MAC3 HydroController HCW-MM

Questions and Answers

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Marc MurphySep 23, 2025
How to turn on MAC3 Controller if it is off?
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  Melissa NelsonSep 23, 2025
  To resolve a 'System Off' status on the MAC3 Controller, repeat the procedure for the startup, setting 'System start' = ON.
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Brent BooneAug 23, 2025
What to do if my MAC3 HydroController HCW-MM displays 'Protezione Pompa Pump Protection'?
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  Carol EdwardsAug 25, 2025
  If your MAC3 Controller shows 'Protezione Pompa Pump Protection', check the correct functioning of the flow valve and inspect the system for any leaks.
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hoopercarlAug 25, 2025
What to do if MAC3 HydroController HCW-MM displays 'Tensione bassa.. Low Voltage'?
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  Jorge TerryAug 25, 2025
  If your MAC3 Controller displays 'Tensione bassa.. Low Voltage', examine the electrical system and restore the values to the range prescribed for HC.
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David RoblesAug 27, 2025
What to do if MAC3 HydroController HCW-MM displays 'Tensione alta... High voltage...'?
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  Richard PhillipsAug 27, 2025
  If your MAC3 Controller displays 'Tensione alta... High voltage...', examine the electrical system and restore the values to the range prescribed for HC.
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Kathleen WadeAug 27, 2025
How to fix a 'Spento.......... System Off' error on MAC3 HydroController HCW-MM Controller?
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  randyolsonAug 27, 2025
  To resolve a 'Spento.......... System Off' error on your MAC3 Controller, repeat the start-up procedure, setting “Start Impianto” to ON.
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Maria RyanSep 18, 2025
What does Disconnected mean on MAC3 HydroController HCW-MM Controller?
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  Tina MontoyaSep 18, 2025
  If the MAC3 Controller displays 'Disconnected', this message appears in drives configured as SLAVE. Check the correct connection of communication cables.
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Steven DavisSep 14, 2025
What does Pressure Sensor Fault mean on MAC3 HydroController HCW-MM Controller?
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  jmillerSep 14, 2025
  If the MAC3 Controller displays 'Pressure Sensor Fault', it means a fault has been detected in the pressure sensor. Verify that the pressure sensor is connected correctly. If the problem persists, replace the pressure sensor or contact technical assistance.
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Katie BrowningSep 15, 2025
What causes Water Hammer on MAC3 Controller?
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  Roberto WileySep 16, 2025
  If the MAC3 Controller displays 'Water Hammer', it means the system detected an overrun of more than 2 times the pressure set. Verify the correct functioning of the expansion tank.
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annettewilliamsonSep 6, 2025
What to do if MAC3 HydroController HCW-MM shows Insufficient Pressure?
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  Gary FloresSep 6, 2025
  If the MAC3 Controller displays 'Insufficient Pressure', it means the measured pressure is below the minimum set value (default 0.8 bar). Check for any major leaks in the system and verify the correct dimensions of the electro-pump. After eliminating the causes, disconnect the power supply, wait for the display to switch off, and then restore the power supply.
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prussellSep 3, 2025
Why does my MAC3 HydroController HCW-MM show Pump Protection?
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  Victoria NealSep 3, 2025
  If the MAC3 Controller indicates 'Pump Protection', it means the pump has been running continuously for the time set in parameter 40. Check the correct operation of the flow valve and inspect the system for leaks.