Air-source heat pump outdoor unit beside a house in the snow
Generic photo: PeterEastern · CC BY-SA 4.0

Known issue: ductless heat pump outdoor fan motors overheating (Carrier/Bryant 2019, Lennox 2020 recalls)

Two CPSC recalls cover overheating ductless outdoor units. October 2019: about 5,350 Carrier and Bryant multi- and single-zone units (Carrier 38MGQC18, 38MGQF48, 38MBQB48; Bryant 538TEQ018RCMA, 538TEQ048RFMA, 538REQ048RBMA; sold March 2015 to April 2019), fan motor failure, free repair. February 2020: about 1,650 Lennox units (MPA018S4M-1P, MPA048S4S-1P, MPA048S4M-1P, serials beginning 6915 or 6916; sold January 2016 to November 2019), free replacement of the outdoor unit. Both told owners to keep flammables 24 inches away until fixed.

Cross-checked ~30 min easyBrands: Carrier, Bryant, Lennox

Before you start

  • Kill power at the disconnect before touching the outdoor unit; inverter boards hold a charge, wait for the LED to go out
  • Refrigerant circuit work is EPA 608: refer
  • Keep foliage and anything flammable 24 inches away from a recalled unit

Diagnostic steps

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OnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work.

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Known issue: ductless heat pump outdoor fan motors overheating (Carrier/Bryant 2019, Lennox 2020 recalls) · OnCall Tech