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Check
Si12-619A
260
Service Diagnosis
6. Check
6.1
How to Check
6.1.1
Fan Motor Connector Output Check
Check No.01
1. Check connector connection.
2. Check motor power supply voltage output (pins 4-7 and 4-8).
3. Check motor control voltage (pins 4-3).
4. Check rotation command voltage output (pins 4-2).
5. Check rotation pulse input (pins 4-1).
Check No.02
1. Check connector connection.
2. Check motor control voltage output (pins 2-1).
6.1.2
Limit Switch Continuity Check
Check No.03
Remove the front grille. The limit switch is located at the left side of the drain pan assembly.
Check the continuity of the switch connection.
∗
The shutter can be opened and closed with hand. Keep the shutter open and closed all the
way for each continuity check steps.
7
6
5
4
3
2
1
Motor power supply voltage
Unused
Unused
P.0V (reference potential)
Motor control voltage (15 VDC)
Rotation command voltage (1~ 5 VDC)
Rotation pulse input
S1 or S301
8
7
6
5
4
3
2
1
Motor power supply voltage
Unused
Unused
Unused
P.0V (reference potential)
Motor control voltage (15 VDC)
Rotation command voltage (1 to 5 VDC)
Rotation pulse input
S302
(R4684)
5
4
3
2
1
Motor power supply voltage
Unused
Unused
P.0V (reference potential)
Motor control power supply
S202
(R1073)
Tester
Limit switch
Forward
Upward
Shutter status
Continuity
Closed
No continuity
Open
Continuity
(Q0363)
Summary of Contents for 3MKS50DVM
Page 13: ...Introduction Si12 619A xii ...
Page 131: ...Control Specification Si12 619A 118 Function and Control ...
Page 213: ...Instruction Si12 619A 200 Operation Manual ...
Page 283: ...Check Si12 619A 270 Service Diagnosis ...
Page 302: ...Si12 619A Outdoor Unit E Series 50 52 58 Class Removal Procedure 289 Step Procedure Points ...
Page 385: ...Wiring Diagrams Si12 619A 372 Appendix FTK X S50 60 71FVLT ...
Page 399: ...Si12 619A vi Index ...