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5. Troubleshooting
Code 7937: “Fan speed heat exchanger front too low” (Warning)
Situation
Solution
Partial blocked heat exchanger fan
(reference 1image 5-52) Fan is still
turning but something slows down
the fan speed.
Unblock the fan. Ensure that the fan can turn freely. Fan is mounted above the heat
exchanger.
Damaged wire unit (reference
2image 5-52 and reference
20image 5-49)
Check if the wire unit of the fan is not damaged. Repair if possible, otherwise replace
with new one.
Malfunction Fan Control board.
Replace the Fan Control Board. See "Replacing the Fan control board", page 278.
Heat exchanger fan end of life.
Replace the fan. See "Replacing the heat exchanger fan", page 290.
1
2
Image 5-52
Code 7938: “Fan speed heat exchanger front too high” (Warning)
Situation
Solution
Malfunction heat exchanger fan
(reference 1 image 5-50).
Replace the Fan. See "Replacing the heat exchanger fan", page 290.
Malfunction Fan Control board.
Replace the Fan Control Board. See "Replacing the Fan control board", page 278.
Code 7939: “Fan speed heat exchanger front too high” (Error)
This error code is probably preceded by the warning code 7938: “Fan speed heat exchanger too high”. The same troubleshooting
table can be applied to.
Code 7940: “Fan speed mains input too low” (Error)
This error code is probably preceded by the warning code 7940: “Fan speed mains input too low”. The same troubleshooting table
can be applied to.
Code 7941: “Fan speed mains input too low” (Warning)
Situation
Solution
Partial blocked mains input fan
(reference 2image 5-53) Fan is still
turning but something slows down
the fan speed.
Unblock the fan. Ensure that the fan can turn freely.
Damaged wire unit (reference
1image 5-53 and reference
20image 5-49)
Check if the wire unit of the fan is not damaged. Repair if possible, otherwise replace
with new one.
Malfunction Fan Control board.
Replace the Fan Control Board. See "Replacing the Fan control board", page 278.
Mains input fan end of life.
Replace the fan. See "Mains input fan", page 295.
80
R5905312 HDF W SERIES 24/01/2013
Summary of Contents for HDF W series
Page 1: ...HDF W series Service manual R5905312 01 24 01 2013 ...
Page 4: ......
Page 8: ...Table of contents 4 R5905312 HDF W SERIES 24 01 2013 ...
Page 12: ...1 Safety 8 R5905312 HDF W SERIES 24 01 2013 ...
Page 30: ...3 Preventative maintenance actions 26 R5905312 HDF W SERIES 24 01 2013 ...
Page 35: ...5 Troubleshooting 5 TROUBLESHOOTING R5905312 HDF W SERIES 24 01 2013 31 ...
Page 36: ...5 Troubleshooting 32 R5905312 HDF W SERIES 24 01 2013 ...
Page 110: ...6 Removal and installation of the projector covers 106 R5905312 HDF W SERIES 24 01 2013 ...
Page 111: ...7 Power Input 7 POWER INPUT R5905312 HDF W SERIES 24 01 2013 107 ...
Page 112: ...7 Power Input 108 R5905312 HDF W SERIES 24 01 2013 ...
Page 120: ...7 Power Input 116 R5905312 HDF W SERIES 24 01 2013 ...
Page 172: ...10 Card Cage 168 R5905312 HDF W SERIES 24 01 2013 ...
Page 182: ...11 Lamp Power Supply 178 R5905312 HDF W SERIES 24 01 2013 ...
Page 183: ...12 Start Pulse Generator 12 START PULSE GENERATOR R5905312 HDF W SERIES 24 01 2013 179 ...
Page 184: ...12 Start Pulse Generator 180 R5905312 HDF W SERIES 24 01 2013 ...
Page 192: ...12 Start Pulse Generator 188 R5905312 HDF W SERIES 24 01 2013 ...
Page 242: ...14 Lenses and Lens Holder 238 R5905312 HDF W SERIES 24 01 2013 ...
Page 270: ...15 Liquid cooling circuit 266 R5905312 HDF W SERIES 24 01 2013 ...
Page 274: ...16 Heat exchanger Image 16 5 Remove assembly 270 R5905312 HDF W SERIES 24 01 2013 ...
Page 280: ...16 Heat exchanger Image 16 13 276 R5905312 HDF W SERIES 24 01 2013 ...
Page 309: ...19 Board Diagnostic LED s 19 BOARD DIAGNOSTIC LED S R5905312 HDF W SERIES 24 01 2013 305 ...
Page 310: ...19 Board Diagnostic LED s 306 R5905312 HDF W SERIES 24 01 2013 ...
Page 328: ...19 Board Diagnostic LED s 324 R5905312 HDF W SERIES 24 01 2013 ...