TROUBLESHOOTING SECTION
WARNING: Inspection, testing and repair of electrical equipment should only be performed by a qualified service techni- cian. Many of the tests require that the unit have power to it and live electrical components be exposed.
USE EXTREME CAUTION WHEN TESTING THE MACHINE.
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| Symptom | Possible Cause | Action |
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| Low rinse temperature/low wash | Low inlet water temperature. | Ensure incoming water is 110 F (43.33 C) at |
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| temperature. |
| incoming point of machine, may need to |
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| increase the set point of the supply water |
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| heater. |
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| Low gas pressure. | Check gas supply pressure. |
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| Ensure proper operation of combination gas |
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| cutoff valve. |
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| Ensure manual gas cutoff valve is open. |
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| Check gas supply pressure. |
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| Check for kinks in flexible gas supply line. |
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| Improper circulation through system. | Check recirculating pump operation. Check |
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| for obstructions. |
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| Ensure set point is approximately 4.25 VDC. |
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| Defective | Check Ohms reading is between 950 and |
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| may be flashing). | 1150 Ohms when probe is at room |
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| temperature. Check for frayed wiring. |
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| Ensure connection to control board. |
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| Defective control board (ECB). | Perform |
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| supplied to board is +12 VDC. Ensure green |
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| LED light is flashing. |
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| High rinse temperature. | Ensure set point is approximately 4.25 VDC. |
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| ECO failure. (Overprotection feature is | Remove wire from ECO terminal. If burner |
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| faulty and does not open at 210 F) (98.89 | unit turns off, ECO may be defective. |
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| C). | Replace ECO. |
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