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 Part number 20068, Rev 0 

11 

 

PROBLEM: 

POSSIBLE CAUSE / SOULTIONS: 

Moisture collects inside 

 

Door gasket is not sealing properly. Check for debris, 

cracks, and items passing through door at the gasket.                                                             

 

The refrigerator or freezer is facing a doorway or is 

underneath of air conditioning vent. Relocate the unit or 

redirect air vent. 

 

Too many door openings. Minimize time door is open. 

 

Hot, humid weather increases condensation. 

 

Make sure there is a water trap (U-shaped loop) in the 

drain tube near the compressor. This will “trap” a small 

amount of water in the loop and prevent air from 

entering the chamber through the tube.  

Moisture collects on outside 
surface 

 

Hot, humid weather increases condensation. 

 

As humidity decreases, moisture will disappear. 

The display shows “SO” and 
the compressor does not run 

 

The temperature sensor is open. Call for service.                                                                                                                                                                                                                                                                                                                                                       

The display shows “SC” and 
the compressor does not run 

 

The temperature sensor is shorted. Call for service.  

The display shows “HH” and 
the compressor does not run 

 

The ambient temperature is above 40C/104F. Stop using 

immediately. 

The display shows “LL” and the 
compressor does not run 

 

The ambient temperature is below -40C/-40F. Stop using 

immediately.  

MOISTURE DURING THE SUMMER SEASON 

The amount of moisture, condensation, or high humidity related issues increase during the summer 

and, in most cases, will self-resolve when the weather cools down.  Please note a refrigeration 

system does NOT generate moisture or water but simply condenses the moisture that is already in 

the chamber. Keeping the unit in an air conditioned, low humidity space will resolve many issues. 

Other things you should check 

1.

 

Location of the refrigerator (See Quick Troubleshooting Guide above) 

2.

 

Door sealing and frequency of door opening event (See Quick Troubleshooting Guide above) 

3.

 

Make sure there is a water trap (U-shaped loop) in the drain tube near the end. This will 

“trap” a small amount of water in the loop and prevent air from entering the chamber 

through the tube.  

 

BEFORE CALLING THE MANUFACTURER’S TECHNICAL SUPPORT DEPARTMENT, 

please have the 

unit’s model and serial number ready as well as the problem description.  The model and serial 
number is located on the serial tag which can be found on the interior left upper wall of the 
unit. 

Summary of Contents for UCR101

Page 1: ...gerator of Yamato Scientific To use this unit properly read this Instruction Manual thoroughly before using this unit Keep this instruction manual around this unit for referring at any time WARNING Ca...

Page 2: ...must be noted on the freight bill and acknowledged by the carrier s agent driver at time of delivery Make sure you get a signed copy Send a written request for an inspection to the carrier B Concealed...

Page 3: ...y receipt acknowledging the damage This has to happen at the time of delivery or it won t happen at all Keep a copy for your records and send another to the carrier s damage claims department along wi...

Page 4: ...is cabinet must conform to all National and Local Electrical Codes Consult the cabinet Serial Data plate for voltage cycle phase and amp requirements before making connection VOLTAGE SHOULD NOT VARY M...

Page 5: ...ecially if the weather is very hot This is normal The motor compressor will cycle normally as soon as the excess heat has been removed TEMPERATURE CONTROL NOTE The control is preset at the factory to...

Page 6: ...ides of the unit to allow for proper air flow and therefore more even cooling of the product When loading the top shelf avoid blocking the evaporator fan s if installed There should be at least 4 inch...

Page 7: ...ides the following functions Red LED for visual indication of an alarm condition Beeper for audible indication of an alarm condition A preprogrammed 5 minute delay from the time a set point is attaine...

Page 8: ...Pon The control keys are now unlocked and you can perform the programming functions below Adjusting the temperature control set points NOTE The temperature control set points are preset at the factor...

Page 9: ...isplay Press the UP or DOWN keys several times to cycle through the parameters until CF is displayed Press SET to display the current setting either C for Celsius or F for Fahrenheit Use the UP or DOW...

Page 10: ...d the proper refrigerator air circulation For the proper air circulation place the products evenly on each shelf Do not push against the refrigerator s rear or side walls Evaporator is blocked by fros...

Page 11: ...bove 40C 104F Stop using immediately The display shows LL and the compressor does not run The ambient temperature is below 40C 40F Stop using immediately MOISTURE DURING THE SUMMER SEASON The amount o...

Page 12: ...e the proper tools When cleaning stainless steel surfaces take care to use non abrasive tools Soft cloths and plastic scouring pads will not harm the steel s passive layer Stainless steel pads may be...

Page 13: ...er Sheen Passive Film Breakdown Corrosion on metals is everywhere We recognize it quickly on iron and steel as unsightly yellow orange rust Such metals are called active because they actively corrode...

Page 14: ...enheit For Refrigerator Press and hold DOWN SET until Hy appears on display Now release the buttons Press and hold DOWN SET again until Pr2 appears The Pr2 will appear briefly and disappear when you l...

Page 15: ...to Hy Press UP or DOWN until CF is displayed press SET Change C to F and press SET This changes Celsius to Fahrenheit Then press UP or DOWN until LS is displayed press SET Low set point limit Change t...

Page 16: ...s displayed press SET Upper set point limit Change the value to 60 for factory setting and press SET Then press UP or DOWN until ALU is displayed press SET Upper alarm setting Change the value to 50 f...

Page 17: ...Hy is displayed press SET Differential Change the value to 4 for factory setting and press SET Do not push any other buttons and let the display return back to normal operation Press and hold SET unti...

Page 18: ...Conditions This warranty shall have force and effect only if all items are used with proper circuits voltages and frequencies and the operation thereof is in accordance with instructions furnished by...

Page 19: ...to a 25 restocking fee Shipping and handling cost are non refundable All retrofitted customized and special order item sales are final and non returnable In Case of Request for Repair If the failure...

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