Daikin RZQ100B8V3B Service Manual page 232

Error Codes: Outdoor Units
3.17 Stall Prevention (Time Lag) (L9)
1
Remote Controller
Display
Method of
Malfunction
Detection
Malfunction
Decision
3 3
Conditions
Supposed Causes
4
5
3–84
L9
Malfunction is detected by converting the current flowing to power transistor into voltage with CT1 (DC
current sensor).
Inverter PC board detects the disorder of position signal.
When compressor overload (except for when startup) is detected
When position signal is disordered
Faulty compressor (lock)
Pressure differential startup
Faulty inverter
The stop valve is left in closed.
ESIE05-03
Part 3 – Troubleshooting