Made for Sundance Spas
Manufacturers Code: 6500-315
2.7kw Heater with built in Hi Limit Protection
This is a long heater (38cm) usually vertically connected to the side of the control system, it has 2 cables a brown live and blue neutral and built in hi limit on the rear.
The way to test this heater is to check if it is getting power via the cable connections , if it is not getting power the control system or something else will be stopping your hot tub from heating.
Commonly seen Sundance Spas, but could also be seen on other spas made in the same factory Like Jacuzzi.