<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)

Error code

Indication of the display

 

When the power is turned on

Lighted

Lighted

 

 

 

 

 

Alternately blinking display

 

 

 

 

 

When unit stops

Lighted

Not lighted

00, etc.

Operation mode

When compressor is warming up

Lighted

Not lighted

08, etc.

 

When unit operates

Lighted

Lighted

C5, H7 etc.

 

(2)Abnormal condition

Indication

 

 

Error

 

Outdoor controller board

Contents

Error

Inspection method

Detailed

 

 

code

reference

LED1 (Green)

LED2 (Red)

 

w1

 

page

1 blinking

2 blinking Connector(63L) is open.

F3 1Check if connector (63L or 63H) on the outdoor controller

P.35

 

 

Connector(63H) is open.

F5

board is not disconnected.

P.36

 

 

2 connectors are open.

F9

2Check continuity of pressure switch (63L or 63H) by tester.

P.36

2 blinking

1 blinking

Miswiring of indoor/outdoor unit conne-

— 1Check if indoor/outdoor connecting wire is connected correctly.

P.36

 

 

cting wire, excessive number of indoor

 

2Check if 4 or more indoor units are connected to outdoor unit.

(EA)

 

 

units (4 units or more)

 

 

 

Miswiring of indoor/outdoor unit co-

— 3Check if noise entered into indoor/outdoor connecting wire

P.36

 

 

nnecting wire (converse wiring or di-

 

or power supply.

(Eb)

 

 

sconnection)

 

 

 

Startup time over

—

4Re-check error by turning off power, and on again.

P.36

 

 

 

 

 

 

(EC)

 

 

 

 

 

 

2 blinking Indoor/outdoor unit communication error

E6 1Check if indoor/outdoor connecting wire is connected correctly.

w2

 

 

(signal receiving error) is detected by in-

 

2Check if noise entered into indoor/outdoor connecting wire or

 

 

 

door unit.

 

 

 

 

Indoor/outdoor unit communication error

E7

power supply.

w2

 

 

(transmitting error) is detected by indoor

 

 

 

3Check if noise entered into indoor/outdoor controller board.

 

 

 

unit.

 

 

 

 

 

4Re-check error by turning off power, and on again.

 

 

 

Indoor/outdoor unit communication error

—

P.41

 

 

(signal receiving error) is detected by

 

 

 

outdoor unit.

 

 

(E8)

 

 

Indoor/outdoor unit communication error

—

 

P.41

 

 

(transmitting error) is detected by outdoor

 

 

 

unit.

 

 

(E9)

 

3 blinking Remote controller signal receiving

E0

1Check if connecting wire of indoor unit or remote controller

P.40

 

 

error is detected by remote controller.

 

is connected correctly.

 

 

 

Remote controller transmitting error

E3

2Check if noise entered into transmission wire of remote

P.41

 

 

is detected by remote controller.

 

controller.

 

 

 

Remote controller signal receiving

E4

3Re-check error by turning off power, and on again.

P.40

 

 

error is detected by indoor unit.

 

 

 

 

 

Remote controller transmitting error

E5

 

P.41

 

 

is detected by indoor unit.

 

 

 

 

 

 

 

 

 

4 blinking Error code is not defined.

EF

1Check if remote controller is MA remote controller(PAR-21MAA).

P.41

 

 

 

 

2Check if noise entered into transmission wire of remote controller.

 

 

 

 

 

3Check if noise entered into indoor/outdoor connecting wire.

 

 

 

 

 

4Re-check error by turning off power, and on again.

 

 

5 blinking

Serial communication error

Ed

1Check if connector (CN4) on outdoor controller board and

P.41

 

 

<Communication between outdoor

 

outdoor power board is not disconnected.

 

 

 

controller board and outdoor power

 

 

 

 

board>

 

2Check if there is poor connection of connector on outdoor

 

 

 

<Communication between outdoor

 

controller board(CNMNT and CNVMNT).

 

 

 

controller board and M-NET P.C. board>

 

 

 

 

Communication error of M-NET

A0~A8

3Check M-NET communication signal.

P.42~

 

 

system

 

 

P.45

 

 

 

 

 

W1.Error code displayed on remote controller

W2.Refer to service manual for indoor unit.

74

Page 73 Page 75
Page 74
Image 74
Mitsubishi Electronics PUY-A24NHA2, PUZ-A42NHA2-BS, PUZ-A30NHA2, PUY-A36NHA2 Display function of inspection for outdoor unit
Page 73 Page 75

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