USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
Page 32 of 36
MaxFlo VS Pump
IS2303VSP2 Rev-B
11.2.
Check System Messages
Code Troubleshooting
Check System
DC voltage too high
Indicates that the DC bus voltage has risen above 400 VDC. Verify that line voltage is
within 10% (207-253 VAC) of pump rated voltage at the terminal block.
Check System
DC voltage too low
Indicates that the DC bus voltage has dropped below 230 VDC. Verify that line
voltage is within 10% (207-253 VAC) of pump rated voltage at the terminal block.
Also, verify that power supply connections are properly made at the circuit breaker
as well as at the terminal block.
Check System
Drive is overheated
Indicates that the internal components of the drive have become overheated. Motor
airflow path should be checked for obstructions and cleared if present. Check
ambient temperature and verify against motor nameplate (50°C/122°F).
Check System
Drive overload
Indicates that motor current is too high. Check impeller, diffuser, shaft seal, and
motor for any issues or binding.
Check System
Pump failed to start
Indicates that the drive was not able to start the motor. Check impeller, diffuser,
shaft seal, and motor for any issues or binding.
Check System
Motor phase lost
Indicates that one of the motor phases is open and that the motor/drive may need to
be replaced. Contact Hayward Technical Service for additional assistance.
Check System
Processor failed
Indicates that there is a problem with the processor in the motor/drive, and that the
motor/drive may need to be replaced. Contact Hayward Technical Service for
additional assistance.
Check System
Communication failed
Indicates that there are communication problems between the user interface and
motor/drive. Connections between the user interface and motor/drive should be
verified.
Check System
Memory failed
Indicates that the drive memory has been damaged or corrupted, and that the
motor/drive may need to be replaced. Contact Hayward Technical Service for
additional assistance.
Check System
Drive comm failed
Indicates that there are communication problems inside the motor/drive, and that
the motor/drive may need to be replaced. Contact Hayward Technical Service for
additional assistance.
Check System
Error code XX
Indicates that the user interface is receiving an error from the motor/drive that it
does not understand. Contact Hayward Technical Service for additional assistance.
Note:
All errors can be manually reset by pressing Stop/Resume when the error message is shown, or by cycling
power applied to the pump after the error has occurred. Under certain circumstances, the “Drive overload” error can
only be reset by cycling power applied to the pump. If the troubleshooting steps listed above do not help to resolve
the error condition, then the problem may be internal to the motor/drive. Contact Hayward Technical Service at
(908) 355-7995 for additional assistance.
