Activation Of Safety Device - Daikin Sky Air R-407C Service Manual

Error Codes: Outdoor Units
3.2 Activation of Safety Device (E0)
1
Error code
LED indications
3 3
Error generation
Causes
4
5
Overview outdoor
safety devices
Troubleshooting
3–34
E0
The table below shows the LED indications.
Operation
Normal
Malfunction
The error is generated when a safety device has detected an abnormality.
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.
See page 3–15.
To troubleshoot, proceed as follows:
Compressor head temperature > 120 °C
Discharge superheat > 55 °C
Refer to: High temperature of compressor head
HAP (green)
6
6
Check the safety
device's lead wire.
Is it
correctly connected
No
to the outdoor unit
PCB?
Yes
Is
safety device
No
Q1L or Q2L
closed?
Yes
or
H1P (red) H2P (red)
8 8
7 8
Connect the lead
wire correctly.
Temperature of fan motor coil
is abnormally high.
Refer to: High temperature
of fan motor coil
Part 3 – Troubleshooting
ESIE02–01