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ESIE05-04
Troubleshooting
Part 3 – Troubleshooting
3–27
3
3
4
5
1
1.8
Troubleshooting by LED Indications on the Indoor Unit
Foreword
Troubleshooting can be carried out by service monitor LED (green). (Blinks when normal)
w
: LED on /
x
: LED off /
c
: LED blinks / — : No connection with troubleshooting
Notes:
1
When the INSPECTION/TEST button of remote controller is pushed, INSPECTION display blinks
entering INSPECTION mode.
2
In the INSPECTION mode, when the ON/OFF button is pushed and held for 5 seconds or more,
the aforementioned malfunctioning history display is off. In this case, after the malfunction code
blinks 2 times, the code display turns to “00” (=Normal) and the unit No. turns to “0”. The
INSPECTION mode automatically switches to the normal mode (set temperature display).
3
Operation halts due to malfunction depending on the model or condition.
4
If LED-B is off, the transmission wiring between indoor and outdoor unit may be incorrect or
disconnected. Before performing the previously described troubleshooting, check the transmission
wiring.
5
Troubleshoot by turning off the power supply for a minimum of 5 seconds, turning it back on, and
then rechecking the LED display.
Microcomputer
Normal Monitor
Transmission
Normal Monitor
Contents/Processing
HAP (LED-A)
HBP (LED-B)
c
c
Indoor unit normal
→
Outdoor unit trouble shooting
c
w
Incorrect transmission wiring between indoor and out-
door unit
x
If outdoor unit’s LED-A is off, proceed outdoor unit’s
trouble shooting. If outdoor unit’s LED-A blinks, failure of
wiring or indoor or outdoor unit P.C board ass’y. (Note 4)
w
—
Failure of indoor unit PC board ass’y (Note 5)
x
Malfunction of power supply or failure of PC board ass’y
or broken transmission wire between indoor and outdoor
unit. (Note 5)
Summary of Contents for FCQ35B7V1
Page 1: ...Service Manual ESIE05 04 R 410A Sky Air Indoor...
Page 2: ......
Page 20: ...ESIE05 04 1 2 Part 1 System Outline 3 1 1 5...
Page 62: ...General Outline ESIE05 04 1 44 Part 1 System Outline 3 1 1 4 5...
Page 78: ...ESIE05 04 1 60 Part 1 System Outline...
Page 112: ...Wiring Diagrams ESIE05 04 1 94 Part 1 System Outline 3 1 1 4 5...
Page 140: ...ESIE05 04 2 2 Part 2 Functional Description 3 1 2 5...
Page 164: ...ESIE05 04 3 2 Part 3 Troubleshooting 3 1 3 5...
Page 206: ...Error Codes ESIE05 04 3 44 Part 3 Troubleshooting 3 1 3 4 5...
Page 224: ...Additional Checks for Troubleshooting ESIE05 04 3 62 Part 3 Troubleshooting 3 1 3 4 5...
Page 226: ...ESIE05 04 4 2 Part 4 Commissioning and Test Run 3 1 4 5...
Page 252: ...ESIE05 04 5 2 Part 5 Disassembly and Maintenance 3 1 5...
Page 384: ...Disassembly and Maintenance ESIE05 04 5 134 Part 5 Disassembly and Maintenance 3 1 5 5...
Page 390: ...ESIE05 04 vi Index 3 1 4 5 W Wiring diagrams Indoor units k 1 61...