Troubleshooting
This Troubleshooting Chart is not prepared to replace the training required for a professional refrigeration service person, not is it comprehensive
Troubleshooting Chart
Complaint |
| Possible Causes |
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| Response |
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1.Unit not | a. | Power cord unplugged |
| a. | Check for power cord plug | |||
running | b. | No power to unit | ambient | b. | Check power at receptacle & fuses | |||
| c. | Setting higher than | c. | Lower temperature setting | ||||
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| temperature |
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| Decrease the value as to 4 °F | |||
| d. | Differential too high |
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| e. | Incorrect or loose wirings | e. | Check all wirings and connections | ||||
| f. | Low voltage |
| f. | Contact an authorized electrician | |||
| g. | Defrost light blinking |
| g. | Unit is under defrost mode | |||
| h. | Compressor light blinking | h. | Unit waits for | ||||
2.Fan running | a. | a. See 4) to set FON = 0 |
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continually |
| mode for humidity modulation |
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3.Temperature | a. | Air sensor |
| a. When using an air sensor, the wine | ||||
fluctuating |
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| bottle | temperature | is mainly | |
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| controlled by the average air | |||
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| temperature. If the | |||
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| with the differential 4F, the cooling | |||
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| unit turns on at 59°F of air | |||
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| temperature and turns off at 55°F of | |||
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| air temperature. The average air | |||
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| temperature is 57°F, and then the | |||
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| wine temperature is around 57+/- | |||
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| 0.5°F. The air is light enough to | |||
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| change so quickly that it maintains | |||
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| relatively | constant | average | |
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| temperature that would prevent wine | |||
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| bottle temperature from varying. | |||
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4.Temperature | a. | Displaying 55°F, air sensor | a. | Move the air sensor away from the | ||||
high, unit |
| contacting the evaporator or in |
| evaporator and supply air | ||||
stopping and |
| the supply air |
| b. | Lower setting |
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starting but | b. | Setting too high |
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short |
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running time |
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5. Temperature | a. | Incorrect voltage |
| a. | Check for voltage |
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high, | b. | Failed thermistor |
| b. | Check thermistor by placing it in ice | |||
compressor |
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| water and measuring resistance | |||
c. | Failed components |
| c. | Check | compressor windings, start | |||
stopping and |
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| relay and overload protector. | ||||
starting but | d. | Improper condenser airflow | d. | Check for condenser fan | ||||
short | e. | Dirty condenser |
| e. | Clean condenser |
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running time | f. | Overcharge of refrigerant | f. | Call service for removing refrigerant | ||||
| g. | Discharge or suction | pressure | g. | Call service for OEM information | |||
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| too high |
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6. “HA” alarm | a. | Improper room insulation & seal | a. | Check | for | insulation, | gasket and | |
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