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10.3.2.7 Current protection of compressor (ODU P3)
Current protection of compressor
Judge 1: Check whether the
input current of the power
supply wire is higher than max
protection current value
Yes
Replace the electric control box
Check whether
the refrigerant
system is ok
Judge 2: Check whether the
outdoor ambient
temperature is higher than
50
℃
No
Stop the unit
Yes
Judge 3: Check whether the
outdoor unit is bad ventilation
No
Make the outdoor unit ventilate well
Yes
Judge 5: The refrigerant
pipe is blocked
No
Let the refrigerant out, then use the high
pressure nitrogen or refrigerant to blow pipe,
vacuumize and charge the refrigerant again
Yes
Judge 4: Check whether the
heat exchanger is dirty
No
Clean the heat exchanger
Yes
Yes
Replace outdoor main
board,and check whether
the system can run normally
No
Yes
Trouble is solved
Model
M2OD-16H
FN1-Q
M2OD-18HFN1
-Q(W190)
M2OD-18H
FN1-Q
M2OD-14H
FN1-Q
M3OD-21H
FN1-Q
M3OD-26H
FN1-Q
M3OD-27H
FN1-Q
M4OD-28H
FN1-Q
M4OA-36H
FN1-Q
M5OC-36H
FN1-Q
M5OD-42H
FN1-Q
Max
prote
ction
curre
nt
11A
14A
15A
14A
15A
15A
18.5A
18A
23A
23A
25A
Содержание M2OD-14HFN1-Q
Страница 12: ...4 Wiring Diagram M2OD 14HFN1 Q M2OD 18HFN1 Q...
Страница 13: ...M2OD 16HFN1 Q M2OD 18HFN1 Q W190...
Страница 14: ...M3OD 27HFN1 Q M3OD 21HFN1 Q M3OD 26HFN1 Q M4OD 28HFN1 Q M4OA 36HFN1 Q...
Страница 15: ...M5OC 36HFN1 Q M5OD 42HFN1 Q...