Crewey Posted May 13, 2016 Report Share Posted May 13, 2016 Hi guys, this is my first post, but I wonder if anybody could help me. I have a Chines hot tub. When I switched it on a few weeks ago the temperature reading said 40 degrees C, but the water was actually 16 degrees C. I renewed the temperature sensor but the problem remained. I have today replaced the PCB with a new one (as I was told it could only be one of these two things!). Now I have an "FF" error code. Anybody have any ideas? Thanks in advance. Dave Quote Link to comment Share on other sites More sharing options...
Roger Posted May 14, 2016 Report Share Posted May 14, 2016 Filters all clean? Any air in the pump? Quote Link to comment Share on other sites More sharing options...
Crewey Posted May 14, 2016 Author Report Share Posted May 14, 2016 Yes, filter is new and the pumps are working. The heater was renewed last summer too! Quote Link to comment Share on other sites More sharing options...
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