Sanyo KH2442 / CH2442 Service Manual page 172

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