Panasonic CS-E10JD3EA / U-E10HBEA / CS-E15JD3EA / CU-E15HBEA / CS-E18JD3EA / CU-E18HBEA Service Manual ▷ View online
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15.5.22. F98 (Input Over Current Detection)
Malfunction Decision Conditions
During operation of cooling and heating, when an input over-current (15.06A) is detected by checking the input current value
being detected by current transformer (CT) with the compressor running.
During operation of cooling and heating, when an input over-current (15.06A) is detected by checking the input current value
being detected by current transformer (CT) with the compressor running.
Malfunction Caused
• Over-current due to compressor failure.
• Over-current due to defective outdoor unit PCB.
• Over-current due to defective inverter main circuit electrolytic capacitor.
• Over-current due to excessive refrigerant.
• Over-current due to defective outdoor unit PCB.
• Over-current due to defective inverter main circuit electrolytic capacitor.
• Over-current due to excessive refrigerant.
Troubleshooting
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15.5.23. F99 (Output Over Current Detection)
Malfunction Decision Conditions
During operation of cooling and heating, when an output over-current (20.2A) is detected by checking the current that flows in the
inverter DC peak sensing circuitry.
During operation of cooling and heating, when an output over-current (20.2A) is detected by checking the current that flows in the
inverter DC peak sensing circuitry.
Malfunction Caused
• DC peak due to compressor failure.
• DC peak due to defective power transistor(s).
• DC peak due to defective outdoor unit PCB.
• DC peak due to defective power transistor(s).
• DC peak due to defective outdoor unit PCB.
Troubleshooting
• Checking the power transistor.
• Never touch any live parts for at least 10 minutes after turning off the circuit breaker.
• If unavoidable necessary to touch a live part, make sure the power transistor’s supply voltage is below 50V using the tester.
• For the UVW, make measurement at the Faston terminal on the board of the relay connector.
• Never touch any live parts for at least 10 minutes after turning off the circuit breaker.
• If unavoidable necessary to touch a live part, make sure the power transistor’s supply voltage is below 50V using the tester.
• For the UVW, make measurement at the Faston terminal on the board of the relay connector.
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16 Disassembly and Assembly Instructions
16.1. Disassembly of Parts
16.1.1.
Detaching the Upper and Inner Casing
1. Unscrew the 10 screws on the Upper and Inner Casing
and detach them
16.1.2.
Detaching the Control Board
1. Unscrew the 2 screws on the Control Board and open the
Control Board Cover.
2. Pull the Control Board down following the Slide Guide.
3. Lift the Control Board up from the bottom, disengage the
Catch holding the Board.
WARNING
High Voltage are generated in the electrical parts area by the capacitor. Ensure that the capacitor has discharged sufficiently before proceeding
with repair work. Failure to heed tis caution may result in electric shocks.
with repair work. Failure to heed tis caution may result in electric shocks.
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16.1.3.
Detaching the Fan
1. First detach the Upper and Inner Casing (16.1.1)
2. Disengage the 4 catches (2 each on the left and right) on
the Air Guide.
3. Use a 2.5 mm hexagonal wrench to loosen the 2 bolts
connecting the Fan Motor and Fan, detach the shaft
connecting the Fan Motor and Fan, loosen the screw
holding the Fan and detach the Fan.
connecting the Fan Motor and Fan, loosen the screw
holding the Fan and detach the Fan.
16.1.4.
Detaching the Fan Motor and Drain Motor
1. First detach the Upper and Inner Casing (16.1.1) and the
Fan (16.1.3).
2. Unscrew the 4 screws holding the Fan Motor and detach
it.
1. First detach the Upper and Inner Casing (16.1.1) and the
Fan (16.1.3).
2. From the Fan Motor side, undo the 2 hexagon bolts and
detach the Drain Motor.
Fan Motor
Drain Motor
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