Panasonic CS-CZ35ZKE - H98: Stored Error Code; No Alarm

106
17.5.18 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