OCH791 _67
6832 (E3)/6833 (E5): MA communication send error
Chart 1 of 2
Abnormal points and detection methods
Detected in remote controller or indoor unit.
Causes and checkpoints
• There are 2 remote controllers set as main.
• Malfunction of remote controller sending/receiving cir
-
cuit
• Malfunction of sending/receiving circuit on indoor con
-
troller board
• Remote controller transmitting error caused by noise
interference
Diagnosis of failure
Check the remote controller for
main-sub setting.
Conduct the remote controller
diagnosis twice or more times.
Set 1 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 seconds at maximum until the result is displayed.
No abnormality
A connector or wiring contact failure is suspect
-
ed.
Continue to the next page.
Turn the power back ON
No abnormality
It might be caused by an external noise, so
check the transmission line.
Replace the remote controller.
Replace the indoor controller board with the
LED2 blinking.
Is error code 6832 or 6833
still displayed?
Is there only 1 remote
controller set as the main
controller?
Is “OK” displayed on all
remote controllers?
Does “Please Wait”
disappear within 6 minutes?
Is “NG” displayed?
Is “6832” or “ERC”
displayed?
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No