Mitsubishi Electric MXZ-SM72TAM-U1 Service Manual page 141

Remote controller check
Start checking?
Begin: SELECT
F1 F2
SELECT
MENU RETURN
3. Check the result of the remote controller check.
See the following descriptions for each result:
OK:
• The remote controller has no problem. Check other parts to find problems.
E3, 6832:
• There is noise on the transmission line, or the indoor unit or another remote controller is faulty. Check the transmis-
sion line and the other remote controllers.
NG (ALL0, ALL1):
• Send-receive circuit fault. The remote controller needs to be replaced.
ERC:
• The number of data errors is the discrepancy between the number of bits in the data transmitted from the remote
controller and that of the data that was actually transmitted over the transmission line. If data errors are found, check
the transmission line for external noise interference.
If the [SELECT] button is pressed after the remote controller check results are displayed, remote controller check will
end, and the remote controller will automatically reboot itself.
Remote controller check
OK
Exit : SELECT
Remote controller check results screen
Note:
• Check the remote controller display and see if anything is displayed (including lines). Nothing will appear on the
remote controller display if the correct voltage (8.5 – 12 VDC) is not supplied to the remote controller. If this is the
case, check the remote controller wiring and indoor units.
13-9. Smooth Maintenance
Operating instructions
1. Go to the "Smooth maintenance" screen.
• Select ˝Service˝ from the main menu, and press the [SELECT] button.
• Select ˝Check˝ with the F1 or F2 button, and press the [SELECT] button.
• Select ˝Smooth maintenance˝ with the F1 or F2 button, and press the [SELECT] button.
Check menu
Error history
Diagnosis
Smooth maintenance
Request code
Service menu: MENU
Cursor
F1 F2
MENU RETURN
2. Set the refrigerant address and the stable mode.
• Select the item to be changed with the F1 or F2 button.
• Select the required setting with the F3 or F4 button.
<Ref.address> setting: 0 - 15
OCH800A_141
F3 F4
ON
HOLD
OFF
F3 F4
ON
SELECT
HOLD
OFF