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SiBE04-302
Troubleshooting
Service Diagnosis
117
4.19
Over-voltage Detection
Remote
Controller
Display
U2
Method of
Malfunction
Detection
An abnormal voltage rise is detected by checking the specified over-voltage detection circuit.
Malfunction
Decision
Conditions
An over-voltage signal is fed from the over-voltage detection circuit to the microcomputer
(The voltage is over 400V).
The system will be shut down if the error occurs 5 times.
Clearing condition: Continuous run for about 60 minutes (normal)
Supposed
Causes
Supply voltage not as specified
Over-voltage detection circuit defective
PAM control part(s) defective
Troubleshooting
Note:
If the model doesn’t have SPM, replace the outdoor unit PCB.
Check the supply voltage.
Correct the power supply.
Check for such factors for a
long term.
Replace the SPM.
(Replace the outdoor unit
PCB.)
(R2957)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Supply voltage as
specified?
NO
YES
Turn on the
power again.
Error displayed again?
YES
Repeat a
couple of times.
NO
Disturbance factors
∗
Noise
∗
Power supply distortion
Содержание ARK25BVMB
Страница 10: ...SiBE04 302 List of Function 1 Part 1 List of Function 1 Functions 2 1 1 Cooling Only 2 1 2 Heat Pump 5 ...
Страница 17: ...Functions SiBE04 302 8 List of Function ...
Страница 31: ...Specifications SiBE04 302 22 Specifications ...
Страница 137: ...Check SiBE04 302 128 Service Diagnosis ...
Страница 170: ...SiBE04 302 Outdoor Unit Removal Procedure 161 2 Slide the MID upward and release Step Procedure Points ...
Страница 172: ...SiBE04 302 Outdoor Unit Removal Procedure 163 4 Remove the fan motor Step Procedure Points ...
Страница 177: ...Outdoor Unit SiBE04 302 168 Removal Procedure 2 Slide the reactor assembly this side and release Step Procedure Points ...
Страница 184: ...SiBE04 302 Others 175 Part 8 Others 1 Others 176 1 1 Explanation 176 1 2 Jumper Settings 177 ...
Страница 195: ...Wiring Diagrams SiBE04 302 186 Appendix ...
Страница 199: ...SiBE04 302 iv Index ...