ESIE02–01
Error Codes: System Malfunctions
Part 3 – Troubleshooting
3–57
3
3
4
5
1
4.4
Transmission Error between Indoor and Outdoor Unit (
U4
or
UF
)
Error code
U4
or
UF
LED indication
The table below shows the LED indication.
Error generation
The error is generated when the microprocessor detects that the transmission between the indoor and
the outdoor unit is not normal over a certain amount of time.
Causes
The possible causes are:
■
Wiring indoor-outdoor transmission wire is incorrect
■
Malfunctioning indoor unit PCB
■
Malfunctioning outdoor unit PCB
■
Outside cause (noise...).
Operation
HAP (green)
H1P (red)
H2P (red)
Normal
6
8
8
Malfunctioning
—
—
—
Содержание FHC45BZ7V1
Страница 1: ...ESIE02 01 Service Manual Sky Air R 407C B series SV p p p...
Страница 2: ......
Страница 3: ...ESIE02 01 Service Manual Sky Air R 407C B series SV p p p...
Страница 4: ......
Страница 16: ...Introduction ESIE02 01 xii 3 1 4 5...
Страница 18: ...ESIE02 01 1 2 Part 1 System Outline 3 1 1 5...
Страница 42: ...General Outline Outdoor Units ESIE02 01 1 26 Part 1 System Outline 3 1 1 4 5...
Страница 49: ...ESIE02 01 General Outline Indoor Units Part 1 System Outline 1 33 3 1 4 5...
Страница 72: ...General Outline Indoor Units ESIE02 01 1 56 Part 1 System Outline 3 1 1 4 5...
Страница 86: ...Specifications ESIE02 01 1 70 Part 1 System Outline 3 1 1 4 5...
Страница 110: ...ESIE02 01 1 94 Part 1 System Outline...
Страница 130: ...Switch Box Layout ESIE02 01 1 114 Part 1 System Outline 3 1 1 4 5...
Страница 180: ...PCB Layout ESIE02 01 1 164 Part 1 System Outline 3 1 1 4 5...
Страница 182: ...ESIE02 01 2 2 Part 2 Functional Description 3 1 2 5...
Страница 204: ...General Functionality ESIE02 01 2 24 Part 2 Functional Description 3 1 2 4 5...
Страница 216: ...Overview of the cooling mode functions ESIE02 01 2 36 Part 2 Functional Description 3 1 2 4 5...
Страница 232: ...ESIE02 01 3 2 Part 3 Troubleshooting 3 1 3 5...
Страница 294: ...Error Codes System Malfunctions ESIE02 01 3 64 Part 3 Troubleshooting 3 1 3 4 5...