnect CN02 (SMPS PCB), check resistance to Overload , if open replace overload.
Matt Ace technician
- AV Repair Help answered 8 years ago
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THANKS MATT THAT WAS VERY HELPFUL
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