Monarch No Power to Control Panel

Display is completely blank; softener appears dead

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Blown fuse in fused spur, Faulty power adaptor or transformer, Loose mains connection, Failed control PCB power supply section

How to Fix / Troubleshooting

Safety first: Only work on electrical connections if you are competent. Otherwise, contact an electrician.

  • Check outlet and spur: Verify that the wall socket or fused spur is live and the switch is on. Replace the fuse with the correct rating if blown.
  • Inspect power lead: Ensure the power cable is firmly plugged into the softener and not damaged.
  • Test adaptor/transformer: If accessible, measure the output voltage of the transformer with a multimeter and compare to the rating label.
  • PCB inspection: If power is present at the board but the display is dead, the PCB may have failed and require replacement.
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Repair Difficulty

Medium 3/5

Required Part

Power Adaptor / Control PCB
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