Main board-driver board
communication fault
Main board-display
board communication
fault
IPM overtemperature
protection
Compressor starting
fault - phase loss or
incorrect phasing
IPM module failure
Compressor out-of-step
or stalling failure
Outdoor low temperature
safeguard for heating
Indoor unit running, outdoor unit stopped;
F7
normal operation restored after
reset/recovery.
F8
Unit shutdown; restart by reapplying power
Outdoor unit stopped and resumed normal
H1
operation post-troubleshooting
H2
Unit shutdown; restart by reapplying power
Outdoor unit stopped and resumed normal
H3
operation post-troubleshooting
Outdoor unit stopped and resumed normal
H4
operation post-troubleshooting
Unit halted, restarts after temperature
C2
normalizes.