Owner`s manual

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Error
The heater is turned off during an FLC error. The controller is always
checking the current state of the pressure switch. When the Pump 1
is not running, the switch must be open. If not, an FLC error occurs.
While the pump is running, an FLC error, which was present before
pump activation, is removed only if an FLO error occurs.
If an FLO error occurs or if the pump is not running, an FLC error is re-
moved when the switch opens. When the system detects that the error
message no longer exists, it will clear the error itself.
Temperature Sensor Failure
This display indicates that the heater has been turned off because the
temperature probe is out of range. This will remain active until the unit
reads a temperature between 32 degrees F and 126 degrees F.
This error should be ignored during the first hour after a power-up.
High Limit
HL in the display indicates the High Limit probe temperature has
reached 119 degrees Fahrenheit ( 44.4 degrees Celcius ) and the
heater has turned off. The error will display until the HL probe
temperature falls below 119 degrees and the power is reset.
TROUBLESHOOTING cont...