Mitsubishi Electric PU-P71VHA 2.UK Series Service Manual page 40

11-3-2. Remote controller ch eck <PAR-31MAA>
If operations cannot be completed with the remote controller, diagnose the remote controller with this function.
1
Select "Service" from the Main menu, and press the
Select "Remote controller check" with the F1 or F2 button, and press
the button.
2
Select "Remote controller check" from the Service menu, and press the
ton to start the remote controller check and see the check results.
To cancel the remote controller check and ex it the Remote controller check
menu screen, press the
The remote controller will not reboot itself.
3
OK: No problems are found with the remote controller. Check other
parts for problems.
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.
NG (ALL0, ALL1): Send-receive circuit fault. Remote controller needs replacing.
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 e x ternal noise inter-
ference.
If the button is pressed after the remote controller check results are dis-
played, remote controller check will end, and the remote controller will automati-
cally reboot itself.
Ch eck th e remote controller d isplay and see if anyth ing is d isplayed
(includ ing lines). Noth ing will appear on th e remote controller d isplay
if th e correct v oltage (8.5 – 12 VDC) is not supplied to th e remote con-
troller. If th is is th e case, ch eck th e remote controller wiring and ind oor
units.
OC37 9 J
or the button.
button.
but-
40
S v r e e c i e m u n
M a i n t e n a n c e p a s s w o r d
R e m o t e c o n t r o l l e r c h e c k
M i a m n n e : u
C s r u r o
F1 F2 F3 F4
R e m o t e c o n t r o l l e r c h e c k
S t a r t c h e c k i n g ?
B g e : n i
F1 F2 F3 F4
Remote controller ch eck results screen
R e m o t e c o n t r o l l e r c h e c k
S t a r t c h e c k i n g ?
B g e : n i
F1 F2 F3 F4