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Si20-701_B
Troubleshooting by Remote Controller
238
Troubleshooting
Refer to P.459.
Error Code
Defective Thermistor
H9
Outdoor air thermistor
J3
Discharge pipe thermistor
J5
Suction pipe thermistor
J6
Heat exchanger thermistor
J7
Intermediate heat exchanger thermistor
J8
Liquid pipe thermistor
YES
Normal?
NO
YES
Connect
correctly.
Check connectors for
connection.
Remove thermistor from
outdoor unit PCB, then
measure the resistance
using a tester.
CHECK 1
Caution
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
Normal?
NO
Replace the
outdoor unit
control PCB.
Replace the
thermistor.
CHECK 1