AZ2160-1A-15DEF AZ2160 Series 30A Miniature Power Relay

I fixed my hot tub with this but you should note in other postings K4 might not be your heater relay I replaced the wrong relay. Their are 3 relays on my board K4 was my safety relay wired in series with another relay. Their are 3 high voltage relays on my board with two of them being redundant safety's for over temp. I had to replace the one in the picture with the arrow. Use your meter when the red led temp is on your control panel you should hear the temp relay kick in. You should read 220volts across your heater you can back trace from there on the tabs on top of the relay to find which one is not working. Two relays kick in on power up and a cycle safety check, the third relay controls the heat. The one to most likely wear out will be the heater relay since it cycles all the time

The part worked just like it was supposed to. It shipped and arrived in a timely manner. We have no complaints and would order from this company again.

Worked great. Fixed my dimensions hottub circuit board. Saved me $350 for a new board!