267
yes
[36] protection of oil temperature too low
no
no
no
yes
yes
no
check indoor electronic
expansion valve
re-connect the terminals
yes
in heating mode, check
if terminal of LEVb is
fixed well, if it leaks
in heating mode, check
terminals of LEVb, LEV A1,
LEV A2 are connected
respectively
check if refrigerant is too
much
if Toil is fixed well and
if its characteristic is correct
check LEVb
recharge refrigerant
in cooling mode, check
if electronic expansion valve
of indoor unit which is not
running does not
close fully
fix again or replace the sensor
yes
yes
[37-0, 37-1, 37-2] lack of phase of 3N power supply or wrong phase sequence
no
no
yes
yes
37-0 failure
check if S-phase is electrified
37-1 failure
37-2 failure
check if T-phase is electrified
interconvert S-phase and T-phase
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