Troubleshooting Guide
PHT 2004 LX Controls
(LXT models)
“FLO” Error Condition
– 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)
“FLC” Error Condition
– 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 at topside panel
– Check for proper connection (verify jumper #3)
– Shut off system and restart
– 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” error condion. This indicates that the system has overheated. Make sure
the temperature has fallen to less than 109°F and press the
Heat
(Up/down key) to reset.
– Check for flashing LED at topside control to indicate heat demand
– Check that filters are clean
– Check to see if the board LED at the equipment panel is on. This indicates a flow problem. If this light is off
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 board LED still does not turn off, then the pressure switch may need to be adjusted. The pressure switch
is located on the heater body and has a small plastic screw (head for flat screw driver) on it. This plastic screw
(head for flat screw driver) should be turned counter clockwise to allow the heater to run on less water
flow/pressure. 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
Содержание Pacific 2004
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