No
69
No
No
No
A
[22] High pressure protection action (Pd sensor)
Whether the
characteristic of high pressure
sensor is normal
Yes
Check the part, if improper,replace it
Whether the
shutoff valve is fully
open
Fully open shutoff valve
Yes
Yes
Whether the
outdoor fan can normally
run (cool)
Whether the
connection of the connectors,
capacitor and fan motor
are normal
Modifying
No
Yes
No
Yes
Whether there
is the factor affecting
heat exchange of outdoor unit
1.Heat exchanger is blocked
2.Airflow is in short circuit
Eliminate interference factor
Whether the
SV2 by-pass loop is
normal
Repair SV2 by-pass loop
(Coil winding is improper, wire is
broken)
Check outdoor INV PCB,
if improper, replace it
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