Service manual

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SERVICE FUNCTIONS10
MCF-13NV - MCF-24NV -
MCF-18NV -
E3
E3E4
MUCF-13NV - MUCF-24NV -
MUCF-18NV -
E3
E3E4
10-1. TIMER SHORT MODE
For service, set time can be shortened by short circuit of JPG and JPS on the electronic control P.C. board.
The time will be shortened as follows.(Refer to page 40.)
3-minute time delay : 3-minute → 3-second
AUTO START : 1 hour → 1-minute
AUTO STOP : 1 hour → 1-minute
10-2. P.C. BOARD MODIFICATION FOR INDIVIDUAL OPERATION
A maximum of 4 indoor units with wireless remote controllers can be used in a room. In this case, to operate each indoor
unit individually by each remote controller, P.C. boards of remote controller must be modified according to the indoor unit
number.
NOTE : Fore remodeling, take out the batteries at first.
After finish remodeling, put back the batteries then push the RESET-button.
The P.C. board has the print “J1” and “J2”. Jumper wires are mounted to each “J1” and “J2”. Cut J1 and J2
according to the number of indoor unit as shown in Table 1.
After modification, push the RESET button near the MIN.button on the remote controller.
No.1 unit
No.2 unit
No.3 unit
No.4 unit
1 unit operation
No modification
2 unit operation
Same as at left
Cut J1
3 unit operation
Same as at left
Same as at left
Cut J2
4 unit operation
Same as at left
Same as at left
Same as at left
Cut both J1 and J2
Table1.
How to modify the remote controller P.C. board
Remove batteries before modification.
The board has a print as shown below :
NOTE : For remodelling, take out the batteries
and press the
OPERATE/STOP(ON/OFF)button twice
or 3 times at first.
After finish remodelling, put back the
batteries then press the RESET button.
The P.C. board has the print “J1” and “J2”. Solder “J1” and “J2” according to the number of indoor unit as shown in Table 1.
After modification, press the RESET button.
NOTE : At power supply failure or installation, indoor unit deletes the memory about remote controller. When the power supply
is turned on and indoor unit receives the first signals from the remote controller, the remote controller number is desig-
nated as the indoor unit number. Therefore at and after the second time indoor unit accepts the remote controller of
the initial setting number.
At setting - error, turn the power supply off to cancel the individual operation and then turn the power supply on to
restart the setting.
10-3. RELEASE OF AUTO RESTART FUNCTION
Solder JHA (refer to page 40) with a jumper line on the indoor electronic control P.C. board.
Remove the auto restart assy from “Connector CN104”.
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