Nortec 132-3091 manual Output Too Low Error, Electronic Error 7 Nhmc only

1.No current being drawn on the monitored primary lead to the cylinder, or the actual current is not being sensed.

2.Water does not reach the electronics due to a restricted water supply line or due to a constantly open/leaking drain valve preventing a water level increase.

3.High duct static pressure blowing back into the fill cup (via steam line, empty cylinder) diverting the fill cup water to the overflow.

Unit Takes Self-Corrective Action: Yes. It pulse-activates the drain valve to possibly clear any dirt holding the seal open. It re-tests. If symptoms persist after two attempts, it then responds as shown in Figure #2.

Corrective Action:

1.Check the water level in the cylinder.

2.If there is water in the cylinder (1/5 of a full cylinder or more) check monitored primary lead to the cylinder for current with an amp clamp.

a)If current is present with zero output indicated on the display, the problem is with the main PCB.

b)If no current is present determine the cause of the primary voltage interruption.

3.If there is little or not water in the cylinder turn the unit off and disconnect the steam line at the cylinder. Reset the unit and monitor filling.

a)If unit fills and Error 5 does not reoccur, the problem was likely caused by air flow through the fill system and can be permanently corrected by installing a U trap on the fill line between the fill cup and the drain valve body.

b)If unit does not fill, then turn the unit off and clean and check the drain valve (refer to section on Mandatory Cleaning of the Drain Valve in this manual) to ensure that there are no obstructions or leaks in the drain valve preventing it from holding water in the cylinder, and check water inlet for obstructions.

4.Turn unit back on and see if it will fill.

a)If unit still does not fill, then with the unit turned on, check for 24 VAC across the fill valve (there must be a call for humidity).

b)If 24 VAC is present, then the problem is with the fill valve.

c)If 24 VAC is not present, then check for 24 VAC across 6 and 14 on the PCB.

d)If 24 VAC is not present across 6 and 14 of the PCB, then the problem is with the main PCB.

e)If 24 VAC is present across 6 and 14 of the PCB, then check for a break in the circuit to the fill valve.

Response: See Figure #2, NHMC/NHP System Messages.

7. Output Too Low - Error 6

Symptom(s) Diagnosed: Time dependent.

Neither Maximal Level (full cylinder) is detected, nor is there enough current drawn to meet capacity demand. Current monitored on primary lead to cylinder greater than zero but decreasing.

Unit Takes Self-Corrective Action: Yes. It

pulse-activates the drain valve to possibly clear any dirt holding the seal open. It re-tests. If symptoms persist after two attempts, it then responds as shown in Figure #2.

Probable Cause(s): Refer to Error 3.

Corrective Action: Refer to Error 3.

Response: See Figure #2, NHMC/NHP System Messages.

8. Electronic - Error 7 (NHMC only)

Symptom(s) Diagnosed: The electronics of the

main PCB have diagnosed the main PCB as defective.

Probable Cause(s):

1.A spike in the primary power supply to the humidifier, either high (surge) or low (brown out), causing the electronics to experience a logic glitch.

2.A problem with the main PCB.

Corrective Action:

1.Reset humidifier and monitor display. If Error 7 reoccurs within one minute of resetting the unit, the problem is with the main PCB. If Error 7 is not repeated, the primary power to the unit is suspect.

Response: See Figure #2, NHMC System Messages.

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