Alarm Code
Alarm Name Description
Controller Reaction
This information is to be used by professional installers
or qualified personnel only.
A4
Minimum Pressure
The controller will attempt to restart the pump according
to the ART function.
This alarm can be caused by:
•
The system pressure has dropped below the
setting for longer than the time set in the dL
parameter. The and dL parameters are set in
the BASIC MENU. Refer to BASIC MENU (MB)
parameters on page 19 for details on accessing the
BASIC MENU. The controller will attempt to restart
the pump according to the ART function. See ART
function (Automatic Reset Test) on page 23.
If the alarm occurs unexpectedly:
• Check the water supply to the pump
• Check the system NPSHa and that the pump is
properly sized for the system
•
Adjust the and dL parameters based on the
system conditions
• Check that the pump is primed.
If the alarm persists:
• Check for a damaged pump
• Check for leaks in the suction piping
A5
Pressure Sensor Fault
The controller will not restart.
This alarm can be caused by:
• An issue with the internal pressure sensor. This can
be an issue with the sensor itself or connections
between the sensor internal control board. The
internal pressure sensor is not repairable.
If the alarm occurs:
• Reset the alarm by following the procedure in
Alarms and warnings on page 24.
• Turn off power to the controller. Wait 2 minutes for
the electrical energy to discharge. Turn on power to
the controller.
If the alarm persists:
• Contact customer service.
A6
Over Temperature
The controller will reset when the temperature of the
power module reaches the valid range.
This alarm is caused by:
• Overheating of the power module
• Ambient temperature exceeds 122°F (50°C)
• Water temperature exceeds 104°F (40°C)
• Faulty power module
If the alarm occurs:
• Verify the ambient temperature does not exceed
122°F (50°C)
• Verify the water temperature does not exceed 104°F
(40°C)
• Verify the installation is not exposed to direct
sunlight
• Scroll through the Operating Parameters and verify
the temperature of the power module. The
controller issues the alarm at or above 80°C. The
controller will attempt to restart the pump below
60°C.
If the alarm persists:
• Contact customer service.
6 Alarms
ResiBoost INSTRUCTION MANUAL 27
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