Electrical Operation Flow Charts - Mitsubishi PE-10MYC Data Book

ELECTRICAL OPERATION FLOW CHARTS

PE-7,8,10MYC-EU
START
POWER ON
CH ON
30FZ,30CZ ON (SELF HOLD)
SW1 ON?
YES
FZ ON
52F ON
MF1 OPERATE
23WA ON?
YES
CZ1,2 ON
52C ON
MC OPERATE
MF2, 3 OPERATE
CH OFF
SAFETY
DEVICE OFF?
YES
30CZ OFF
52C OFF
MC STOP
MF1 Note
MF2,3 STOP
CH ON
SERVICE CALL
Note.
1. 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.
NO
NO
NO
PEH-5MYA-EU, PEH-7,8,10MYA-EU
START
POWER ON
CH ON
30FZ,30CZ ON (SELF HOLD)
SW2 ON?
YES
FZ ON
52F ON
MF1 OPERATE
SW1 COOL?
YES
23WA ON?
YES
CZ1 ON
52C ON
MC OPERATE
MF2, 3 OPERATE
CH OFF
SAFETY
DEVICE OFF?
YES
30CZ OFF
52C OFF
MC STOP
MF1 Note
MF2,3 STOP
CH ON
SERVICE CALL
- 71 -
NO
NO
NO
NO
NO
NO
NO
HZ1,2 ON
21S4 ON
23WA ON?
YES
CZ1,2 ON
52C ON
MC OPERATE
MF2, 3 OPERATE
CH OFF
CONDENSING
TEMP -12 ?
YES
26D1, 2 ON
X1 ON
X2 ON (SELF HOLD)
21S4 OFF
MF2, 3 STOP
CONDENSING
TEMP 6 ?
YES
26D1, 2 OFF
X1, 2 OFF
21S4 ON
MF2, 3 OPERATE