New to the forum - well sorta, been lurking for a while but this is my first post.
So here's my situation. Upon firing it up my Hayward H400IDL2 heater for the first time in almost a year, I got the dreaded AO code. I first followed the testing procedures in the manual for the control board and blower, and they both checked out. Then I replaced the pressure and vacuum switches, but no luck. Then I opened up the top of the heater and found the tubes were disconnected from the blower and vent assemblies - DUH, should've checked those before replacing the switches!! So I reattached them and VIOLA! It fired right up! Only problem is upon firing up flames started shooting out of the vent (which happens sometimes after not running it for a while due to leaves and debris getting in through the vent), but then it only ran for about 3-5 minutes and then immediately shut down with the AO code again. So I decided to pull out the blower assembly and take a look at it - and I found that the squirrel cage was completely rusted, warped, and there were several broken fins which had gotten caught and caused the motor to jam! I'm guessing they got rusted during the long period of non-use, and then when it started spinning and getting hit with flames they broke loose.
I started shopping for a new motor, but i'm a bit confused on what to buy. According to the manual the replacement part for my model is Hayward IDXLBWR1930 which is a 240V motor. However, the motor I pulled out says "Hayward P/N 1503044601" and has a sticker on it that says "115V 60Hz 1.3A". And in the manual it says to test the control board by measuring for 120VAC across pins 1 and 2 of the blower connection on the board, which tells me that the heater is supplying 120V to the blower rather than 240V. So why would the replacement part be a 240V motor if the original one is 115V and the control board puts out 120V to the motor? Is it a dual-voltage motor? I just want to make sure before spending $250+ and having it burn out quickly due to not being run at the correct voltage.