Service manual

Error Codes: Outdoor Units ESIE03–01

3–52 Part 3 – Troubleshooting

3.8 Malfunctioning in Discharge Pipe Temperature (F3)

Error code F3

Error generation The error is generated when:

P Discharge pipe temperature becomes abnormally high

P Discharge pipe temperature rises suddenly

P Discharge pipe thermistor is not in its holder.

Causes The possible causes are:

P Improper refrigerant amount

P Clogging refrigerant piping circuit

P Discharge temperature that is too low due to too much refrigerant or due to the discharge

thermistor being out of its holder

P Discharge temperature that is too high. The possible causes are:

P Electronic expansion valve coil is disconnected from valve body

Excessively

high discharge

temperature

Refrigeration

shortage

electrical fault coil

mechanical fault body

discharge thermistor

inaccuracy

insufficient suction

gas to

compressor

incorrect

operation of

expansion valve

caused by