Troubleshooting by Error Code SiAF332111E
294 Part 6 Service Diagnosis
Troubleshooting
CHECK 11 Refer to page 350.
CHECK 12 Refer to page 353.
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
YES YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
CHECK 12
CHECK 11
Is it cooling?
Is the low
pressure less or equal
to 0.25 MPa?
Is the
temperature
difference between the suction
pipe and the outdoor heat
exchanger greater
than 20˚C?
Is the resistance
measured from suction pipe
thermistor disconnected from
the outdoor unit main
PCB normal?
Is the voltage between
X18A pins (2) and (3) of outdoor unit
main PCB (A1P) less or equal to 1.0 VDC?
(Low pressure sensor output
voltage)
Is the low pressure
sensor normal?
Refrigerant shortage, closed
stop valve, or blocked cooling
system. Check the refrigerant
system.
Replace the outdoor unit main
PCB (A1P).
Replace the low pressure
sensor.
Replace the outdoor unit main
PCB (A1P).
Refrigerant shortage
or blocked
cooling system. Check the
refrigerant system.
Replace the suction pipe
thermistor.
Replace the low pressure sensor.
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