Error Codes: Outdoor Units ESIE02–01
3–34 Part 3 – Troubleshooting
3
1
3
4
5
3.2 Activation of Safety Device (E0)
Error code E0
LED indications The table below shows the LED indications.
Error generation The error is generated when a safety device has detected an abnormality.
Causes The possible causes are:
■ Malfunctioning safety device input connection
■ Broken or disconnected safety device harness
■ Stop valve is set to “close”
■ Clogging refrigerant piping circuit
■ Air short-circuit
■ Malfunctioning outdoor PCB.
Overview outdoor
safety devices
See page 3–15.
Troubleshooting To troubleshoot, proceed as follows:
Operation HAP (green) H1P (red) H2P (red)
Normal 688
Malfunction 678
Temperature of fan motor coil
is abnormally high.
Refer to: High temperature
of fan motor coil
Check the safety
device's lead wire.
Is it
correctly connected
to the outdoor unit
PCB?
Is
safety device
Q1L or Q2L
closed?
Yes
No
Compressor head temperature > 120 °C
or
Discharge superheat > 55 °C
Refer to: High temperature of compressor head
Yes
Connect the lead
wire correctly.
No
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