Hach 900 MAX manual Pager Alarm Codes, Alarm Code Equipment Reason

Section 6

Table 15 Pager Alarm Codes

Alarm	Code	Equipment	Reason	Alarm	Code	Equipment	Reason
Low Main Battery	1	—	Battery pack is less than 11.5 V	High CH5	28	—	—
Memory Battery	2	—	Internal memory battery is low	High CH6	29	—	—
Low Slate Memory	3	—	Less than 10% slate memory left	High CH7	30	—	—
				High
Slate Memory Full	4	—	Slate memory is used up	Reference	31	—	—
				Temp.
Modem Failure	5	—	Modem chip/modem board failure	High	32	—	—
				Velocity
Missed Sample	6	—	No liquid detected when sampling	High D.O.	33	—	—
Purge Failure	7	—	Water present at sensors after	High D.O.	34	—	—
			purge	Temp.
Jammed Distributor	8	—	Sensors indicate arm is not	High	35	—	—
			moving	Conductivity
Bottle is Full	9	—	Full bottle option indicator is on	High Cond.	36	—	—
				Temp.
U-Sonic Echo Loss	10	—	No return signal detected	Low Level	37	—	—
Xducer Ringing	11	—	The return signal is detected too	Low Flow	38	—	—
			soon
U-Sonic failure	12	—	Ultrasonic board detects an error	Low	39	—	—
				pH/ORP
				Low
RS485 Timed Out	13	—	Comm. problems with RS485	Process	40	—	—
				Temp.
Unable to Cool	14	AWRS only	Too high temperature in a	Low CH1	41	—	—
			compartment
Unable to heat	15	AWRS only	Too cold a temperature in	Low CH2	42	—	—
			compartment
Low Bubbler Pres.	16	(not	Possible leak in bubble tank	Low CH3	43	—	—
		applicable)
Clogged Bubbler	17	(not	Bubbler tube is plugged	Low CH4	44	—	—
		applicable)
High Level	18	—	—	Low CH5	45	—	—
High Flow	19	—	—	Low CH6	46	—	—
High Flow Rate of	20	—	—	Low CH7	47	—	—
Chg.
				Low
High pH/ORP	21	—	—	Reference	48	—	—
				Temp.
High Process	22	—	—	Low Velocity	49	—	—
Temperature
High Rainfall	23	—	—	Low D.O.	50	—	—
High CH1	24	—	—	Low D.O.	51	—	—
				Temp.
High CH2	25	—	—	Low	52	—	—
				Conductivity
High CH3	26	—	—	Low Cond.	53	—	—
				Temp.
High CH4	27	—	—
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Modem							8990cm.fm