Mitsubishi 20-MYA Specifications Page 65

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ELECTRICAL OPERATION FLOW CHARTS
START
POWER ON
52C ON
MC OPERATE
MF2, 3
OPERATE
SERVICE CALL
LCD controller
COMP ON?
SAFETY
DEVICE OFF?
NO
YES
YES
30FZ,30CZ ON (SELF HOLD)
FZ ON
YES
52F ON
MF1 OPERATE
NO
NO
30CZ OFF
CH ON
LCD controller
ON?
CZ1,2 ON
CH OFF
52C OFF
MC STOP
MF2,3 STOP
MF1 Note
CH ON
START
POWER ON
52C ON
MC OPERATE
MF2, 3
OPERATE
HZ1,2 ON
LCD controller
COMP ON?
SAFETY
DEVICE OFF?
LCD controller
COMP ON?
NO
YES
NO
YES
YES
YES
NO
30FZ,30CZ ON (SELF HOLD)
FZ ON
YES
52F ON
MF1 OPERATE
NO
NO
30CZ OFF
CH ON
CZ1 ON
CH OFF
21S4 ON
CZ1,2 ON
52C ON
MC OPERATE
MF2, 3
OPERATE
SERVICE CALL
52C OFF
MC STOP
MF2,3 STOP
MF1 Note
CH ON
Note.
CH OFF
X2 OFF
21S4 OFF
T1 OFF
MF2, 3 STOP
26D ON ?
T2 ON
X1 ON (SELF HOLD)
X1 OFF
T2 OFF
PASS THE 30 MIN ?
(T1)
PASS THE 15 MIN ?
(T2)
21S4 T1 ON
MF2, 3 OPERATE
YES
YES
YES
YES
NO
NO
NO
NO
X2 ON
When the fault of outdoor unit is
occurred, the fan(MF1) of indoor
unit continues to work.
But the unit doesn't work correctly
(not cooling and heating ).
Then, turn off the power supply
and check outdoor unit.
1.
Condensing
temp.
-4±1.5
˚C
26D OFF?
Condensing
temp.
26±1.5
˚C
High
pressure
2.16MPa
or
63H2 OFF?
LCD controller
ON?
COOL MODE?
PE-7,8,10MYC-EU PEH-5MYA-EU, PEH-7,8,10MYA-EU
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