69
on
2
1
3 4 5 6 7 8
on
2
1
3 4 5 6 7 8
When the compressor is interrupted again
by over current after restarting in 3minutes,
it stops and restarts in 3minutes. Perform
the same action as
2
and
3
.
5) Disconnection of connector and
lead wire, and miss-wiring
Between multi controller board (CN4)
and power supply board (CN4)
Start-up the compressor and check
the status of interrupting.
When the compressor is not interrupted
within 30seconds after restarting in 3minutes,
clear the delay of limited abnormal stop and
back to normal.
Display
Meaning and detecting method
Causes
Check points
(1) When the compressor stops
(output signal stop) after immediately
after output signal comes out and is
interrupted abnormally.
When the above action
4
is repeated and
the compressor is interrupted within
30seconds after 7th start-up
(PUMY-125VMA PUMY-125VMA
1
: after
15th start-up),
or the compressor is interrupted during
confined the current-carry, it stops
abnormally. Then, the outdoor unit address
No. and check delay code <4250> blinks
alternately on the 4 digit digital display.
Generation of short-circuit
current is assumed.
(5),6),7),12),13))
(2) After 5seconds of start-up, when
the compressor stops by interruption,
being delay and repeats to confine
current-carry for 3minutes restart-
up interruption to confine
current-carry restart-up and
becomes interruption-abnormality
after approx. 18minutes from start-up.
(When the compressor is interrupted by
over current during the operation)
The compressor is assumed not to
start-up by torque shortage or lock.
(5), 6), 7), 9), 10), 11), 12))
When over current limit is detected after
30seconds from start-up, the compressor
stops and restarts in 3minutes.
(3) When the compressor stops after
a while by the interception though the
compressor starts once, and restarts
in 3minutes.
The compressor is being delay to stop
abnormally for 5minutes after the
compressor stop. (PUMY-125VMA PUMY-
125VMA
1
: 6minutes)
Then, the outdoor unit address No. and
check delay code <4350> blinks alternately
on the 4 digit digital display.
SW1 setting
It is presumed to stop since the
frequency goes up and the load grows
though the compressor starts. (4), 5),
6), 7), 8))
Check the miss-wiring, terminal
loosing and disconnection of
connector and lead wire.
When the compressor is interrupted again
within 2minutes after restarting in
3minutes, it stops abnormally. Then, the
outdoor unit address No. and check delay
code <4250> blinks alternately on the 4
digit digital display.
PUMY-125VMA : 6minutes, 4minutes.
Repair of defective points. (5), 11))
When the compressor is not interrupted
within 2minutes (PUMY-125VMA PUMY-
125VMA
1
: 3minutes)
after restarting in 3minutes, it becomes the
1st detection and performs the same action
as
1
and
2
.
Check the resistance of IPM.
In the case of abnormality, replace
the gate ampere board and IPM.
Check the resistance of diode stack.
6) IPM (intelligent power module)
drive circuit in the gate amplifier
defective
7) IPM (intelligent power module)
drive signal output circuit defective,
power factor detecting circuit failure
in the multi controller board.
8) Current detection defective
(AC,CT)
9) Compressor lock
10) Liquid sealing start-up of the
compressor
11) Open-phase at the compressor
side
12) IPM (intelligent power module)
failure
13) Power supply board abnormality
detecting circuit failure and IPM drive
power supply circuit failure
In the case of abnormality, replace
the diode stack.
When excluding of
456
,
Switch off and disconnect the
connection of the compressor after
confirming charge of main circuit
electrolysis capacitor is discharged
enough. Then, switch on and operate
in no-load.
(1) When the compressor is interrupted
again.
Replace the power supply board
when the compressor does not back to
normal even if the gate amplifier board
is replaced.
Replace the multi controller board
when the compressor does not back to
normal even if the power supply board
is replaced.
(2) Check the balance of inverter
output voltage. If it is unbalanced,···
Replace the power supply board
when the compressor does not back to
normal even if the gate ampere is
replaced.
Replace the multi controller board
when the compressor does not back to
normal even if the power supply board
is replaced.
1
2
3
4
5
4
6
3
4
5
6
7
4250
IPM abnormality
Over current limited
(When the compressor is interrupted by
over current at its start-up.)
2) Single interruption by lightening
serge
The interruption happens by accident.
Since the interception only once
returns automatically after restarting in
3minutes, the possibility to stop
abnormally is very few.
When over current limit is detected within
30seconds from start-up, the compressor
stops and restarts in 3minutes.
3) Power supply abnormality
Measure a receiving voltage and
check the power supply capacity
While the compressor stops for 3minutes,
confine the current-carry.
(a) Voltage decrease to 340V or less.
Check whether the phase is opened
or not.
Check from 4) to 13) by following
procedure;
When SW1 setting during delay of
interruption abnormality stop, the outdoor
unit address No. and check delay code
<4350> blinks alternately on the 4 digit
digital display.
(b) Power supply open-phase
SW1 setting
(Current increase in the compressor by
the voltage decrease)
4) Diode stack defective
When it is opened-phase, same
phenomenon occurs as power supply
open-phase.
1
2
1
2
3
PUMY-71VM PUMY-125VM PUMY-125YM
PUMY-71VM
1
PUMY-125VM
1
PUMY-125YM
1
PUMY-71VM
2
PUMY-125VM
2
PUMY-125YMA
1) Single interruption by external noise.
To be continued on the next page.
OC183E--3.qxp 10.5.6 3:05 PM Page 69
