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[7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ]
BS_07_C
chapter 7 -
53
7
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Er
ror Codes
7-8-18
Error Code [6840]
1. Error code definition
Indoor/outdoor unit communication error
2. Error definition and error detection method
Abnormal if indoor controller board could not receive any signal normally for 6 minutes after turning the power on
Abnormal if indoor controller board could not receive any signal normally for 3 minutes.
Consider the unit as abnormal under the following condition. When 2 or more indoor units are connected to an outdoor unit,
indoor controller board could not receive a signal for 3 minutes from outdoor controller circuit board, a signal which allows
outdoor controller circuit board to transmit signals.
3. Cause, check method and remedy
7-8-19
Error Code [6841]
1. Error code definition
A control communication synchronism not recover
2. Error definition and error detection method
Indoor/outdoor unit communication error (Outdoor unit)
Abnormal if "0" receiving is detected 30 times continuously though outdoor controller circuit board has transmitted "1".
Abnormal if outdoor controller circuit board could not find blank of transmission path for 3 minutes.
3. Cause, check method and remedy
Cause
Check method and remedy
(1)
Contact failure, short circuit or miswiring (converse wiring) of in-
door/outdoor unit connecting wire.
Check disconnecting or looseness of indoor
/outdoor unit connecting wire of indoor unit or
outdoor unit. Check all the units in case of
twin/triple/quadruple indoor unit system.
(2)
Defective transmitting receiving circuit of outdoor controller cir-
cuit board.
Turn the power off, and on again to check. If
abnormality generates again, replace indoor
controller board or outdoor controller circuit
board.
(3)
Defective transmitting receiving circuit of indoor controller board.
(4)
Noise has entered into indoor/outdoor unit connecting wire.
(5)
Defective fan motor
Turn the power off, and detach fan motor
from connector (CNF1). Then turn the power
on again. If abnormality is not displayed, re-
place fan motor. If abnormality is displayed,
replace outdoor controller circuit board.
(6)
Defective rush current resistor of outdoor power circuit board
Check the rush current resistor on outdoor
power circuit board with tester. If open is de-
tected, replace the power circuit board.
Cause
Check method and remedy
(1)
Indoor/outdoor unit connecting wire has contact failure.
Check disconnection or looseness of indoor/
outdoor unit connecting wire.
(2)
Defective communication circuit of outdoor controller circuit
board.
Turn the power off, and on again to check.
Replace outdoor controller circuit board if ab-
normality is displayed again.
(3)
Noise has entered power supply.
(4)
Noise has entered indoor/outdoor unit connecting wire.
0000004497.BOOK 53 ページ 2017年12月26日 火曜日 午前11時46分
Содержание PFD-P250VM-E
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