Toshiba MCY-MHP0404HS-E Service Manual page 87

(2)Clearing check code by using switches on the interface board of the outdoor unit
Using the switches on the interface P.C. board of the outdoor unit, this function is to clear the currently detected
check code for each refrigerant circuit system without resetting the power supply.
Check codes in both outdoor and indoor units are once cleared, and check code detection is performed again.
(3)Clearing check code by resetting power
This function is provided to clear check code in a system by resetting the power of all the outdoor and the indoor units.
As same as the clearing method by the interface P.C. board, check codes of both the outdoor and the indoor units are
once cleared, and check code detection is performed again.
<Method>
(1) Be sure to reset power of both the outdoor and the indoor units.
(2) Turn on the power of the indoor unit prior to the power of the outdoor unit.
NOTE) After power reset, it requires usually 3 minutes to power-on due to the initial communication of the
system. In some cases, it requires max. 10 minutes.
AMP Air Conditioning
Set the rotary switches on the interface P.C. board of the
outdoor unit as follows.
Set SW01 / SW02 / SW03 to [2/16/1]
Press the push-switch SW04 on the same board for
5 to 10 seconds.
[ C L] is displayed in 7-segment display [B] on the board
(for 5 seconds), and the check code is completely cleared.
Interface P.C. board
SW04 SW05 SW15
D600 D601 D602 D603 D604
SW06 SW07 SW09 SW10
SW01 SW02 SW03
SW11 SW12 SW13 SW14
SW16 SW17
SW30
7-segment display
.
7-segment display
.
Push switch
SW04 SW05
7-segment
display [A]
D600 D601 D602 D603 D604
SW01 SW02
Rotary switches
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.
Push switch
SW15
7-segment
display [B]
SW03