Daikin BRC7E61W Service Manual Page 174

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  • TROUBLESHOOTING
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SiE25-110 Troubleshooting by Remote Controller Display / LED Display
Troubleshooting 165
6.27 DC Output Overcurrent (Instantaneous)
Remote
Controller
Display
L5
Outdoor Unit LED
Display
A 5 1 3 2 3 3 4 4 3
Applicable
Models
RZP71~140D
Method of
Malfunction
Detection
Malfunction is detected by converting the current flowing to power transistor into voltage with
CT1 (DC current sensor).
Malfunction
Decision
Conditions
When overcurrent has run to power transistor.
(Actuated even by instantaneous overcurrent)
Supposed
Causes
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.
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