TROUBLE SHOOTING
This is a
No display at topside
-Check that the topside is correctly plugged into spa pack.
-Check the breaker
-Check that connection to main board is clean and sound
Display flashes "th1/39" on system start up
-Check that the temperature sensing probe connection to main board is clean and sound
Display flashes"th2/current temperature" on system start up
-Check that the temperature sensing probe connected to the main board is clean and sound
Note: a new
Display flashes "th2/39" on system start up
- This indicates that both thermisters are detecting spa water temperature of less than 39° F/4° C or they are both disconnected (open). The pump will run in this condition.
Display flashes "OH" (OVER HEAT)
-This indicates that the spa water temperature is over 112° F. The system should shut down in this state and will
Display flashes "hot" (OVER HEAT)
-This indicates that the heater body is over 112° F. The system should shut down in this state and will
Display flashes "HL" (HIGH LIMIT)
-This indicates that either the heater or the spa has reached 118° F or higher. The system will not
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