Mitsubishi Electric WSH-ZM35I BEDRAAD SET, Руководство по обслуживанию

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27
OCH751
10-3. SELF-DIAGNOSIS ACTION TABLE
<Abnormalities detected when the power is put on>
Note: Refer to indoor unit section for code P and code E.
Checkcode Abnormal points and detection method Cause judgment and action
None —
1
No voltage is supplied to termi-
nal block (TB1) of outdoor unit.
a) Power supply breaker is
turned off.
b) Contact failure or disconnec-
tion of power supply terminal
c) Open phase (L or N phase)
2
Electric power is not supplied
to power supply terminal of out -
door conroller circuit board.
a) Contact failure of power sup -
ply terminal
b) Open phase on the outdoor
conroller circuit board
(Disconnection of terminal
on outdoor conroller circuit
board)
3
Disconnection of reactor (ACL)
4
Defective outdoor controller cir-
cuit board
1
Check following items.
a) Power supply breaker
b) Connection of power supply terminal block
(TB1)
c) Connection of power supply terminal block
(TB1)
2
Check following items.
a) Connection of power supply terminal block
(TB1)
b) Connection of terminal on outdoor conroller
circuit board
3
Check connection of reactor. (ACL)
Refer to "7. WIRING DIAGRAM".
4
Replace outdoor controller circuit board.
(When items above are checked but the units
cannot be repaired.)
F5
(5201)
63H connector open
Abnormal if 63H connector circuit is open
for 3 minutes continuously after power sup -
ply.
63H: High pressure switch
1
Disconnection or contact failure
of 63H connector on outdoor
controller circuit board
2
Disconnection or contact failure
of 63H
3
63H is working due to defective
parts.
4
Defective outdoor controller
circuit board
1
Check connection of 63H connector on
outdoor controller circuit board.
Refer to "10-8. TEST POINT DIAGRAM".
2
Check the 63H side of connecting wire.
3
Check continuity by tester.
Replace the parts if the parts are defective.
4
Replace outdoor controller circuit board.