Malfunctioning Discharge Pipe Thermistor System - Daikin Sky Air R-407C Service Manual

Error Codes: Outdoor Units
3.9 Malfunctioning Discharge Pipe Thermistor System (J3)
1
Error code
LED indications
Error generation
3 3
Causes
4
Troubleshooting
5
3–50
J3
The table below shows the LED indications.
Operation
Normal
Malfunction
The error is generated when the thermistor resistance is out of its range.
The possible causes are:
Malfunctioning discharge pipe thermistor
Malfunctioning discharge pipe thermistor connector connection
Malfunctioning outdoor unit PCB.
To troubleshoot, proceed as follows:
Check the connector connection of the
discharge pipe temperature sensor (R3T)
on X6A on the outdoor unit PCB.
HAP (green)
6
6
Is
it connected
No
properly?
Yes
Check the
thermistor
resistance.
Is it normal? No
Yes
Replace the
outdoor unit PCB
H1P (red) H2P (red)
8 8
7 7
Correct the
connection.
Replace the
termistor.
Part 3 – Troubleshooting
ESIE02–01