Details Of Alarm Messages - Panasonic S-200PE1E8 Technical Data & Service Manual

5-4. Details of Alarm Messages

Alarm Details
(1-1) [Alarm "P29"]
Start of defect diagnosis
Is the power voltage correct?
Yes
Are the wiring connector
connections OK?
Yes
Are the U/V/W
connections on the HIC
PCB and compressor
terminal OK?
Yes
5
Are the capacity setting
for the outdoor unit of
the outdoor unit
Yes
Are the resistance
values permissible at all
areas in HIC PCB?
Yes
(No problem with the resistance value)
Is the insulation on the
compression OK?
(No problem with the insulation)
Yes
Has the HIC PCB been
replaced?
Yes
Has the outdoor unit
control PCB been
replaced?
Yes
Has the fi lter PCB
been replaced?
Yes
Replace the compressor
Start-up failure of the compressor (will not start up)
Related parts
• HIC PCB (Model: [U-200PE1E8, U-250PE1E8] HIC-C906VH8)
• Outdoor unit control PCB (Model: [U-200PE1E8, U-250PE1E8] CR-C906VH8P)
• Filter PCB (Model: [U-200PE1E8, U-250PE1E8] FIL-C906VH8)
No
Improve the power voltage line.
Check the following:
Check to ascertain that the power voltage is within the permissible range of 198 to 264V
for indoor unit or 342 to 456V for outdoor unit regardless of whether the compressor is
operating or not.
* Pay special attention to whether the voltage drops after compressor operations while
measuring.
No
Repair the wiring connectors.
Check the following wiring
HIC PCB
HIC+ CN200 red
HIC- CN201 white
VDCIN+ CN220 red
VDCIN- CN221 red
HIC1(10P white) CN100 white
HIC2 (yellow) CN101 yellow 4P CN81 yellow 4P
HIC3 (8P white) CN102 white
VDC2 (2P) CN240 yellow
No
Repair the wiring connectors.
HIC PCB side
U (CN202) pink
V (CN203) white
W (CN204) blue
No
Correct the capacity setting for the outdoor unit.
As the compressors used with the U-200PE1E8 and U-250PE1E8
are different, there is a possibility that a P29 error will be triggered
if the unit's capacity settings are incorrect.
No (Abnormal resistance value)
Repair the HIC PCB.
• Inspection Method: Remove the HIC PCB and measure the resistance at all areas.
See attached documentation.
Replace the HIC PCB if the readings are below permissible values.
No (Defective insulation)
Repair the compressor.
No
Repair the HIC PCB.
No
Replace the outdoor
unit control PCB.
No
Replace the fi lter PCB.
U-200PE1E8
Outdoor unit con-
Filter PCB
trol PCB
CN317 red CN200 red
CN318 white CN201 white
CN321 red
CN322 white
CN080 white CN100 white
CN101 yellow 3P CN081 yellow 4P
CN103 white CN102 white
CN102 white CN240 yellow
• Potential cause: PCB Insulation failure caused by the
compressor lock.
• Verifi cation Method
Remove the wires from the connectors on the top of the
compressor. Measure the insulation resistance of the U, V and
W phases and confi rm that they are 1M or more.
Potential problems are most likely in accordance with the
following sequence when it is determined that the PCB is
trouble with an alarm P29.
1. HIC PCB
2. Outdoor unit control PCB
3. Filter PCB
Replace the relevant PCB in accordance with the diagnosis
fl ow.
5-8
U-250PE1E8
Outdoor unit con-
HIC PCB Filter PCB
trol PCB
+
CN080 white
CN103 white
CN102 yellow
-