Mitsubishi Electric PUHZ-FRP71VHA2R1, Руководство по обслуживанию

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57
OCH665B
<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
abnormality 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
Outdoor controller board A-Control Service Tool
LED1 (Green) LED2 (Red) Check code Indication of the display
When the power is turned on Lit Lit Alternately blinking display
When unit stops Lit Not lit 00, etc.
Operation mode When compressor is warming up Lit Not lit 08, etc.
When unit operates Lit Lit C5, H7, etc.
(2)Abnormal condition
Indication Error
Outdoor controller board
Contents
Check
code *1
Inspection method
Detailed
reference
page
LED1 (Green) LED2 (Red)
1 blinking 2 blinking Connector (63H) is open.
F5
1 Check if connector (63H) on the outdoor controller board is
not disconnected.
2 Check continuity of pressure switch (63H) by tester.
P.26
2 blinking 1 blinking Miswiring of indoor/outdoor unit
connecting wire, excessive number
of indoor units (4 units or more) –
1
Check if indoor/outdoor connecting wire is connected
correctly.
2
Check if 4 or more indoor units are connected to
outdoor unit.
3
Check if noise entered into indoor/outdoor
connecting wire or power supply.
4
Re-check error by turning off power, and on again.
P.27
(EA)
Miswiring of indoor/outdoor unit connecting
wire (reverse wiring or disconnection)
–
P.27
(Eb)
Startup time over
–
P.27
(EC)
2 blinking Indoor/outdoor unit communication
error (signal receiving error) is
detected by indoor unit. E6
1 Check if indoor/outdoor connecting wire is connected
correctly.
2 Check if noise entered into indoor/outdoor
connecting wire or power supply.
3 Check if noise entered into indoor/outdoor controller
board.
4 Re-check error by turning off power, and on again.
P.33
Indoor/outdoor unit communication
error (transmitting error) is detected
by indoor unit.
E7 P.33
Indoor/outdoor unit communication
error (signal receiving error) is
detected by outdoor unit.
–
P.33
(E8)
Indoor/outdoor unit communication
error (transmitting error) is detected
by outdoor unit.
–
P.33
(E9)
3 blinking Remote controller signal receiving error is
detected by remote controller.
E0
1
Check if connecting wire of indoor unit or remote
controller is connected correctly.
2
Check if noise entered into transmission wire of
remote controller.
3
Re-check error by turning off power, and on again.
P.32
Remote controller transmitting error
is detected by remote controller.
E3 P.32
Remote controller signal receiving
error is detected by indoor unit.
E4 P.32
Remote controller transmitting error
is detected by indoor unit.
E5 P.32
4 blinking Check code is not defined.
EF
1
Check if remote controller is MA remote controller(PAR-21MAA).
2
Check if noise entered into transmission wire of remote controller.
3
Check if noise entered into indoor/outdoor connecting wire.
4
Re-check error by turning off power, and on again.
P.33
Reverse connection of ATA/ATW
communication wire
EE
1 Correct the wiring according to 7 WIRING DIAGRAM.
TB1 — Indoor unit
TB2 — Cylinder/Hydrobox unit
2 Correct the wiring according to 7 WIRING DIAGRAM.
TB1 — CNS
TB2 — CNS2
P.33
Abnormality of refrigerant
PL
1 Be sure to replace the 4-way valve.
2 Check refrigerant pipes for disconnection or leakage.
3 After the recovery of refrigerant, vacuum dry the
whole refrigerant circuit.
4
Refer to section ″10-6 HOW TO CHECK THE PARTS.″
5 Check refrigerant circuit for operation.
P.34
5 blinking Serial communication error
<Communication between outdoor controller
board and outdoor power board>
<Communication between outdoor
controller board and M-NET P.C. board>
Ed
1
Check if connector (CN4) on outdoor controller board and
outdoor power board is not disconnected.
2
Check if there is poor connection of connector on
outdoor controller board(CNMNT and CNVMNT).
3
Check M-NET communication signal.
P.34
*1
Check code displayed on remote controller