Sharp AY-XPC07PU, Service Manual

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AY-XPC12PU
3 – 7
DC Over Current Error (6-0 error)
*1
Check the connection of compressor lead wire on IPM PWB.
TU : RED TV : WHITE TW : ORANGE
*2
Refer to "IPM CHECK METHOD".
*3
Check the connection of compressor terminal marking.
Refer to " DISASSEMBLING PROCEDURE OUTDOOR UNIT".
*4
Check to make sure thermistors are installed in correct portions.
Refer to "THERMIST
OR
TEMPERA
TURE CHARACTERISTICS".
Ye
s
No
Ye
s
*1
No
abnormal
normal
abnormal
abnormal
abnormal
abnormal abnormal
*2
abnormal
normal
normal normal
normal normal
normal
*3
Ye
s
abnormal
No
normal
Cooling mode
Heating mode
*4
*4
ST
AR
T
Replace IPM PWB.
Modify compressor terminal marking.
Clean indoor heat exchanger
.
Fix IPM PWB with screws securely
.
Modify or replace termistor
.
Are stop valves
(liquid and gas) close?
Does compressor
rotate?
Check IPM
lead wire.
Check
short circuit.
Check compressor
terminal.
Does compressor rotate?
Does compressor rotate
more than 30 seconds?
Is IPM PWB floating
from the heat sink?
Check the
AC power
supply voltage when
compressor rotate.
(rated voltage±10%)
Cooling mode?
Check indoor heat
exchanger termistor and
discharge thermistor
.
Check outdoor heat
exchanger termistor and
discharge thermistor
.
Check indoor
heat exchanger
.
Check outdoor
heat exchanger
.
6-0 error memory is recorded.
Check the refrigerant amount.
Check the discharge pressure.
Check the installation condition.
Replace control board PWB.
Replace Compressor
.
Fully open stop valves
.
Modify the connection of compressor lead wire on IPM
Connect stable power supply
.
Clean
out
door heat exchanger
.
Modify or replace termistor
.