Pulse Motor Valve (Pmv) Forced Open/Close Function In Indoor Unit; Open Fully; Close Fully; Clear - Toshiba Super MMU-AP0091H Service Manual

8-7-5. Pulse Motor Valve (PMV) Forced Open/Close Function in Indoor Unit

This function is provided to open or close forcedly PMV for 2 minutes in all the indoor units by the switch opera-
tion on the interface P .C. board of the header unit.
This function is also used to open PMV fully when turning off the power and executing an operation.
<Operation>

[Open fully]

Set the switch SW01 on the interface P .C. board of the header unit to [2], SW02 to [3], SW03 to [1], and push
SW04 for 2 seconds or more.
(Display appears on 7-segment display for 2 minutes as follows.) [P ] [ FF]

[Close fully]

Set the switch on the interface P .C. board of the header unit SW01 to [2], SW02 to [3], SW03 to [1], and push
SW05 for 2 seconds or more.
(Display appears on 7-segment display for one minute as follows.) [P ] [ 00]

[Clear]

After 2 minutes (1 minutes for "Close fully") passed when setup has finished, the opening automatically
returns to the normal opening.
8-7-6. Pulse Motor Valve (PMV) Forced Open Fully/Close fully Function in
Outdoor Unit
This function is provided to forcedly open or close fully P .M.V. (PMV1/PMV2) used in the outdoor unit for 2
minutes.
[Open fully]
Short-circuit for CN30 on the outdoor interface P .C. board.
[Close fully]
Short-circuit for CN31 on the outdoor interface P .C. board.
[Clear]
After 2 minutes, the opening returns to the normal opening.
Be sure to remove the short-circuited (as short pin, etc.) after confirmation.
I/F P.C. board
Check connector
121
Check connector
CN30 CN31