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Mitsubishi Electric PURY-P200 Service Handbook page 171

City multi r410a
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Refrigerant circuit figure (P450-P650types)
Check valve block 2
Solenoid valve block 1
SV4d
SV4b
SV4a
SV4c
TH7
HEXb1
HEXf3
TH6
HEXf2
CV7a
HEXf1
6
7
8
9
5
0
Drier
ST15
ST16
ST14
ST17
CV5a
CV9a
CV10a
CV4a
CV8a
CV6a
Check valve block 1
Orifice
Refrigerant flow in the case
of cooling
A
C
D
B
Check valve block2 (only P450-P650types)
4. Outdoor unit fan
• To check the revolution of the fan, check the inverter output state on the LED screen, as the inverter on the out-
door fan controls the revolutions of the fan. The revolution of the fan is approximately 600rpm at full speed.
• When starting the fan, the fan runs at full speed for 5 seconds.
• For the 2 fans for P450-P650 types, the fan on the right (as you face the fan) runs at all times and the fan on the
left runs when required. (When heating except for defrost, both fans run.)
• When setting the DIP SW1 to
speed and 0% indicates the stop.
• As the revolution of the fan changes under control, at the interphase or when the indoor unit operation capacity is
low, the revolution of the fan may change.
• When the fan does not work or an abnormal vibration occurs, the FAN board is defective, or the fan motor runs
under open phase or opposite phase. (The microcomputer detects the open phase or the opposite phase of the
main power source, however, these malfunctions may occur when doing other service work or when the lead wire
for the fan motor is intentionally replaced.)
• When the only one fan is running and the other fans are stopped, check the 52F output state on the LED screen
first and check the fan connector and 52F connector misconnection, 52F failure, or the lead wire disconnection.
SV5a
CV7b
SV5b
HEXb2 HEXf4
ST19
ST18
F G
E
C
A
CV5b
CV4b
D
CV2b
3
1
CV6b
B
Check valve block 2
CV3a
4
CV2a
2
Refrigerant flow in the case
A
C
E
F
G
D
Check valve block2 (only P450-P650types)
1 2 3 4 5
6
7 8 9 10
ON
- 168 -
Hex wrench
BV1
ST1
BV2
TH5
of heating
E
G
E
B
High-pressure (gas)
High-pressure (liquid)
Low-pressure (gas/liquid)
, the inverter output [%] will appear. 100% indicates the full
Check valve block 1
Gasket
Gasket
Valve plug
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