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4. Service procedures
1
2
3
4
Section
SM830082
IV - 16
13) Symptom: LCD on the remote controller displays “CHECK P05”. (Negative phase
detection operation warning)
14) Symptom: LCD on the remote controller displays “CHECK E15”.
Yes
No
No
No
Yes
Yes
0345_M_I
Start
Check the power breaker etc.
and repair
No problem
Correct the connection
Replace the outdoor PCB
Is the power supply to the outdoor
unit normal?
(Voltage defective phase?)
Does the outdoor unit operate when
two of the three phases are changed?
(Actuation of negative phase protector)
Is there a contact defect in the
3P connector?
No
Yes
Replace the fuse.
Is the fuse (F1, F2) on the indoor
unit PCB blown?
No
No
No
Yes
Yes
Yes
0646_M_S
Start
Repair the wiring.
Select an indoor unit which matches
with the outdoor capacity.
Check the contact.
Perform the same as “CHECK E04”.
When the group of the units are
installed, is there any mis-cross
between interunit control wiring and
refrigerant tubing?
Are the total capacities of indoor units
to that of outdoor units less than 93%?
Are there no contact failure between
outdoor and indoor units?