Split ac wiring Wiring Connection, Indoor and Outdoor refrigeration

Outdoor Unit Communication Fault. Notes on Gree Amber Nordic / Prestige GWH09YDS6DBA2A Heat Pump This process involves checking for physical damage and inspecting key components Flash Code on Outdoor Board: 4 for 38TDB, YDB 598B, 698B models and 55 for 24ANA, 25HNA 187A, 180A, 286A, 288A

I gathered as much information as I can from the thermostat display 40 events outdoor unit, 33 events indoor unit - communication fault.

Haier AS12SH1ERA [67/109] Communication error between the indoor and

Failure to Communicate with Indoor Units or Thermostats Flash Code on Outdoor Board: 4 for 38TDB, YDB 598B, 698B models and 55 for 24ANA, 25HNA 187A, 180A, 286A, 288A 40 events outdoor unit, 33 events indoor unit - communication fault.

Carrier Outdoor Unit Communication Fault (Code 179) Easy Diagnosis. To troubleshoot this problem, it is important to check the wiring connections, control boards, and communication. Inspecting the outdoor unit is the first step to identify and resolve the issue

I received this message Carrier infinity code 179 ,outdoor unit. Have had recurring problems with communication faults. Flash Code on Outdoor Board: 4 for 38TDB, YDB 598B, 698B models and 55 for 24ANA, 25HNA 187A, 180A, 286A, 288A