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8. TROUBLESHOOTING FOR FX PRO VS II PUMPS
COMPUTER CONTROLLED TROUBLE SHOOTING FEATURES for FX PRO VS II PUMPS:
1. High or Low Temperature Protection
When the motor temperature is higher than 194°F or is lower than 23°F, the pump will stop and the
error code TP is displayed. When normal motor temperature is restored, between 41°F to 140°F, the
pump will start automatically according to user’s automatic mode programming.
2. Blocking or Jamming Protection
When the motor impeller or the motor is stuck, the error code BP is displayed. The pump will
automatically attempt to restart in 6 seconds. If restarting does not happen automatically after several
attempts users need to check the impeller and motor. Always turn off power before attempting
maintenance.
3. Voltage Overload Protection
When the controller has a fault such as overload or overcurrent, the error code OL is displayed. The
pump tries to restart in 6 seconds automatically if the pump is not damaged.
4. Phase-Loss Protection
When the main PCB detects a phase loss problem (e.g. the motor cable is not properly connected),
the error code LP is displayed. The pump will try to restart automatically in 6 seconds after the cable is
reconnected or the phase loss is resolved.
5. Communication Loss Protection
When a communication failure occurs between the display PCB and the main PCB inside the pump,
the error code CP is displayed and the pump stops.
FAULT CODES, CAUSES, & SOLUTIONS:
Code
Fault
Display
Possible Causes
Solution
TP
High temperature or low
temperature protection
Temperature higher
than 194°F or
temperature lower than
23°F.
1. Wait for the temperature to return to
normal (41°F to 140°F).
BP
The motor impeller or the
motor will not turn
1. Pump sucked in
impurities and the
impeller is jammed.
2. Bearing damage froze
the motor shaft.
1. The pump will attempt to restart
automatically in 6 seconds. If restarting
fails user needs to check the impeller
and motor when the power is off.
2. Send it to a professional repair
station.
OL
Voltage Overload
The output amperage is
too high.
1. The pump will try to restart au-
tomatically in 6 seconds if it is not
damaged.
2. Send it to a professional repair
station for repair.
LP
Phase Loss
There is a phase wire
missing connection at
the input.
1. The pump will try to restart
automatically in 6 seconds after the
phase wire is well connected.
CP
Communication Failure
1. Loose connection
cable between display
PCB and main PCB;
2. Connection cable
damaged.
1. After communication is restored,
the pump will restart automatically.
2. Check the connection cable.
3. Send it to a professional repair
station for repair.
