Getting OHH message

[Pablorock]

My second post here, and hopefully I can get some help (as I did last time, thanks).  I am currently getting an OHH message on my Thermospa (a Park Avenue about 10 yrs old).  I replaced my heater element last year and it work fine until the end of the winter.  Now it is saying OHH.  I just replaced both temp sensors, and it seems to be a little worse.  Previously it would start up and read a temp that was incorrect (it said 100 at start up).  It would try to heat for awhile, and eventually give an OHH (with cold water).  Now that I replaced temp sensors, it turns on and immediately gives an OHH. No pumps come on, just a couple of clicks, displays a few numbers (I am assuming voltage and stuff), then goes to OHH. 

Any thoughts would be appreciated.  Thanks.  Paul.

[Sam]

Does your spa have a dedicated circulation pump?

[Pablorock]

Not sure.  It has 3 pumps.  Pump 1 is 2 speeds and usually kicks on when you start the spa (and did before I changed the temp sensors).  Now it just goes right to OHH.

[Jacuzzi Jim]

 Ohh is usually related to the high limit.  You said you replaced both temp sensors when there should only be one.

 One temp, one high limit and 1 flow switch/pressure switch.

[Pablorock]

Thanks for the replies so far.  Yes, I believe one is a High Limit, the other temp located on either side of the heater element (the bag says Temp/Hi-Limit, Generic M7, Dual Purpose).  I believe the old part(s) was 30042 and replaced them with 32016.  On Spaguts.com it says they are the same (except for a longer cable).  I do not know of a flow switch.  The board is a Balboa EL2000 Mach 2. 

I was going to try and swap the old ones one by one to see if there is any change to the startup.