Led Display Designations; Displays; Sensor And Communication Error Displays - Mitsubishi Electric PAC-YG63MCA Installation Instructions Manual

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10

LED Display Designations

The LEDs of this device indicate the upper/lower limit alarm interlock output status and error status of this device.
10-1.Alarm Setpoint Output and Error Displays
Display Item
Power supply status
Output
Ch1, 2
status
Error status (*1)
*1: When a sensor error or communication error occurs, the error status is displayed.

10-2.Sensor and Communication Error Displays

If a sensor error or communication error occurs, a 4-digit error code will be repeatedly displayed according to the steps
shown below.
"Sensor and Communication Error Displays" consist of the following 10 steps. This operation is performed repeatedly to
indicate the 4-digit error code for the error.
LED11
Common
STEP1
STEP2
STEP3
STEP4
STEP5
STEP6
STEP7
STEP8
STEP9
STEP10
The error codes that are displayed for M-NET communication errors and sensor errors are as shown below.
Error Code
6600
Multiple address error
6601
M-NET polarity unset error
6602
Transmission processor hardware error
6603
Transmission bus-busy error
6606
Communications with transmission processor error
(1) Power supply to CPU
(2) Power supply to M-NET
circuit
(1) Upper/lower limit alarm
interlock output status
(1) 4-digit error code
LED12
LED13
LED14
Error code display (Binary number indication)
3
2
2
=8
2
=4
/
/
/
/
/
/
/
/
Description of Error
Display LED
LED16
(CPU power on)
LED17
(M-NET power on)
LED03/02
(Output LEDs)
LED12/13/14/15
(Status display LEDs)
LED15
1
0
2
=2
2
=1
Communication Error
Starting Point Indication
/
/
Error code 1000's digit
/
/
Error code 100's digit
/
/
Error code 10's digit
/
/
Error Code
6607
6608
5010
5020
13
Content
Note
:On,
:Off,
: Lights when the CPU is energized.
: Flashes during M-NET communication.
: Lights when the M-NET is energized.
Ch1
Output
Method
LED 03
Level
: Alarm output
Output
: Alarm stop
Refer to "10-2. Sensor and Communication Error

Displays".

Note
Function
"Sensor and
Displays"
Blank
Blank
Blank
Blank
Error code 1's digit indication
Error code 1's digit
Blank
Description of Error
No ACK error
No return of response frame
Sensor trouble in Channel 1
Sensor trouble in Channel 2
:Flashing
Ch2
LED 02
: Alarm output
: Alarm stop
:On,
:Off,
:Flashing
Remark
LEDs 12 to 15 flash 3 times
Turn Off
Error code 1000's digit
indication
In the case of 6,
Turn Off
Error code 100's digit
indication
In the case of 6,
Turn Off
Error code 10's digit
indication
In the case of 0,
Turn Off
In the case of 7,
Turn Off

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