Self-Diagnosis Action Table - Mitsubishi Electric PUHZ-P200YHA Service Manual
Split-type, heat pump air conditioners
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Also See for PUHZ-P200YHA:
- Service manual (94 pages) ,
- Installation manual (13 pages) ,
- Technical data book (82 pages)
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11-4. SELF-DIAGNOSIS ACTION TABLE
<Abnormalities detected when the power is turned on> (Note 1) Refer to indoor unit section for code P and code E. (P.32, 33)
Abnormal point and detection method
Error Code
None
63H connector open
Abnormal if 63H connector circuit is open
for 3 minutes continuously after power sup-
ply.
F5
63H: High-pressure switch
(5201)
1 No voltage is supplied to terminal
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 (L2 or N phase)
2 Electric power is not supplied to
outdoor controller circuit board.
a) Disconnection of connector
(CNDC)
—
3 Disconnection of reactor
(ACL4)
4 Disconnection of outdoor noise
filter circuit board or parts fail-
ure in outdoor noise filter circuit
board
5 Defective outdoor controller
circuit board
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
Case
1 Check following items.
a) Power supply breaker
b), c) Connection of power supply terminal
block (TB1)
2 Check connection of the connector (CNDC)
on the outdoor controller circuit board.
Check connection of the connector CNDC on
the outdoor noise filter circuit board.
Refer to 11-9.
3 Check connection of reactor. (ACL4)
4 a) Check connection of outdoor noise filter
circuit board.
b) Replace outdoor noise filter circuit board.
Refer to 11-9.
5 Replace controller board (When items above
are checked but the units cannot be repaired).
1 Check connection of 63H connector on
outdoor controller circuit board.
Refer to 11-9.
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.
26
Judgment and action
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Troubleshooting
