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6. DC Over Current Error ( 6-0 error)
6-0 error memory is
recorded.
START
Are valves(2-way
and 3-way) close?
No
Does compressor
rotate?
* 1
Check IPM
lead wire.
n
r o
m
l a
Modify the connection of
compressor lead wire on PWB.
* 2
Check
short circuit.
normal
* 3
Check compressor
terminal.
normal
Modify compressor terminal
Replace PWB
Does compressor
rotate?
Replace Compressor
[7] OUTDOOR UNIT CHECK METHOD
After repairing the outdoor unit, conduct the following inspection procedures to make sure that it has been repaired completely. Then, operate the
compressor for a final operation check.
1. Checking procedures
No
I
e t
m
1
Preparation
Yes
Fullyopenstop valves
Does compressor rotate
more than 30 seconds?
Is IPM PWB floating
from the heat sink?
abnormal
Check the AC power
supply voltage when
compressor rotate.
(rated voltage±10%)
abnormal
Replace PWB.
Cooling mode?
abnormal
marking.
*
4
Check indoor
exchanger termistor and
discharge thermistor.
Check indoor
heat exchanger.
Check the refrigerant amount.
Check the discharge pressure.
Check the installation condition.
C
h
e
c
k
m
e
h t
o
d
Disconnect compressor cords (white,
orange, red: 3 wires) from compres-
sor terminals, and connect simulated
load (lamp used as load).
Operate air/air heat pump in cooling
or
heating test operation mode.
* 1
Check the connection of compressor lead wire on 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 "THERMISTOR TEMPERATURE CHARACTERISTICS".
Yes
No
Fix IPM PWB with screws securely.
a
b
n
r o
m
l a
Connect stable power supply.
normal
Yes
No
H
e
t a
n i
g
m
o
d
e
a
b
n
r o
m
l a
n
r o
m
l a
Modify or replace termistor.
a
b
n
r o
m
l a
n
r o
m
l a
Clean indoor heat exchanger.
N
r o
m
l a
v
a
u l
e
c /
3-11
C
o
l o
n i
g
m
o
d
e
*
4
Check outdoor
a
b
exchanger termistor and
discharge thermistor.
n
r o
m
l a
Modify or replace termistor.
a
b
Check outdoor
heat exchanger.
n
r o
m
l a
Clean indoor heat exchanger.
o
n
d
t i
o i
n
R
e
AY-ZP35PR
n
r o
m
l a
n
r o
m
l a
m
e
d
y
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Table of Contents
Troubleshooting
