hayward 400 locked in standby mode


Old 05-16-09, 11:26 AM
Thread Starter
Join Date: May 2009
Location: ontario canada
Posts: 2
Exclamation hayward 400 locked in standby mode-- need help!

hi all, just powered up my heater first time this season... and its locked in standby mode and bypass operation, it is controlled via aqua logic control panel. when i try to switch it into pool mode on the heater itself it does nothing, the panel shows "Bo" but i can't change, i've gone through most simple steps that come in the manual but still nothing... this is my 5th year with the heater and i have never had this happen. please tell me if im doing something wrong, and help me with it-- complete newbie..
any help would be greatly appreciated
Beer 4U2

Last edited by gomer; 05-16-09 at 11:41 AM. Reason: urgency
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Old 05-19-09, 09:20 PM
Join Date: May 2009
Location: North Texas
Posts: 4
It's unlikely that you did anything wrong. Most likely, the display board has failed and should be replaced. You stated that it won't come out of standby mode using the "mode" button. I can't offer much more without the model number from the heater. You may be able to purchase the part and replace it yourself, if you're handy with electronic components. If not, contact a local servicer who is familiar with the specific heater you have and arrange a service call.
Old 05-23-09, 10:02 AM
Thread Starter
Join Date: May 2009
Location: ontario canada
Posts: 2
thanks.. im confident with electronics so i think i will go at it myself before putting money out to fix it..

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