There are two main items to check. I do not recommend them unless you are qualified to work with electrical. The 2 main things that this could be are:
1. Pressure switch failure( (hot tubs need a sensor to tell the computer when it is safe to operate. If the pressure switch is out, then it will not heat) if this is a hot tub with a 24 hour circulation pump, then the pressure switch would actually be a flow switch.
Fix: Replace pressure switch/ flow switch
2. Heater element failure. (This type of failure typically trips a GFCI breaker)
if the heater element is out, then it will short to ground causing the hot tub to shut down repeatedly.
Notes: Are there any trouble codes coming up on the display panel? these help out greatly when troubleshooting like this via- messages
Hi,
Check your heating element..
A bad heating element causes many problems in dishwashers...
Dishwasher Problems The Heating Element not Working
Dishwasher Maintenance
heatman101
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