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getting fault codes on my tub. Originally shut down with an HH code (high heat). After resetting breaker everything appeared to start up but couldn't tell if all pumps were running. Anyway, temp was at 53. I did not check to see if this was the actual temp. After ten min. or so pump(s) shut off and the temp had gone up to 62. 9 degrees in 10 mins.?? After sitting idle for a brief time the code DR was displayed. 15 min. later the DR was gone and temp was displayed. after apprx. 30 min. the code SN was alternately displayed with a temp of 72......Any ideas what might be causing this? I have no dealer to contact as he is no longer selling these tubs. The only tech is quite far away and fees are outrageous.....
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You may not be getting good water flow through the heater. If your spa has a 24 hour circulation pump you need to verify that is running and pushing water through the spa heater and out the heater return fitting in the spa.
DR-stands for a flow issue
SN-is one of the sensors, high limit or temperature
OHH-is for overheat
