Mitsubishi Electric CITY MULTI PUHY-400YMF-C Service Handbook page 54

(3) Group registration of indoor unit
1) Registration method
• Group registration of indoor unit ........................................................................ 1
The indoor unit to be controlled by a remote controller is registered on the remote controller.
[Registration procedure]
1
With the remote controller under stopping or at the display of "HO", continuously press the
A B
( + ) at the same time for 2 seconds to change to the registration mode. (See the figure below.)
2
Assign the indoor unit address to "INDOOR UNIT ADDRESS NO." by operating the
C
adjustment) ( ).
Then press the TEST RUN
to 001.
3
After completing the registration, press the
change to the original ordinary mode (with the remote controller under stopping).
Ordinary mode
• Remote controller under stopping
˚C
INDOOR UNIT ERROR CODE
ADDRESS NO OA UNIT ADDRESS NO
Group setting mode
˚C
ERROR CODE
OA UNIT ADDRESS NO
TEMP
CLOCK ON OFF
PAR-F27MEA
TIMER SET
2
Assign the
C
address ( )
System example
Remote controller
D
switch ( ) to register. In the figure below, the "INDOOR UNIT ADDRESS NO." is being set
FILTER
1 1
ON/OFF
FILTER
CHECK TEST
1 3
Change to the Press the
registration registration
A B
mode ( ) switch ( )
+
Indoor units
Group
A
+
+ switch (
• "HO" under displaying
˚C
INDOOR UNIT ERROR CODE
ADDRESS NO OA UNIT ADDRESS NO
• Registration complete
Indicates the type of unit
(Indoor unit in this case)
2 3
+
• Registration error
"88" flickers indicating registra-
tion error. (when the indoor unit
registered is not existing)
• Confirm the indoor unit address No.
• Confirm the connection of the transmission line.
D
-51-
+
FILTER
(Room temperature
B
) at the same time for 2 seconds to
˚C
ERROR CODE
OA UNIT ADDRESS NO
˚C
ERROR CODE
OA UNIT ADDRESS NO
switch