Pool and Spa
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We are moving and our new tenants want the spa and are willing to pay for the up keep. So we decided to "fully" fix the tub. there are very few hot tub repairmen around here and the ones available are outrageous expensive. This led to me learning more about hot tubs than I want to know. I have replaced everything but the shell and never had a problem for 11 years till now. The control panel was working erratically. The only button that worked was the "light+" and that actually turned the jets on and off. No temp adjustment, no light, aux panel non-funtional etc...So I went all out and replaced all of it and it is still not working.
The limit ok light is green but the control unpluged is still blinking
I came to the same conclusion that is was the control head or the motherboard, so I replaced both with the latest "upgraded" models.
The control head is WM-71905 Auxiliary Panel 4 Button 1998-2003 Hot Spring [Color:Green] and the Motherboard, IQ 2020, Hot Spring, Tiger River, Limelight, 2001-2009.5 PN 77087 with the "newer" WATKINS Control-Stat & Hi-Limit Thermistor '02-Current PN 39530 & 39525
It came with a new ribbon and that seems to check out pretty good. I do not see any nicks, bends or damage. Are you saying the control head I bought may not be compatible? If so I don't know what else to buy. The entire electronic system is new, and it should work as if it was a new tub. Is there a way to troubleshoot and know for sure? The same issue is happening even AFTER every control head, aux panel and motherboard has been replaced. That is the perplexing part. Since I bought these from Watkins dealers online, sending back a part to try and see if it was the cause could be a very long and tedious process. There has got to be a way to diagnose without parts trial and error. The chances of one of those new parts being faulty is slim, but it could happen. - Kris
I did some more research and I think there is something called a " pressure by-pass jumper" that needs to be installed before the heater will start heating. I don't know if this will affect everything or not. My board does not have this item.
Good morning,The pics came through great.Okay.....Lets try some things. I see you are missing the bracket around the heater board and the strap that goes across the board that holds the cover in place. You need to reinstall those brackets.Your system must be grounded properly. It is necessary to have the bracket around the heater board, the main ground lug will screw in where the bottom screw for that bracket goes...it's marked ground. This grounds the heater board and lug to the metal strip on the box of the IQ box. The spot you are using for the ground is for the heater ground.Now....you must have the main board grounded properly, also. You are missing the grounding screws that hold the IQ board in place. There are 3 of these holes across the bottom of the board. I can see a broken off screw in 1 of these holes. You will need the proper size screws to mount the board to the metal ground strip behind the box.Please disconnect all the equipment from the board except for the circulation pump. Leave the power, control panel, and sensors connected. Unplug the aux topside, also.After the board is mounted/grounded and you have just the circ pump connected, turn the 20 amp breaker back on. You can leave the heater connected, just be sure to leave the 30 breaker off for now.Update me on what happens. If you feel pics will help, please include as many as you want.The program jumper and wiring look correct. You ARE missing the pressure switch jumper on the board. http://www.backyardplus.com/proddetail.php?prod=72768This should not cause the flashing control unplugged but will make the power and ready lights flash on the control panel if not installed.Standing by,Todd
I did exactly what you said, in this 95 degree heat and nothing. I was told I can manufacture a jumper for that heater pressure pin. There are three pins there and I am not sure which two to connect. Anyway, this is beyond frustrating and surreal, ALL the parts are brand new and within the new conformity, yet the tub does not work. - Kris
I've been on the phone with BackyardsPlus and we fixed the problem. First, the jumper can be manufactured with a small piece of wire connecting the left and center pin of the pressure relay switch at P34. The most important item was critical for the tub to ever work. P13-P12 connecting wire was not installed. As soon as that was fixed the entire tub came to life and the new equipment is working as new equipment should - perfectly. I wish you identified that, and I know you tried and were working on several solutions, but when I looked at the pictures, you can clearly see that jumper missing. I won't rate you at all, even though I'm sure I'll get emails reminding me a thousand times. I will terminate my monthly subscription and request my 41.00 back. Thank you for your time and save this as a learning tool. - Kris