Dc Output Overcurrent (Instantaneous) - Daikin SkyAir Super Inverter 70 D Series Service Manual

SiE25-110

6.27 DC Output Overcurrent (Instantaneous)

L5
Remote
Controller
Display
Outdoor Unit LED
A
Display
Applicable
RZP71~140D
Models
Method of Malfunction is detected by converting the current flowing to power transistor into voltage with
Malfunction CT1 (DC current sensor).
Detection
Malfunction
When overcurrent has run to power transistor.
Decision (Actuated even by instantaneous overcurrent)
Conditions
Supposed
Causes
Troubleshooting
5 1 3 2 3 3 4 4
Faulty compressor coil (disconnection, poor insulation)
Compressor startup malfunction (mechanical lock)
Faulty inverter PC board
Instantaneous fluctuation of power supply voltage
Faulty compressor (if bearing is scratched)
The stop valve is left in closed.
Troubleshooting by Remote Controller Display / LED Display
3
165