Table 4. Status Messages with LED State
NHTC Display Message | LED state | System Action |
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Idle | None | Unit is made idle. |
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Humidifying | GRN (after steam | The unit has closed the contactor and is sending |
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| production starts) | current to the cylinder to humidify. |
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MANUAL DRAIN: ON | YEL (blink) | The drain valve is activated. |
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SAFETY LOOP; OPEN | GRN | Steam production stopped. |
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| (blink) |
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LEVEL SENSOR; ON | None | Deactivates the fill valve to prevent overfilling. |
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KEEP WARM ACTIVATED | None | Keep Warm feature activated, it has closed the |
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| contactor to warm the water. |
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W19: Cylinder spent | YEL, GRN | The electronics allow the cylinder to be reset up |
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| to four times before locking out the humidifier. |
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E19: Cylinder spent | YEL, RED | Humidifier interrupts operation and the fault relay |
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| is activated. |
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FOAM: FULL TANK FLUSHING | None | The unit will initiate a flush of the cylinder and |
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| resume operation. |
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