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| Viper Service Manual | |
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Troubleshooting Product Not Cold |
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| Problem |
| Probable Cause |
| Remedy |
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| Compressor not Run- | A. | Barrel not in ON mode. | A. | Turn barrel to ON. |
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| ning | B. | No voltage to compressor. | B. | Check power at contactor L1, L2 - |
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| T1, T2. |
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| C. | Bad start components. | C. | Check components and wiring. |
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| D. | Compressor’s thermal overload | D. | Check resistance of compressor |
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| protector “open”. |
| windings and check incoming line |
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| voltage. |
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| E. | Open or shorted compressor wind- | E. | Check resistance of compressor |
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| ings. |
| windings. |
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| F. | Bad control board. | F. | Troubleshoot, replace if necessary. |
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| Compressor Running | A. | Low refrigerant. | A. | Repair leak and weigh in new |
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| but not Cooling |
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| charge. |
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| B. | Restricted condenser/filter. | B. | Clean or repair. |
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| C. | Condenser fan motor/blade defec- | C. | Repair or replace. |
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| tive. |
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| D. | Hot gas valve leaking or open. | D. | Replace. |
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| E. | Defective compressor. | E. | Repair or replace. |
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| Restricted Air Flow | A. | Dirty filter. | A. | Clean filter. |
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| B. | Dirty condenser. | B. | Clean condenser. |
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| C. | Damaged fins. | C. | Repair/replace if necessary. |
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| D. | Not enough “clearance” around | D. | Ensure proper spacing around |
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| unit. |
| unit. |
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| Fan Motor | A. | Bad connection | A. | Check/connect |
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| B. | Bad motor | B. | Replace motor |
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| C. | Cracked or bent fan blade | C. | Replace fan blade |
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| Hot Gas Valve | A. | Miswired. | A. | Correct wiring. |
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| B. | Defective coil. | B. | Replace coil. |
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| C. | Defective product delivery board. | C. | Replace. |
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| No/Low Refrigerant | A. | Leak. | A. | Repair and weigh in new charge. |
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| Sensors | A. | Bad connection. | A. | Correct wiring. |
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| B. | Bad sensor. | B. | Replace sensor. |
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| C. | Sensor out of position. | C. | Reposition sensor and clip. |
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| D. | Defective product delivery board. | D. | Replace. |
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© 2010, IMI Cornelius Inc. | - 65 - | Publication Number: 621360041TBSER |
