Daikin Sky Air R-407C - Abnormal High Pressure (Detected by the HPS) (E3)

ESIE02–01 Error Codes: Outdoor Units
Part 3 – Troubleshooting 3–39
33
4
5
1
3.3 Abnormal High Pressure (Detected by the HPS) (E3)
Error code E3
LED indications The table below shows the LED indications.
Error generation The error is generated when the high-pressure switch is activated during compressor operation.
Causes The possible causes are:
■ Abnormal high pressure caused by too much refrigerant or by non-condensable gas (air or
nitrogen)
■ Inaccuracy of the high-pressure switch
■ Broken or disconnected high-pressure switch harness
■ Malfunctioning high-pressure switch connector connection
■ Malfunctioning outdoor unit PCB
■ Malfunctioning refrigerant piping circuit.
HPS settings The table below contains the preset HPS values.
Operation HAP (green) H1P (red) H2P (red)
Normal 688
Malfunction 678
Applicable units Abnormal Reset
R(Y)P71/100/125B > 33 bar < 25.5 bar
R(Y)P200/250 > 32.5 bar < 25 bar