New member from Central California

carlosmvet

New member
Jul 28, 2020
1
Central California
I've been a pool owner for about 4 years now and have had no major problems until this weekend. Our JXI 400N heater displayed a fault code "fuselink/field" and now the spa isn't heating. Found this website and have read a bunch of information so thanks for that. Time to troubleshoot this weekend.
 

setsailsoon

Gold Supporter
LifeTime Supporter
TFP Guide
Oct 25, 2015
3,338
Stuart/FL
Carlos,

Welcome to TFP!

Check air flow intake to your fan and the exhaust piping. If there is and obstruction it can cause a fire so there's a sensor in the exhaust gas piping that shuts the heater down before a fire happens. The sensor is a single-use so it needs to be replaced after the obstruction is cleared. There are a few other potential causes but usually it's due to an obstruction. Can also be a bad connection at one of the wires to the sensor or a failed sensor but they don't fail too often. Is your heater outdoors or indoors? A photo of your equipment would be very helpful.

Chris