Work Procedure After Repair - Toshiba MMY-MUP0801HT8P-TR Service Manual

10-3. Work procedure after Repair

When vacuuming in the repaired outdoor unit, follow the procedure described below.
<Work procedure>
(1) Follow the procedure below to fully open PMV 1, 2, 3, and 4 and turn off the outdoor unit within 2 minutes
after the operation is completed.
Note) The PMV fully open operation by the following operation will return to fully closed after 2 minutes.
1. Set [SW01/SW02/SW03] on the interface board to [2/1/3], and after [H.r] [............... is displayed on the 7-
segment display, press [SW04] and hold for 5 seconds or more.
2. Press [SW06] and hold for 5 seconds or longer, and [P.1] [F o...] Is displayed on the 7-segment display.
(PMV1 fully open)
3. Set [SW01/SW02/SW03] on the interface board to [2/1/4], and after [P.2] [............... is displayed on the 7-
segment display, press [SW04] and hold for 5 seconds or longer, and [P.2][Fo...] Is displayed on the 7-
segment display. (PMV2 fully open)
4. 3. Similarly, set [SW01/SW02/SW03] to [2/1/5], set [SW01/SW02/SW03] to [2/1/6], press [SW04] and hold
for 5 seconds or more, and each have 7 segments.
[P.3][Fo...] (PMV3 fully open), [P.4][Fo...] (PMV4 fully open) are displayed on the display.
Note) 7-segment display and operation method: [P.x] [
• The initial state is normal control, and [............... is displayed in *.
• When push SW4 is pressed for 5 seconds, it fully opens for 2 minutes, and [F o...] is displayed in *.
• Pressing again for 5 seconds displays an intermediate opening for 2 minutes, and [C o...] is
displayed in *.
• Pressing it again for 5 seconds closes it completely for 2 minutes and displays [Fc...] in *.
• Press again for 5 seconds to return to normal control.
(2) Return [SW01/SW02/SW03] on the interface board to [1/1/1].
(3) Be sure to perform vacuuming in from the three check joints shown in the diagram below
(liquid pipe, discharge pipe and suction pipe).
Outdoor Unit (22, 24HP)
Model: MMY-MUP2201*, MMY-MUP2401*
M
Fan motor
PMV1
Left side
TL1
Main heat exchanger
TE1
Left side
PMV2
Sub heat exchanger
TE2
PMV3
TL2
High-pressure
TS3 sensor
SV
SV3D
SV
SV41
(TD1)
Subcool
Heat Exchanger
PMV4
TL3
Gas side
Liquid side
Service valve
Service valve
...]
Fan Fan
M
Fan motor
TO
Right side
Main heat exchanger
TG1
TG2
Right side
TG3
Sub heat exchanger
TE3
Accumulator Alt
SV
High-
High-
pressure
pressure
switch
switch
SV42
TD2
SV3F
TK1)
TK2
Symbol
SV SV
Solenoid Capillary Check Check
Temperature
Strainer
valve tube valve joint
- 264 -
4-way valve
TS1
Low-pressure
sensor
Distributor
sensor