Troubleshooting Guide
PHT 1000 and 2002
(T & LT models)
Display flashes “FLO”
– This indicates a flow problem where the pressure switch is not closing
– Check that filters are clean
– Check that water level is optimal (2/3 up the filter) opening
– Check for a flow obstruction or closed valve
– Check that topside program is set up correctly for pump speeds
(see Factory-Programming instruction)
Display flashes “FLC”
– This indicates that the pressure switch is stuck in the closed position.
– Turn the power off and check the pressure switch for continuity using an Ohms meter for resistance or other
buzzer style continuity tester.
Erratic operation or 0 at topside panel
– Check for proper connection at J8
– Shut off system and restart
– Check for debris inside topside panel control housing
– Check cable connection at the topside control remove, clean reconnect
– Try new topside control
– Replace main board
No Heat
– Check the topside control for “HL”. This indicates that the system has overheated. Make sure the
temperature has fallen to less than 112°F and press the
Heat
key to reset.
– Check for flashing LED at topside control to indicate heat demand
– Check that filters are clean
– Check to see if the pilot light at the equipment panel is on. This indicates if power is actually getting to the
heater element. If this light is on and there is still no heat, the element should be checked for continuity. If
the element is open, it needs to be replaced.
– If the pilot light still does not turn on, then the pressure switch may need to be adjusted. The pressure switch
is located on the heater body. This pressure switch is a protection switch that is meant to turn the heater off
if the pump fails to operate or if there is not enough pump pressure. A test to see if the pressure switch has
been adjusted correctly is to unplug the circulation pump and see if the heater shuts off. It should operate
again when the pump is plugged back in. The heater should not be allowed to operate under static
(gravitational) pressure when the pump is not on as it will cause an instant overheat.
– If a flow switch is used it must be checked for continuity when closed.
– Replace the circuit board if the above remedies do not work.
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PA C I F I C H O T T U B S O W N E R ’ S M A N U A L
Summary of Contents for Pacific 2004
Page 54: ...55 PACIFIC HOT TUBS OWNER S MANUAL PHT 1000 PHT 2002 ...
Page 55: ...56 PACIFIC HOT TUBS OWNER S MANUAL PHT 1000 PHT 2002 ...
Page 56: ...57 PACIFIC HOT TUBS OWNER S MANUAL LXT Models equipped with Aqua Stealth ...
Page 57: ...58 PACIFIC HOT TUBS OWNER S MANUAL LXT Models ...
Page 58: ...59 PACIFIC HOT TUBS OWNER S MANUAL ULXT Model ...
