Non-Fault Activated Problems:
Problem / Symptom | Reason - Correction |
24 VAC circuit breaker trips as soon as power switch is turned “on”. | Check the wiring at the 24 VAC breaker for a short or loose |
| connection. |
| Disconnect the contractor coil from the circuit and repeat. If |
| breaker doesn’t blow, replace the contractor. |
| Replace the main circuit board. |
24 VAC circuit breaker trips after the unit is turned on for about 15 | Disconnect fill valve from electrical circuit. If circuit breaker doesn’t |
seconds. | trip, replace the fill valve. |
| Replace the main circuit board |
24 VAC Circuit breaker trips whenever the drain valve activates | Disconnect drain valve from electrical circuit. If circuit breaker doesn’t |
| trip, replace the drain valve. |
| Remove the drain valve and insure that it is clean and free of any |
| obstructing mineral deposits. |
| Replace the main circuit board. |
Humidifier turned on but will not operate. Power lamp is “off”. | Check power supply. |
| Check circuit breaker. |
| Check connector J1 on the circuit board and insure that it is plugged |
| into the circuit board properly and that no wires are loose. |
| Insure that there is 24 VAC between pole #9 and #11 connector J1. If |
| not, check wiring. |
| Place jumper between controls terminal strip #1 and #2. If unit |
| operates, check controls settings and wiring (control stat, limit stat, air |
| proving switch.) |
| Check door interlock. |
Unit turned “on”. Contractor pulled in, but no water is entering the | Check external shutoff valves and open if closed. |
cylinder. | Check strainer and fill valve for clogs. Turn adjusting screw (fig. 9, |
| page 10) |
| Check fill valve coil to determine if it is receiving 24 VAC. If so, replace |
| the valve. |
| Check for break in wiring. |
Excessive arcing in cylinder | Check drain valve and insure that when it activates it drains freely. |
| Clean if necessary. Replace valve if defective. |
| Check water supply. If it is softened, increase the drain threshold pot, |
| “% adj.” (R18), up to 92%. (See Figure 12) |
| Use high conductivity settings if water supply is very hard, >750 |
| micromho. |
| Unit filling slower or at the same rate as the water is boiling, causing |
| over concentration and foaming. Check restriction in fill line. Adjust |
| the metering fill valve to allow greater flow of water. ( See Figure 9) |
| Have water analyzed. If iron content is greater than .1 mg/1, a filter |
| will have to be used. |
| Consult factory with water analysis |
Unit fills to the cylinder full condition and remains cold. | Check between Test Point #3 and ground with a multimeter set on |
| VDC scale. Confirm the circuit board is seeing low current flow (<2.8 |
| VDC). Proceed to next step. |
| If on initial fill, unit reaches less than 70% of rated capacity (2.8 VDC |
| on Test Point #3), adjust the drain threshold pot, “% adj.” (R18), down |
| |
| Seltzer tablet via the fill tee |
| page 10.) Restart the unit while monitoring the amp draw. Fill unit ¼ |
| full and turn “off” for several minutes to allow tablets to dissolve. |
| Restart unit. If amperage rises rapidly, it may be necessary to dilute |
| the water. If amperage rises slowly, add another |
| Check that drain valve is sealing properly. |
| Check the water conductivity and consult the factory. |
Unit turned on a cycles for a short period of time. Then it stops in the | Check cylinder fill interface connections. |
middle of a fill cycle and won’t reset until boiling stops. | Check cylinder connections (See Figure #11) |
| Check items in next troubleshooting tip concerning foaming. |
| Check amperage between cylinder full electrode and cylinder full |
| interface terminal #1. If it is greater than 7.0 mA AC is is, take a fill |
| water sample and consult the factory. |
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