JBJ ATO help

sjm1978 · 07/08/2008, 03:06 PM

im having a problem with my JBJ ato. i have it setup in mode A using one float switch. ok this is what it does the sensor light turns on and pump light comes on dim and pump dont turn on i have to reset the float switch to get it to work again. i noticed that it will come on work fine and then a couple minutes later it trys to turn on again but the pump dont turn on. does anyone know what is causing this? the float switch is clean and the unit is about 2 weeks old.

sjm1978 · 07/08/2008, 04:26 PM

this is what i got from the jbj site

Q: Why does my A.T.O. automatically shut off after a few minutes of operation even though the water level has not reached the float sensor?
A: All A.T.O. Controllers have a factory "Float Fail-Safe" duration time period of 3 minutes and 45 seconds of operation before power to the pump is turned off. The Pump LED will glow but power to the pump will not be turned on. This feature was designed to act as a safety mechanism in the unlikely event the float sensor(s) failed or if something was to get stuck in between the sensor(s). You will have to reset the float sensor(s) to restart the controller.

ok so i tested it out right now. i used the stopwatch on my cell phone once i hit start i pushed down on the float valve turn on the pump to pump water and i released it a few seconds later so it turned the pump off. then i watched the stop watch timer and once the time was at 3:46 i hit the float valve down and it didnt turn the pump on. so this tells me that i need to adjust the "Float Fail-Safe" duration time period witch im gonna do i hope this works i think it will

Reefer08 · 07/08/2008, 11:57 PM

you can change the fail safe 3 minutes to 14 minutes. Just unscrew the four screws on the back, then unscrew the green screw at the top Counterclock wise until it locks. Thats it. you can also turn off the alarm with the on and off switch on the circuit board.

Carbone · 07/09/2008, 01:51 AM

I have the exact same problem. The fail interval is set to maximum, but sometimes the sensor and pump light is on, but the pump seems that is not powered on. I wrote an email to JBJ support, but they only told me to increase the interval. No replay since then. Very bad support I can say.
All that I can do was to put the ATO on a timer and restart it every hour.

07/08/2008, 03:06 PM	#1
sjm1978 Registered Member Join Date: Mar 2006 Location: Mesa, Az Posts: 1,184	JBJ ATO help im having a problem with my JBJ ato. i have it setup in mode A using one float switch. ok this is what it does the sensor light turns on and pump light comes on dim and pump dont turn on i have to reset the float switch to get it to work again. i noticed that it will come on work fine and then a couple minutes later it trys to turn on again but the pump dont turn on. does anyone know what is causing this? the float switch is clean and the unit is about 2 weeks old. __________________ Obsession Florida Ricordea's New Obsession SPS ------------------------------------------------------ Steven Current Tank Info: in the process of looking for a new tank

07/08/2008, 04:26 PM	#2
sjm1978 Registered Member Join Date: Mar 2006 Location: Mesa, Az Posts: 1,184	this is what i got from the jbj site Q: Why does my A.T.O. automatically shut off after a few minutes of operation even though the water level has not reached the float sensor? A: All A.T.O. Controllers have a factory "Float Fail-Safe" duration time period of 3 minutes and 45 seconds of operation before power to the pump is turned off. The Pump LED will glow but power to the pump will not be turned on. This feature was designed to act as a safety mechanism in the unlikely event the float sensor(s) failed or if something was to get stuck in between the sensor(s). You will have to reset the float sensor(s) to restart the controller. ok so i tested it out right now. i used the stopwatch on my cell phone once i hit start i pushed down on the float valve turn on the pump to pump water and i released it a few seconds later so it turned the pump off. then i watched the stop watch timer and once the time was at 3:46 i hit the float valve down and it didnt turn the pump on. so this tells me that i need to adjust the "Float Fail-Safe" duration time period witch im gonna do i hope this works i think it will __________________ Obsession Florida Ricordea's New Obsession SPS ------------------------------------------------------ Steven Current Tank Info: in the process of looking for a new tank

07/08/2008, 11:57 PM	#3
Reefer08 Moved On Join Date: Apr 2008 Location: SoCal Posts: 2,812	you can change the fail safe 3 minutes to 14 minutes. Just unscrew the four screws on the back, then unscrew the green screw at the top Counterclock wise until it locks. Thats it. you can also turn off the alarm with the on and off switch on the circuit board.

07/09/2008, 01:51 AM	#4
Carbone Premium Member Join Date: Jan 2007 Location: Romania Posts: 117	I have the exact same problem. The fail interval is set to maximum, but sometimes the sensor and pump light is on, but the pump seems that is not powered on. I wrote an email to JBJ support, but they only told me to increase the interval. No replay since then. Very bad support I can say. All that I can do was to put the ATO on a timer and restart it every hour.