HOA Keypad Display
Minor Fault Name
Low Suction Pressure
Low Suction Pressure
Cause
Possible Solution
Insufficient suction pressure is present.
• Check pressure switch contact for correct operation.
• Check control wiring to drive terminal strip from pressure switch contact.
• Check to make sure that suction pressure is present by means of a separate measuring device.
HOA Keypad Display
Minor Fault Name
Low Water in Tank
Low Water in Tank
Cause
Possible Solution
The water level in the tank is too low.
• Check pressure switch contact for correct operation.
• Check control wiring to drive terminal strip from pressure switch contact.
• Check to make sure that suction pressure is present by means of a separate measuring device.
4.6 U1000 iQpump Presets and Functions
YASKAWA TOEPYAIUPW01A YASKAWA AC Drive - U1000 iQpump Matrix Drive User Manual
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Start-Up Programming & Operation