I own a 8-year old Raypak RP2100 Digital (Model P-R335A) with a failed LCD and I was hoping to get some advice from this forum. I have never really used the LCD (which has been 'failing' for several years now), I simply turn the unit on using the on/off rocker switch and click the red "Temp Up" switch to max which is about right for my spa (~105Deg F). Recently my heater appears to fire up and runs normally but is only maintaining about 85 Deg F, despite cleaned filters etc.
My questions are:
1) Any ideas what the problem might be? Reading the Owner's Manual I suspect it could it be stuck in "Pool" rather than "Spa" mode? I have never really understood what "Pool" mode meant other than a lower max temp setting.
2) I'm not getting any "click" when I press the switches. The heater unit is in a location exposed to sunlight and the switches now look rather faded and weathered. Can you replace the Switch Decal (Part # 009184F) It looks to be glued on to the front panel?
3) Can I operate this heater blind? That is simply by counting the "clicks" of the Mode and Temp switches (assuming my switches did actually click). Can anyone tell me when you power up this unit, how many "clicks" are required to get into "Spa" mode and Max temp? Does it have internal memory to maintain the last settings after it is powered off.
4) If I do 'bite the bullet' and replace the PC Board, is this something a (reasonably) intelligent person can do? Is the wiring the same etc. It sound like they've made some other changes to the ignition etc. The PC Board I have is Part # 601553 (Date Code 1700, Rev 10)
Thanks for any info.