Display Function Of Inspection For Outdoor Unit; Normal Condition; Abnormal Condition - Mitsubishi Electric PUHZ-SW75VHA Service Manual

<Display function of inspection for outdoor unit>
The blinking patterns of both LED1 (green) and LED2 (red) indicate the types of abnormality when it occurs. Types of abnor-
mality can be indicated in details by connecting an optional part "A-Control Service Tool (PAC-SK52ST)" to connector CNM on
outdoor controller board.
[Display]

(1)Normal condition

Unit condition
When the power is turned on
When unit stops
When compressor is warming up
When unit operates

(2)Abnormal condition

Indication
Outdoor controller board
LED1 (Green) LED2 (Red)
1 blinking 2 blinking
Connector(63L) is open.
Connector(63H) is open.
2 connectors are open.
Miswiring of I/F or FTC or outdoor unit
2 blinking 1 blinking
connecting wire, excessive number of
indoor units (4 units or more)
Miswiring of I/F or FTC or outdoor unit
connecting wire (converse wiring or
disconnection)
Startup time over
I/F or FTC or outdoor unit communication
2 blinking
error (signal receiving error) is detected by
FTC unit.
I/F or FTC or outdoor unit communication
error (signal receiving error) is detected by
outdoor unit.
I/F or FTC or outdoor unit communication
error (transmitting error) is detected by
outdoor unit.
3 blinking
Remote controller signal receiving
error is detected by remote controller.
Remote controller transmitting error
is detected by remote controller.
Remote controller signal receiving
error is detected by I/F or FTC unit.
Remote controller transmitting error
is detected by I/F or FTC unit.
4 blinking
Error code is not defined.
1 Error code displayed on remote controller
2 Refer to Technical manual of ATW, I/F, FTC.
OCH533A
Outdoor controller board
LED1 (Green) LED2 (Red)
Lighted
Lighted Not lighted
Lighted Not lighted
Lighted
Contents
Error code
Lighted
00, etc.
08, etc.
Lighted C5, H7 etc.
Error
Error
Inspection method
code
1
F3
Check if connector (63H or 63L) on the outdoor controller
F5 board is not disconnected.
Check continuity of pressure switch (63H or 63L) by tester.
F9
—
Check if I/F or FTC or outdoor connecting wire is connected
correctly.
Check if 4 or more I/F or FTC units are connected to
—
outdoor unit.
Check if noise entered into I/F or FTC or outdoor connecting
wire or power supply.
—
Re-check error by turning off power, and on again.
E6 Check if I/F or FTC or outdoor connecting wire is connected
correctly.
Check if noise entered into I/F or FTC or outdoor connecting
—
wire or power supply.
(E8)
Check if noise entered into I/F or FTC or outdoor controller
—
board.
(E9)
Re-check error by turning off power, and on again.
Check if connecting wire of I/F or FTC unit or remote controller
E0
is connected correctly.
Check if noise entered into transmission wire of remote
E3
controller.
Re-check error by turning off power, and on again.
E4
E5
Check if noise entered into transmission wire of remote
EF
controller.
Check if noise entered into I/F or FTC or outdoor connecting
wire.
Re-check error by turning off power, and on again.
54
A-Control Service Tool
Indication of the display
Alternately blinking display
Operation mode