Nortec 1505691-B Diagnostic Procedures - Troubleshooting, Table #4 - Troubleshooting Guide

TROUBLESHOOTING

PLEASE READ THIS SECTION BEFORE REFERENCING SPECIFIC DIAGNOSTIC MESSAGES.

1.Ensure the installation detail conforms with the recommendations contained in the Installation section of this manual.

2.Understanding the Principle of Operation is an asset when troubleshooting. A basic description

is provided in the section titled OPERATION. For a more detailed understanding please contact your NORTEC representative.

3.When contacting your local representative or NORTEC for troubleshooting assistance, please ensure the serial number has been obtained for reference purposes.

4.Whenever the troubleshooting steps indicate a problem with the main PCB, first check all connections at the main control board.

DIAGNOSTIC PROCEDURES - TROUBLESHOOTING

The RESDELUX controller provides a number of messages to simplify troubleshooting procedures. The following table presents fault messages displayed by the controller, their meaning and possible corrective actions. Refer to the following section for detailed information about terms used in the table.

Table #4 - Troubleshooting Guide

Unit Status Lamp		Symptom	Corrective actions
Yellow	Green
On	On	Maximum water level	This usually happens on initial start-up after replacing the cylinder
		inside cylinder.	(normal).
			Water is concentrated with minerals inside the cylinder.
			Let unit run, yellow light will disappear when the unit is at full
			output. This may take a day or two.
Off	Off	No power to the	Check for main power supply fault.
		board.	Turn power switch to ‘Drain’ position. If drain valve is activated
			(sound of solenoid), check connection to the board or board itself.
			When no sound present, check fuse (replace with 1.5A if needed),
			transformer (voltage should be present between fuse holder and
			ground screw).
1 flash	Off	Over current.	Check drain valve operation, drain time, possible drain	restrictions.
sequence		Operating amperage	Check if fill valve leaks (not holding supply water).
		exceeded 130% of	Back pressure may also cause very conductive water	conditions.
		rated amps. Water is
			Was the humidifier short cycling?
		drained from the
			Check for short cycling.
		cylinder (drain valve
		on for 10 min.).
2 flashes in	Off	No current	Check water level in the cylinder - should be more than ¼ full. If not
sequence		detection for 30	check fill rate, 24 VAC voltage on fill valve terminals (unit must be
		minutes with	on with call for humidity - green light steady on). Verify fresh water
		continuous call for	supply to the humidifier. Leaking drain valve can be at fault
		humidity.	(minerals blocking the plunger).
			If cylinder is more than ¼ full, check primary power, connections to
			the cylinder, continuity of wires to cylinder.
			Are power wires connected to proper terminals on the cylinder?
			(Color coding)
			Possibly wrong cylinder type.
			Low water conductivity.
4 flashes in	Off	End of cylinder life -	Check water level in the cylinder, should be about ¾ full.
sequence		change cylinder.	Check for foaming if water level lower or cylinder life shorter than
			expected.
			Change cylinder, clean drain valve.

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