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
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