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5 Self-diagnosis reset
There are the following two ways of resetting self-diagnosis.
Press the A [ON/OFF] button and the C [TEMP. (
Press the A [ON/OFF] button.→ Self-diagnosis resets and indoor units stop.
9 Remote Controller Check
1 First check the power mark.
When normal voltage (DC12V) is not applied to the remote controller,
the power mark goes off.
When the power mark is off, check the remote controller wiring and
the indoor unit.
2 Switch to the remote controller check mode.
When the B [TEMP. (
)] button and D [
ment)] button are pressed simultaneously for 5 seconds or longer,
the figure shown below is displayed.
3 Remote controller check result
<When remote controller is normal>
Since there is no problem at the remote controller, check for other causes.
When the problem is other than the checked remote controller
(Error code 2) "E3" "6833" "6832" flash → Cannot send
There is noise on the transmission line, or the indoor unit or another
remote controller is faulty. Check the transmission line and the other
remote controllers.
4 Remote controller check reset
When the B [TEMP. (
)] button and D [
controller diagnosis is reset and the [HO] and run lamp flash and 30 seconds later the remote controller returns to its state before diagnosis.
)] button simultaneously for 5 seconds or longer. → Resets self-diagnosis and returns to the state before self-diagnosis.
(When operation is prohibited, this operation is ineffective.)
(Fan Speed Adjust-
(Fan Speed Adjustment)] button are pressed simultaneously for 5 seconds or longer, remote
When the air conditioner cannot be controlled from the simple MA controller,
use this function to check the remote controller.
When the A [ON/OFF] button is pressed,
remote controller check begins.
<When remote controller is faulty>
(Error display 1) "NG" flashes → Remote controller send/receive circuit abnormal
Remote controller switching is necessary.
(Error display 3) "ERC" and data error count are displayed → Data error generation
"Data error count" is the difference between the number of bits of remote controller
send data and the number of bits actually sent to the transmission line. In this
case, the send data was disturbed by the noise, etc. Check the transmission line.
When data error count is 02
Remote controller send data
Send data on transmission line
Power mark
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