[40] High pressure too high failure
If characteristic of high pressure
sensors are normal
If stop valve opens fully
If in cooling outdoor fan motor
runs normally
If in heating indoor fan motor runs
normally and if filter is clogged
Check if piping
system is clogged
Y
Y
Y
N
82
N
Replace pressure sensor
N
Open stop valve
N
Check fan motor
Y
Check indoor
Y
Clear the piping
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