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13.5.14 H98 (Error Code Stored in Memory and no alarm is triggered / no TIMER LED
flashing)
Malfunction Decision Conditions
Indoor high pressure is detected when indoor heat exchanger is detecting very high temperature when the unit is
operating in heating operation.
Phenomena: unit is stopping and re-starting very often in heating mode.
Malfunction Caused
Indoor heat exchanger thermistor
Clogged air filter or heat exchanger
Over-bent pipe (liquid side)
Troubleshooting
NO
NO
YES
When abnormality indication starts again
Check the indoor unit intake air filter
Is the air filter dirty?
●
Clean the air filter
●
Clean the indoor unit heat exchanger
YES
Check the dust accumulation on the indoor unit heat exchanger
Is the indoor unit heat exchanger dirty?
●
Defect in indoor pipe temperature
NO
Check the indoor pipe temperature thermistor:
●
Check the piping & installation condition
YES
Is the measured resistance of the indoor pipe temperature
●
Plug out connector (CN-TH) from the indoor unit PCB
●
Measure the resistance of the indoor heat exchanger
temperature thermistor
thermistor matches the value specified in its characteristic
chart?
thermistor
●
Replace the indoor pipe temperature
thermistor
●
Replace piping / reinstall the unit
if necessary
For safety reason and to prevent
component breakdown, always switch
off the power before remove and
connect the component.
Caution