Installation Guide
754818-100 Rev. A
25
OWNER’S MANUAL
HEATERS 
All heaters are equipped with a preset pressure switch which will not allow the heater to turn on if the pump
is not running with water flowing through the whirlpool system. The heater includes an exclusive High Limit 
Switch. This safety circuit will not false trip from hot tap water. It will turn off the heater is the thermostat fails.
If your whirlpool is equipped with adjustable jets, or other flow control systems, the pre set pressure may not
activate the heater. To assure proper heater operation, all jets may need to fully open with the pump operating 
at or near maximum flow.
MOTOR WILL NOT OPERATE– CHECK FOR:
 • 
Improper or loose connections, open switches or relays, blown circuit breakers.
 • 
Wiring, loose connections etc.
 • 
Overload. (Amperage Reading.)
O-ZONE GENERATORS 
Al
l O-Zone Generators are equipped with a preset vacuum switch which will not turn on if the pump is not 
runnin
g with water flowing through the whirlpool system. The O-Zone Generator includes an exclusive High 
L
imit Switch and will not false trip from tap water. If your whirlpool is equipped with adjustable jets, or other 
flo
w control systems, the pre set vacuum may not activate the generator. To assure proper operation, all jets 
ma
y need to fully open with the pump operating at or near maximum flow.
O-ZONE GENERATOR WILL NOT OPERATE – CHECK FOR
:
 • 
Improper or loose connections, open switches or relays, blown circuit breakers.
TROUBLE SHOOTING GUIDELINES 
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