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Manufacturer diagnostic code

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BLUERIDGE BMKH24MC U7 troubleshooting

Four-way valve abnormal. Document the displayed code and operating conditions before scheduling service.

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What this code means

The Blueridge BMKH M3 system service manual identifies U7 as four-way valve abnormal.

Code
U7
System area
System diagnostics
Priority
Service
Applicable code set
BLUERIDGE BMKH M3 outdoor-unit malfunction codes

Safe checks

  • Confirm the thermostat is on, set correctly, and calling for heating or cooling.
  • Check the air filter and visible return-air path for obvious airflow restrictions.
  • Record the displayed code or flash sequence before scheduling service.

First step

Record the code, check the thermostat and filter, and schedule service if the condition remains.

Frequently asked questions

What does U7 mean on a BLUERIDGE BMKH24MC?

The Blueridge BMKH M3 system service manual identifies U7 as four-way valve abnormal.

What should I safely check before scheduling service?

Use only the visible, non-invasive checks listed on this page. Do not open equipment panels.

When should GreenFlow handle this code?

Call GreenFlow if the code repeats, the equipment is locked out, heating or cooling is not restored, or the condition involves gas, ignition, pressure, wiring, a motor, or a control board.

Manufacturer source document