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HVAC Troubleshooting tutorial for air conditioning technicians working with C&H mini split heat pump units exhibiting E5 error code.
YouTube-Cooper and Hunter
Overvoltage or Too Low Voltage Protection Malfunction Conditions
Outdoor Terminal Voltage Check
Measure Input Voltage of Bridge Rectifier
Bridge Rectifier Check
Bridge Rectifier Replacement
Check Wiring of Reactor or Inductance
Reactor/Inductance Resistance Measurement