We moved into a new home with a pool/spa. It has a pentair mastertemp 400 heater I believe the pool was built in 2013 so the heater may be 7-8 years old. It has been working fine for the spa about 1-2 times a week since we moved in at the end of July, we don't heat the pool. Tonight I turned on the spa for our end of week soak, and after dinner I checked the temp and it wasn't heating, the spa was cycling just fine.
I checked the equipment and both the pool and spa LED were lit, the...
Mastertemp 400
I checked the equipment and both the pool and spa LED were lit, the...
Mastertemp 400
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