Mitsubishi Electric Mr.Slim PUZ-HA42NKA Service Manual page 62

<Outdoor unit operation monitor function>
[When optional part "A-Control Service Tool(PAC-SK52ST)" is connected to outdoor controller board(CNM)]
ON
1 2 3 4 5 6
<Digital indicator LED1 working details>
1
The tens digit : Operation mode
Display Operation Model
O OFF / FAN
C COOLING / DRY
H HEATING
d DEFROSTING
2
Display Inspection unit
0 Outdoor unit
1 Indoor unit 1
2 Indoor unit 2
F3 63L connector(red) is open.
63H connector(yellow) is open.
F5
2 connectors(63H/63L) are open.
F9
Indoor/outdoor communication error (Signal receiving error) (Outdoor unit)
E8
Indoor/outdoor communication error (Transmitting error) (Outdoor unit)
E9
Miswiring of indoor/outdoor unit connecting wire, excessive number of indoor units (4 units or more)
EA
Miswiring of indoor/outdoor unit connecting wire(converse wiring or disconnection)
Eb
Startup time over
EC
Communication error except for outdoor unit
E0~E7
OCH567
The ones digit : Relay output
Display
0
1
2
3
4
5
6
7
8
A
Display Contents to be inspected (During operation)
U1 Abnormal high pressure (63H worked)
Abnormal high discharging temperature, shortage of refrigerant
U2
Open/short circuit of discharging thermistor (TH4) (TH34)
U3
U4 Open/short of outdoor unit thermistors (TH3, TH32, TH6, TH7 and TH8)
Abnormal temperature of heatsink
U5
Abnormality of power module
U6
U7 Abnormality of superheat due to low discharge temperature
Abnormality in outdoor fan motor
U8
Ud Overheat protection
Abnormal pressure of 63HS
UE
Compressor overcurrent interruption (When Comp. locked)
UF
UH Current sensor error
Abnormal low pressure(63L worked)
UL
Compressor overcurrent interruption
UP
P1~P8 Abnormality of indoor units
Abnormal refrigerant circuit
PL
A0~A7 Communication error of M-NET system
1 second
interval
ON
1 2 3 4 5 6
Warming-up
Compressor
Compressor
— —
— —
— —
— —
— ON
— ON
— ON
— ON
ON —
ON —
4-way valve
Solenoid valve
— —
— ON
ON —
ON ON
— —
— ON
ON —
ON ON
— —
ON —