Peerless No Power to Boiler

Boiler will not start at all; no lights or display on Peerless control

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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

Tripped breaker, faulty service switch, blown internal fuse, loose line voltage connection

How to Fix / Troubleshooting

Safety first: Turn off the breaker before tightening any electrical connections.

Steps:

  • Check breaker: Verify the boiler circuit breaker is ON and not tripped. Reset if necessary.
  • Inspect service switch: Confirm the boiler service switch near the unit is ON. Replace if it feels loose or does not click firmly.
  • Check power at boiler: Using a multimeter (technician task), verify 120 VAC at the boiler junction box.
  • Inspect internal fuse: Many Peerless controls have a low-voltage fuse. With power off, remove the control cover and check the fuse. Replace only with the same rating.
  • Tighten connections: Tighten all line voltage wire nuts and terminal screws.
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Repair Difficulty

Medium 3/5

Required Part

Boiler service switch
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