jpete4985

Hey Guys and Gals, I'm really hoping someone here can help me as I'm at a total loss... I recently moved into a new rental home and there is a nice 2006 Spa Coleman Hot Tub outback. It looks brand new. The owner of the property indicated it wasn't working but he would spend up to 200 on parts if I did the work to which I agreed to see if we can get it going. So first off it hasn't ran in about a year. The water in the tub is stone cold maybe 40 some degrees. When you power on the breaker the tub goes through what appears to be a self check and flashes 100 then 21 then 114 then 240 and then goes direct to an OHH (Overheat Code). I have verified DIP Switch 3 is on and all others are off as shown on the panel diagram. My immediate thought was one of the M7 sensors on the inline Balboa heater were bad. After pricing the 2 sensors I decided to just replace the entire heater with both sensors. The new heater cam today and I installed with both new M7 sensors it just fine with no issues and sure enough it still loads to the OHH screen. I am completely locked out of the panel all it will display is OHH and there is no function. Here are a few more factors that may help someone with more knowledge than me come to a conclusion... 1.) I can't find a rest button anywhere other than the GFCI Reset on the breaker panel. I have looked on the board and all along the power in cord. Am I Missing Something? 1A.) I have hosed out the filter. 2.) When I leave the power to the tub even though the OHH remains on the tub does go into its standard cycle and powers on jets to circulate water every 15 minutes. 3.) If I switch on DIP Switch 10 I get message CFE then A10. Which I understand is a programing mode for the factory and not supposed to be used by the end user. I didn't mess with it to screw up programing but did this to verify the board is in fact communicating with the topside panel. In my logic this says the board is working at least somewhat. 4.) Could it be the sensor inside the tub? That will be a bear to change the way its on the tub so I'm hoping to stay away from that if it's not the likely culprit. At the end of the day it's not my hot tub but I have a 2 year lease here and am willing to spend a few bucks to get it going. The one local spa place here charges 200 just to come out and have a look and then 150 per hour which I can't afford for just a diagnostic! Please help! I'd love to hear if you've ever experienced this or something similar and what the fix was. Happy New Year Everyone! Justin