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| TROUBLESHOOTING GUIDE |
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| Symptom |
| Probable Cause |
| Corrective Action | |||||||
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| Water reaches 180°F (82°C) but |
| Low incoming water temperature. |
| Incoming water temperature must be adequate |
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| does not last through the entire |
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| for booster size. Increase incoming water | |||||
| dishwasher operation. |
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| temperature. | |||||
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| Incoming water temperature drops. | Primary water supply is not adequate to provide |
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| correct temperature in sufficient quantities. | |||||
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| Increase supply of primary hot water. | |||||
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| Flow pressure is too high. |
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| Higher pressure uses an excessive quantity of hot | ||||||
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| water. Adjust flow pressure to 20 psi (138 kPa). | |||||
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| Booster water heater may be | Booster water heater must be sized properly for |
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| undersized. |
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| incoming water temperature and rinse | |||||
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| requirements of the dish machine. | |||||
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| Incorrect voltage. |
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| Check voltage on heater serial plate and make | ||||||
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| sure supplied voltage matches. A 240 V booster | |||||
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| water heater operating on 208 V reduces wattage | |||||
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| to 76% of the normal output. | |||||
| The booster heater does not heat |
| Unit may have been energized | This will cause the elements to burn out quickly. |
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| at all or only delivers water at |
| without water (dry fired). |
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| Replace the element(s). | ||||||
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| Fuses may be blown or circuit | Check for proper fuse sizing. Replace fuses. | |||||||||
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| breaker tripped. |
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| Check/reset circuit breaker. | |||||
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| Contact Authorized Service Agent or Bradford |
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| White for assistance. | |||||
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| Temperature | setting | out | of | Temperature setting should be maximum | |||||
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| calibration or inoperable. |
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| of 190°F (88°C). | ||||||
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| Contactors do not pull in. |
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| Contact Authorized Service Agent or Bradford |
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| White for assistance. | |||||
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| High limit switch may be tripped or | Reset switch. If switch continues to trip or cannot |
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| defective. |
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| be reset contact an Authorized Service Agent. | |||||
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| Transformer not working properly. |
| Contact Authorized Service Agent or Bradford |
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| White for assistance. | |||||
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| Low water cutoff inoperable, |
| Contact Authorized Service Agent or Bradford | |||||||
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| contacts do not close. |
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| White for assistance. | ||||||
Form No. | 15 |
