Check SiUS04-904Service Diagnosis 1475.1.5 Installation Condition CheckCheck No.075.1.6 Discharge Pressure CheckCheck No.08Installation condition checkNormal(R0287)AbnormalYESYESYESNONONOIs the heatexchanger very dirty?Check theallowable dimensionsof the air suction anddischarge area.Is the airflowblocked by obstacles orwinds blowing in theopposite direction?Does thedischarged air fromother outdoor unit cause anincrease of the suction airtemperature?Change the position of the airdischarge grille or theinstallation location.Change the position of the airdischarge grille or theinstallation location.Change the installationlocation or direction.Check the outside airtemperature (temperature of airtaken in by the outdoor unit).(The outside air temperatureshall be 109°F (43°C) or lower.)Clean the heat exchanger.(R7158)Not dirtyYESYESDirtyNONONOYESAre the heat exchangerand air filter dirty?Is the connectionpipe deformed?Is the stop valveopen?High Replace the compressor.Open the stop valve.Replace the pipe installed atthe site.Clean.Replace the compressor.Discharge pressure check
