View Full Version : message "HH" heater Hot
I have a celebrity model TONGA S made by leisure spas and I keep getting this message (HH). In the manual these two letters mean heater hot in excess of 118 degrees. That is not the case because the SPA shuts down within minutes of turning it on. I have looked at the SPA PACK housing and the heater is NOT hot at all.Could it be the sensor giving A false reading and shutting down the spa.?Is there anything else I can look at ?
It very well could be the spa high limit sensor (http://www.hottubworks.com/SpaParts/HeaterHiLimits.php) causing the problem. Is the water flow the same? You can try removing the spa filter (http://www.hottubworks.com/HotTubSpaFilters/Filter_Search.php) and try running it and see if it goes into hh. If so, then I would start with the high limit.
Mary, thanks for the tip. The model I have has two sensors, is there a way to find out which one is bad or do I have to replace both ..?
If both sensors are mounted on the spa heater (http://www.hottubworks.com/SpaParts/HeaterComplete.php) then chances are they will both be the same type sensor. One is the high limit (http://www.hottubworks.com/SpaParts/HeaterHiLimits.php), the other is the temperature sensor (http://www.hottubworks.com/SpaParts/HeaterSensors.php). You only need to replace one, the high limit. You may have a wiring diagram inside the load box showing where the high limit plugs into the circuit board (http://www.hottubworks.com/SpaParts/ElectricalCircuitBoards.php). You could then trace the wire back to the correct sensor on the spa heater.