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Trouble shooting
Si04-115
78
Service Diagnosis
Troubleshooting
∗
Erroneous internal wiring can result in output overcurrent in some cases. If system stops due
to output overcurrent after parts replacement that requires disconnection of wires, check
wiring carefully
Check No.3
Refer to P.85
Check No.4
Refer to P.87
Check No.12
Refer to P.90
Check No.6
Refer to P.89
Turn off power, and turn it on
again. Then, check if error is
generated again.
NO
NO
NO
Is error generated again?
Is power transistor normal?
Supply voltage check.
Monitor supply voltage,
discharge/sunction pressures, etc.
for an extended period of time.
Possible causes
n
Momentary supply voltage drop
n
Excessive load on compressor
motor
n
Shorting in electric circuit due to
contact
Is stop valve fully open?
NO
Are outputs
of phases U, V and W
balanced?
NO
Is supply voltage at
related value?
YES
Mechanical
locking of compressor,
shorting of coil phases,
wire breakage?
Check No.3
Power transistor check.
Check No. 4
Power transistor output check.
Check No.12
Discharge pressure check.
Check No.6
Installation condition check.
YES
YES
YES
NO
YES
YES
Fully open stop valve.
Can be used as is.
Check connectors of electric
components.
Replace power transistor.
Replace outdoor unit PCB.
Correct power supply.
Replace compressor.
(R1956)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Содержание FTK25JV1NB9
Страница 10: ...Si04 115 List of Function 1 Part 1 List of Function 1 Functions 2 1 1 Indoor Unit and Outdoor Unit 2...
Страница 50: ...Si04 115 System Configuration 41 Part 5 System Configuration 1 Instruction 42 1 1 FTK25 35J FTX25 35J 42...
Страница 69: ...Instruction Si04 115 60 System Configuration...
Страница 134: ...Si04 115 For RK25J RK35J RX25J RX35J Removal Procedure 125 2 Slide the MID upward and release Step Procedure Points...
Страница 136: ...Si04 115 For RK25J RK35J RX25J RX35J Removal Procedure 127 4 Remove the fan motor Step Procedure Points...
Страница 145: ...For RK25J RK35J RX25J RX35J Si04 115 136 Removal Procedure...
Страница 146: ...Si04 115 Others 137 Part 8 Others 1 Others 138 1 1 Explanation 138...