Omega CL23A, CL24 Operating Instructions, Diagnostics and Error Messages, Problem Likely Cause

OPERATING INSTRUCTIONS

1. DIAGNOSTICS AND ERROR MESSAGES

Unit self-diagnostics provide fault condition readouts which are described below:

PROBLEM:	LIKELY CAUSE:
Blank display, unit does not	(1)	Improper battery installation.
power-up.	(1)	Check battery polarity.
	(2)	Dead battery.
BAT Annunciator.	(1)	Low battery voltage, install a new
		battery. If problem persists, con-
		sult factory.
Display reads OPEN.	(1)	No thermocouple, RTD or thermis-
		tor is plugged into the meter input.
Display reads E1 momentarily.	(1)	This indicates that an invalid key-
		pad entry has been made. Review
		keystroke sequence, or consult
		manual for input instructions.
Display reads E2 momentarily.	(1)	Attempt made to activate non-
		installed	ramp function. NOTE:
		RAMP	Function	enabled on
		Models CL25 and CL27 only.
Display reads HI.	(1)	Meter-mode input-temperature
		exceeds rating of selected sensor.
	(2)	Calibrator-mode		keypad-entry
		exceeds rating of sensor type.
Display reads LO.	(1)	Meter-mode input-temperature too
		low for accurate measurement.
	(2)	Calibrator-mode keypad-entry too
		low for accurate simulation.

2. INITIAL TURN ON

Turn on the instrument by depressing the ON-OFF keyswitch once (Figure 2). At power-up, the unit first performs a display test. All segments and annunciators of the liquid crystal (LCD) are momentarily turned on for visual confirmation by the user (Figure 3).

NOTE: In case of missing or poor-contrast segments, contact factory.

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