Owner`s manual
Page 22  Bullfrog Spas Owner’s Manual 
2- The amount of water flow may be inadequate. Make 
sure the spa is filled correctly. 
3- A pressure switch may have malfunctioned. The spa 
will continue to operate, but the heater will not 
activate. Contact your authorized Bullfrog Spa Dealer. 
Flow Switch Failure 
If the panel display shows a constant “FLO”, a pressure 
switch has malfunctioned. Contact your authorized 
Bullfrog Spa Dealer. 
Temperature Set Back 
When the display shows “COOL”, the spa water is more 
than 20°F cooler than the set temperature. The heater 
will automatically activate to provide freeze 
protection. This is a normal spa function; no 
corrective action is necessary. 
Freeze Protection 
If a freeze condition is detected “ICE” will be displayed 
on the panel. The pump(s) will be automatically 
activated. This is a normal spa function; no corrective 
action is necessary. Freeze protection is enabled 
regardless of the spa's status. 
High-Limit Sensor Failure (Spa is deactivated.) 
When the panel display shows “Sn1” the high-limit 
temperature sensor is non-functional. This must be r 
epaired only by an authorized Bullfrog Spa Dealer. 
Main Sensor Failure (Spa is deactivated.) 
If “Sn3”appears on the display, the main sensor is 
non-functional. This must be repaired only by an 
authorized Bullfrog Spa Dealer. 
Standby Mode (Spa is deactivated.) 
When “Stby” appears on the panel display, all spa 
functions have been disabled except for freeze 
control. Press any button on the control pad to reset 
the system. The "Standby Mode" is primarily used to 
prevent the pumps from being activated while 
changing JetPaks, cleaning the filter or cleaning the 
skimmer basket. 
Warning! Shock Hazard! No User Serviceable Parts. 
Do not attempt service of this control. Contact you 
authorized Bullfrog Spa Dealer. Follow all Owner’s 
Manual power connection instructions. Installation 
must be performed by a licensed electrician, and all 
grounding connections must be properly installed. 










