Super Free Match
Service Manual
MAINTENANCE
140
3.8 Malfunction display: High/Low pressure sensor error
Pressure sensor error
The plug
on pressure sensor is correctly
connected to the socket on
mainboard, is it?
Measure the
DC voltage value between black
line and green line of the sensor: is it
OK?(0.5~4.5V)
Replace the mainboard of outdoor
unit
Check the orientation of
plug and socket
Replace the pressure
sensor
Yes
No
Yes
No
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