Mitsubishi Electric PUMY-P112VKM1, Руководство по обслуживанию

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Check code
6831
6834
MA communication receive error
Abnormal points and detection methods Causes and check points
Detected in remote controller or indoor unit:
When the main or sub remote controller cannot receive signal from
indoor unit which has the "0" address.
When the sub remote controller cannot receive signal.
When the indoor controller board cannot receive signal from remote
controller or another indoor unit.
When the indoor controller board cannot receve signal.
Contact failure of remote controller wirings
Irregular Wiring
(A wiring length, number of connecting remote
controllers or indoor units, or a wiring thickness does
not meet the conditions specified in the chapter
"Electrical Work" in the indoor unit Installation
Manual.)
Malfunction of the remote controller sending/
receiving circuit on indoor unit with the LED2 is
blinking.
Malfunction of the remote controller sending/
receiving circuit
Remote controller transmitting error caused by noise
interference
●Diagnosis of defectives
Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards
Diagnosis Remedy
Check the remote controller for
main-sub setting.
Conduct the Remote Controller
Diagnosis 2 or more times.
Is "RC NG"
displayed?
Turn the power back ON.
No
Is "RC 6832" or
"ERC01" to "ERC66"
displayed?
No abnormality
It might be caused by an external noise, so
check the transmission line.
Yes
No
Yes
Chart 1 of 2
No
No
No
Yes
Yes
No
Yes
Yes
Is the check code
<6831> or <6834>still
displayed?
Is there only 1 remote controller
set as the main controller?
Does "HO"or "Please
wait" disappear within
6 minutes?
Is "RC OK" displayed on
all remote controllers?
Set one remote controller to main remote
controller, and the other to sub.
Disconnect and reconnect the
connector CN3A, then turn the
power back ON.
Note:
It takes 6 sec. at maximum until
the result is displayed.
Continue to the next page
No abnormality
A connector or wiring contact failure is
suspected.
Replace the remote controller.
Replace the indoor controller board with
the LED2 is blinking.
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OCH576