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SiBE05-722ED
Check
Service Diagnosis
100
5.2
Hall IC Check
Check No.04
1. Check the connector connection.
2. With the power on, operation off, and the connector connected, check the following.
∗
Output voltage of about 5 V between pins 1 and 3.
∗
Generation of 3 pulses between pins 2 and 3 when the fan motor is operating.
If NG in step 1
Æ
Defective PCB
Æ
Replace the PCB.
If NG in step 2
Æ
Defective Hall IC
Æ
Replace the fan motor.
If OK in both steps 1 and 2
Æ
Replace the PCB.
5.3
Power Supply Waveforms Check
Check No.11
Measure the power supply waveform between No. 1 and No. 2 on the terminal board, and check
the waveform disturbance.
Check if the power supply waveform is a sine wave. (Fig.1)
Check if there is waveform disturbance near the zero cross. (sections circled in Fig.2)
1
Gray (power supply)
Purple (signals)
Blue (grounding)
2
3
(R14211)
S7
Fig.1
Fig.2
(R1736)
(R1444)
Содержание BA-Series
Страница 12: ...SiBE05 722ED 1 List of Functions Part 1 List of Functions 1 Functions 2 ...
Страница 18: ...SiBE05 722ED 7 Specifications Part 2 Specifications 1 Specifications 8 1 1 Cooling Only 8 1 2 Heat Pump 11 ...
Страница 64: ...SiBE05 722ED 53 Remote Controller Part 5 Remote Controller 1 Remote Controller 54 ...