ESIE02–01 Error Codes: Outdoor Units
Part 3 – Troubleshooting 3–45
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3.6 Malfunctioning in Discharge Pipe Temperature (F3)
Error code F3
LED indications The table below shows the LED indications.
Error generation The error is generated when:
■ Discharge pipe temperature becomes abnormally high
■ Discharge pipe temperature rises suddenly
■ Discharge pipe thermistor is not in its holder.
Causes The possible causes are:
■ Improper refrigerant amount
■ Clogging refrigerant piping circuit
■ Discharge temperature that is too low due to too much refrigerant or due to the discharge
thermistor being out of its holder
■ Discharge temperature that is too high.The possible causes are:
Operation HAP (green) H1P (red) H2P (red)
Normal 688
Malfunction 688
Excessively
high discharge
temperature
Refrigeration
shortage
Ÿ electrical fault coil
Ÿ mechanical fault body
Ÿ discharge thermistor
inaccuracy
insufficient suction
gas to
compressor
incorrect
operation of
expansion valve
caused by
caused by
caused by
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