50
[15] Discharge temperature is too low
Discharge sensor
well connected
Reconnect of discharge
sensor is ok?
Reconnect
Change sensor
Recharge
Refrigerant overcharged?
TC1 and TC2 is good?
Change
Change
Indoor EEV is good? (By cut
off power and power on again)
All indoor fans run normally
Check fan motor,
indoor PCB and fan
motor wire connection
SV2 leaks? (Disconnect
SV2 connector and feel the
temperature after SV2 is lower
than ambient temperature, it
means SV2 leaks)
PCB Change
SV2
Check SV2 port on outdoor
PCB, if there is 220v to SV2
wiring all the time?
Change
outdoor PCB
Indoor PCB
is good?
Change indoor
PCB
Outdoor
PCB is good?
No
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes