Mitsubishi PUZ-A18NHA6 - Ground

82
<Outdoor unit operation monitor function>
[When option part ‘A-Control Service Tool (PAC-SK52ST)’ is connected to outdoor controller board (CNM)]
DigitalindicatorLED1displays2digitnumberorcodetoinformoperationconditionandthemeaningofcheckcodeby
controllingDIPSW2on‘A-ControlServiceTool’.
SW2setting
1
ON
2 3 4 5 6
Displaydetail
Explanationfordisplay Unit
OperationindicatorSW2:Indicatorchangeofselfdiagnosis
<Digital indicator LED1 working details>
(Besurethat1to6intheSW2aresettoOFF.)
(1)DisplaywhenthepowersupplyON.
WhenthepowersupplyON,blinkingdisplaysbyturns.
Waitfor4minutesatthelongest.
(2)Whenthedisplaylights.(Normaloperation)
1Operationmodedisplay
1
ON
2 3 4 5 6
(Initialsetting)
SW2
1 second
interval
LED1
(Lighting)
Display Operation Model
The tens digit : Operation mode
The ones digit : Relay output
O
C
H
d
Display
0
1
2
3
4
5
6
7
8
A
Compressor
Warming-up Compressor
4-way valve
Solenoid valve
—
—
—
—
ON
ON
ON
ON
—
—
—
—
—
—
—
—
—
—
ON
ON
—
—
ON
ON
—
—
ON
ON
—
ON
—
ON
—
ON
—
ON
—
ON
—
—
OFF / FAN
COOLING / DRY
HEATING
DEFROSTING
2Displayduringerrorpostponement
Postponementcodeisdisplayedwhen
compressorstopsduetotheworkof
protectiondevice.
Postponementcodeisdisplayedwhile
errorisbeingpostponed.
(3)Whenthedisplayblinks
Inspectioncodeisdisplayedwhencompressorstopsduetotheworkofprotectiondevices.
Display Contents to be inspected (When power is turned on)
F3
F5
F9
E8
E9
EA
Eb
EC
E0–E7
63L connector(red) is open.
63H connector(yellow) is open.
2 connectors (63H/63L) are open.
Indoor/outdoor communication error (Signal receiving error) (Outdoor unit)
Indoor/outdoor communication error (Transmitting error) (Outdoor unit)
Miswiring of indoor/outdoor unit connecting wire, excessive number of indoor units (4 units or more)
Miswiring of indoor/outdoor unit connecting wire(converse wiring or disconnection)
Startup time over
Communication error except for outdoor unit
Display Inspection unit
0
1
2
Outdoor unit
Indoor unit 1
Indoor unit 2
Display Contents to be inspected (During operation)
U1
U2
U3
U4
U5
U6
U8
UF
UH
UL
UP
P1–P8
A0–A7
Abnormal high pressure (63H worked)
Abnormal high discharge temperature, shortage of refrigerant
Open/short circuit of comp. surface thermistor (TH32)
Open/short of outdoor unit thermistors (TH3, TH6, TH7, TH8 and TH33)
Abnormal temperature of heat sink
Abnormality of power module
Abnormality in outdoor fan motor.
Compressor overcurrent interruption (When Comp. locked)
Current sensor error
Abnormal low pressure (63L worked)
Compressor overcurrent interruption
Abnormality of indoor units
Communication error of M-NET system
Theblacksquare(■)indicatesaswitchposition.
OCH577A