Mitsubishi Electric PUZ-HWM140VHA, Руководство по обслуживанию

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26
OCH748
Check Code Abnormal point and detection method Cause Judgment and action
E1
or
E2
(6201
or
6202)
Remote controller control board
1
Abnormal if data cannot be read nor-
mally from the nonvolatile memory of
the remote controller control board.
(Check code: E1)
2
Abnormal if the clock function of remote
controller cannot be operated normally.
(Check code: E2)
1
Defective remote controller
1
Replace remote controller.
E3
or
E5
(6832
or
6833)
Remote controller transmission error
(E3)/signal receiving error (E5)
1
Abnormal if remote controller could not
find blank of transmission path for 6 sec-
onds and could not transmit.
(Check code: E3)
2
When remote controller receives the
transmitted data same time and com-
pares these data. Abnormal if the data is
judged to be different for 30 continuous
times. (Check code: E3)
1
Abnormal if Interface/Flow temp. control-
ler board could not find blank of transmis-
sion path. (Check code: E5)
2
When Interface/Flow temp. controller
receives the transmitted data same time
and compares these data. Abnormal if
the data is judged to be different for 30
continuous times. (Check code: E5)
1
Refer to the indoor unit's
Installation Manual for remote
controller connection.
2
Defective transmitting receiv-
ing circuit of remote controller
3
Defective transmitting receiv-
ing circuit of Interface/Flow
temp. controller board
4
Noise has entered into trans-
mission wire of remote con-
troller.
1
Refer to the indoor unit's Installation Manual
for remote controller connection.
2
–
4
Diagnose remote controller.
a) When “OK” is displayed, remote con-
trollers have no problem.
Turn the power off, and on again to
check.
When becoming abnormal again,
replace indoor controller board.
b) When “NG” is displayed, replace
remote controller.
c) When “E3” or “00–66” is displayed,
noise may be causing abnormality.
E8
(6840)
Indoor/outdoor unit communication
error (Signal receiving error)
(Outdoor unit)
(1) Abnormal if outdoor controller circuit
board could not receive anything
normally for 3 minutes.
1
Contact failure of indoor/out-
door unit connecting wire
2
Defective communication cir-
cuit of outdoor controller circuit
board
3
Defective communication
circuit of indoor controller
board
4
Noise has entered into indoor/
outdoor unit connecting wire.
1
Check disconnection or looseness of indoor/
outdoor unit connecting wire of Interface
unit/Flow temp. controller or outdoor unit.
2
–
4
Turn the power off, and on again to check.
Replace indoor controller board or outdoor
controller circuit board if abnormality is
displayed again.
E9
(6841)
Indoor/outdoor unit communication
error (Transmitting error) (Outdoor unit)
(1) Abnormal if “0” receiving is detected 30
times continuously though outdoor con-
troller circuit board has transmitted “1”.
(2) Abnormal if outdoor controller circuit
board could not find blank of transmission
path for 3 minutes.
1
Indoor/outdoor unit connecting
wire has contact failure.
2
Defective communication circuit
of outdoor controller circuit
board
3
Noise has entered power supply.
4
Noise has entered indoor/
outdoor unit connecting wire.
1
Check disconnection or looseness of indoor/
outdoor unit connecting wire.
2
–
4
Turn the power off, and on again to
check. Replace outdoor controller circuit
board if abnormality is displayed again.
EF
(6607
or
6608)
Non defined check code
This code is displayed when non defined
check code is received.
1
Noise has entered transmis-
sion wire of remote controller.
2
Noise has entered indoor/out-
door unit connecting wire.
12
Turn the power off, and on again to check.
Replace indoor/outdoor controller circuit
board if abnormality is displayed again.
Ed
(0403)
Serial communication error
Abnormal if serial communication between
outdoor controller circuit board and out-
door power circuit board is defective.
1
Wire disconnection or contact
failure of connector CN2
between the outdoor controller
circuit board and the outdoor
power circuit board
2
Wire disconnection or contact
failure of connector CN4
between the outdoor controller
circuit board and the outdoor
power circuit board
3
Defective communication circuit
of outdoor power circuit board
4
Defective communication circuit
of outdoor controller circuit board
for outdoor power circuit board
12
Check connection of each connector CN2
and CN4 between the outdoor controller
circuit board and the outdoor power circuit
board.
3
Replace outdoor power circuit board.
4
Replace outdoor controller circuit board.