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8-7-4. Pulse Motor Valve (PMV) Forced Open/Close Function in Indoor Unit
This function is provided to fully open or close forcibly the PMV for 2 minutes in all indoor units, using the switch
operation on the interface P.C. board of the header unit.
This function is also used to open the PMV fully when turning off the power and executing an operation, for
example, vacuuming.
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 shown 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 shown on 7-segment display for one minute as follows.) [P ] [ 00]
[Clear]
After 2 minutes (1 minutes for “Close fully”) have passed when setup has finished, the PMV automatically
returns to the normal operation.
8-7-5. Pulse Motor Valve (PMV) Forced Open Fully/Close fully Function in
Outdoor Unit
This function is provided to fully open or close fully the P.M.V. (PMV1/PMV2/PMV3) used in the outdoor unit for 2
minutes.
I/F P.C. board
Check connector
CN30
Check connector
CN31
[Open fully]
Short-circuit CN30 on the interface P.C. board
of the header unit.
[Close fully]
Short-circuit CN31 on the interface P.C. board
of the header unit.
[Clear]
After 2 minutes, the opening returns to the
normal operation.
Be sure to remove the short circuit after confir-
mation.
[Operating method]
Select one of PMV1 or PMV2 to open. Turn SW12
bit 1 to OFF when handling (PMV1/PMV2), and turn
it to ON when selecting PMV3.
Enlarged diagram of switch position
Bit 1
SW12
OFF
ON
PMV1, PMV2
PMV3