Haier AU04IFPERA - High Pressure Switch Failure

48
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
If connection between pressure
switch and connecting board is
good
If the system pressure meets the
condition that pressure switch
shuts off
Make pressure switch
close, measure if terminal
is conductive by multimeter
If the system is clogged
Make pressure switch terminal
on connecting board in short
circuit, check if failure exists still
Replace pressure switch
and measure again
Re-connect
Replace pressure switch
Check the piping system
Replace connecting board
[30] High pressure switch failure