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(5) Cut the jumper wires of the service P.C. board as indicated in the table below.
These settings are different from the settings for the jumpers on the P.C. board (malfunctioning board) prior
to its replacement.
If the model setting is not selected, inspection code "L10" will be displayed, and the outdoor unit operation
will remain stopped.
Model name
Service P.C. board
MCY-MHP0404HT -
MCY-MHP0504HT -
MCY-MHP0604HT -
Interface P.C. board
(43H69011)
DIP switch setting location
SW06
SW07
SW09
SW11
SW12
SW13
SW16
SW17
Jumper wire setting location
J12
J11
J10
J09
Short connector
J08
(6) Set the DIP switches of the service P.C. board to the settings used before replacement.
(7) The short connectors must be connected at the address setup stage. Therefore, when replacing the P.C.
board, leave the shipment settings unchanged, and after having replaced the board, follow the instructions in
section 8-4. "Address setup" in the service manual.
(8) After setting the jumper wires of the service P.C. board, install the board in the outdoor control unit.
(9) Connect the connectors of lead wires which were disconnected when the P.C. board was replaced, as shown
on the wiring diagram display panel.
(Check that the connectors have been inserted correctly and securely to prevent connection errors.)
(10) If any of the components on the P.C. board have been bent in the course of the replacing the board, rework
them so that they do not come into contact with the other components.
(11) Install the cover, turn on the power, and check operation.
AMP Air Conditioning
Factory default
Disconnect
Leave intact
Disconnect
①
SW10
①
SW14
①
J08
J09
Yes
Yes
Disconnect
Leave intact
Leave intact
①
①
①
170
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Jumper wires
J10
J11
Yes
Yes
Leave intact
Leave intact
Disconnect
Leave intact
Disconnect
Leave intact
①
7-segment display
D600
D601
D602
①
① (Card edge spacer)
Push this in the direction of the
arrow to unlock and remove the
P.C. board assembly.
J12
Yes
Disconnect
Disconnect
Disconnect
D603
D604
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Table of Contents
Troubleshooting
