American Metal Ware Hot Water Boiler
IV) Trouble Shooting Auto Refill, Low Water Cutoff, and Dual Level Control System
PROBLEM | POSSIBLE CAUSE | SERVICE CHECK | REMEDY | |
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A) Overfilling of water | 1) | Fill solenoid valve leaking | Visual. Water entering | Disassemble and clean out. May |
tank when power is |
| due to dirt or scale holding | tank continuously, and | require new plunger assembly. Caution |
off. |
| valve open, or worn | usually slowly. | is advised to avoid damage to valve. |
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| plunger seat. |
| See valve instruction sheet. |
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| 2) | Fill solenoid valve | Visual. | On valves without integral strainer: |
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| installed backwards. |
| Install so that port marked “IN” is |
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| connected to outside fresh water |
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| supply. |
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| On valves with integral strainer: |
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| Install so that arrow points in |
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| direction of tank, away from fresh |
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| water supply. |
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B) Overfilling of water | 1) | High electrode coated | Jumper from “HI” terminal | Remove electrode assembly. Clean both |
tank only when power |
| with scale, or faulty. | to metal enclosure stops | electrodes. If still no remedy and |
to unit is on. |
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| fill. | connections are good, replace assembly. |
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| 2) | Missing or faulty | Jumper “C” terminal | Make good secure connection. May |
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| common connection for | (next to XL) to metal | require cleaning or replacement. |
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| electrode circuit (“C” | enclosure stops fill. |
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| terminal to metal |
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| enclosure). |
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| 3) | Fill valve connected to | Visual. | Connect “BLACK” wire lead to “FILL” |
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| “HEAT” terminal. |
| terminal. |
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| 4) | Dual Level printed | Jumper from “HI” to “C” | Replace Dual Level Control. |
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| circuit board faulty. | does not stop fill. |
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C) Auto refill fails to | 1) | No power at equipment. | Nothing operates on | Make sure main switch(es), fuse(s), |
fill water tank. |
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| machine. | circuit breaker(s) provide power to |
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| unit, that machine’s circuit |
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| breaker is OK and power switch, if |
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| provided, is on. |
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| 2) | No water at equipment. | “Crack” fitting at | Make sure all water supply line |
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| water inlet for pressure | valves are open. |
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| check. |
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