![background image](http://html.mh-extra.com/html/daikin/altherma-ekhbh-series/altherma-ekhbh-series_service-manual_501281149.webp)
ESIE06-03
Additional Checks for Troubleshooting
3–63
3
3
4
5
1
5.14
Turning Speed Pulse Input on the Outdoor Unit PCB Check
Check No.15
Propeller fan motor
Make sure the voltage of 320±30V is being applied.
1
Stop the operation first and then the power off, and disconnect the connector S70.
2
Make sure there is about DC 320 V between pins 4 and 7.
3
With the system and the power still off, reconnect the connector S70.
4
Make a turn of the fan motor with a hand, and make sure the pulse (0-15 V) appears twice at pins
1 and 4.
If the fuse for fan motor protection is blown out, the outdoor-unit fan may also be in trouble. Check the
fan too.
If the voltage in Step (2) is not applied, it means the PCB is defective. Replace the PCB.
If the pulse in Step (4) is not available, it means the Hall IC is defective. Replace the DC fan motor.If
there are both the voltage (2) and the pulse (4), replace the PCB.
∗
Propeller fan motor: S70
1
2
3
4
5
6
7
DC320V
S70
PCB
Turning speed pulse input (0-15 V)
15V
Summary of Contents for Altherma EKHBH Series
Page 2: ...ESIE06 03 1 2 Part 1 System Outline 3 1 1 5 ...
Page 26: ...Functional Diagrams ESIE06 03 1 26 Part 1 System Outline 3 1 1 4 5 ...
Page 32: ...Piping Diagrams ESIE06 03 1 32 Part 1 System Outline 3 1 1 4 5 ...
Page 38: ...Switch Box Layout ESIE06 03 1 38 Part 1 System Outline 3 1 1 4 5 ...
Page 58: ...PCB Layout ESIE06 03 1 58 Part 1 System Outline 3 1 1 4 5 ...
Page 60: ...ESIE06 03 2 2 Part 2 Functional Description 3 1 2 5 ...
Page 68: ...Hydro box Functional Concept ESIE06 03 2 10 Part 2 Functional Description 3 1 2 4 5 ...
Page 88: ...ESIE06 03 3 2 Part 3 Troubleshooting 3 1 3 5 ...
Page 134: ...Error Codes System Malfunctions ESIE06 03 3 48 Part 3 Troubleshooting 3 1 3 4 5 ...
Page 152: ...Additional Checks for Troubleshooting ESIE06 03 3 66 Part 3 Troubleshooting 3 1 3 4 5 ...
Page 154: ...ESIE06 03 5 2 Part 5 Disassembly and Maintenance 3 1 5 ...