TROUBLESHOOTING GUIDE
| Symptom |
| Probable Cause |
| Corrective Action | ||||
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| Water at dish machine is not at the | Gauge(s) not working properly. | Check temperature of water with a thermometer | ||||||
| proper temperature. |
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| to be certain gauges are working correctly. If not, | |||
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| replace gauge(s). | |||
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| Thermostat set too low. |
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| Adjust or recalibrate. If thermostat will not |
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| recalibrate properly, replace it. | |||
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| Booster heater has more than 5 | If located farther than 5 linear feet (1524 mm), |
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| linear feet (1524 mm) of water pipe | pipes should be wrapped in insulation, and/or a | ||||||
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| to the dishwasher, causing the water | recirculating system installed. | ||||||
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| to cool off inside the pipe. |
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| Heating elements burn out. | Tank inadvertently drained | leaving | Make sure tank is full of water at all times. | |||||
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| elements in a dry condition. |
| Contact Authorized Service Agent or Bradford | |||||
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| White for assistance. | |||
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| Lime buildup in tank causing | Clean or delime tanks periodically. A water | ||||||
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| elements to split and burn out. | softener or blended phosphate treatment system | ||||||
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| may be required. | |||
| Relief valve dribbles. | No pressure reducing valve installed | A pressure reducing valve with high pressure |
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| or incorrect valve installed causing | bypass must be installed in the incoming water | ||||||
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| pressure | line to allow water to expand back into the feed | ||||||
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| tank. |
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| line. | |||
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| Bypass in pressure reducing valve | Clean bypass or replace with new valve | ||||||
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| may be blocked. |
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| with built in bypass. | ||||
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| Check valve or | Remove check valve or | ||||||
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| installed in the feed line. |
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| for water expansion or install a back pressure | ||||
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| relief valve on the incoming water line. | |||
| Relief valve opens. | Unit is overheating. |
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| Thermostat may be set too high or is sticking. | ||||
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| Recalibrate or replace the thermostat. | |||
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| Contactor may be sticking in closed | Contact Authorized Service Agent or Bradford |
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| position not allowing unit to cycle off. | White for assistance. | ||||||
| High temperature limit trips. | Temperature limit set too low. |
| If booster water heater is not overheating, |
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| Contact Authorized Service Agent or Bradford | |||
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| White for assistance. | |||
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| Thermostat set too high. |
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| Adjust or recalibrate to proper temperature. | ||||
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| Incoming water temperature too high | Incoming water temperature should not be higher | ||||||
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| causing nuisance tripping of high | than 160°F (71°C). | ||||||
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| temperature limit switch. |
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| Chattering contactor or low water | Loose | connections | or | wire | Contact Authorized Service Agent or Bradford |
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| cutoff circuit board. | connection has insulation | under | White for assistance. | |||||
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| crimp. |
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| Low voltage. |
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| Contact Authorized Service Agent or Bradford | ||||
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| White for assistance. | |||
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| Probe may be fouled. |
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| Contact Authorized Service Agent or Bradford |
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| White for assistance. | |||
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| Contactor(s) may be bad. |
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| Contact Authorized Service Agent or Bradford |
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| White for assistance. | |||
16 | Form No. |
