63
1302
When the sensor detects 2.94MPa or more
again (2nd detection) within 30 minutes
since the compressor has stopped, the
compressor stops again and restarts
operation in 3 minutes.
5) Indoor fan motor lock
Check the indoor fan motor.
When the sensor detects 2.94MPa or more
again (4th detection) within 30 minutes
after 3rd compressor stop, it stops
abnormally. In this time <1302> is displayed.
6) Indoor fan motor failure
Check the indoor fan motor.
When the sensor detects 2.94MPa or more
after 30 minutes since the compressor has
stopped (1st or 2nd or 3rd time), it
becomes the 1st detection or the same
performance as above-mentioned
1
.
7) 4-way valve performance failure
(Stop in the middle of performance)
Change COOL/HEAT operation mode
to perform the 4-way valve. If any
defective, replace the 4-way valve.
It is being delay for abnormal stop during
30 minutes since the compressor has
stopped. In this time, check delay code
<1402> will be displayed.
8) Ball valve performance failure (not
full-opened)
Check the ball valve full-opened.
9) Pipe clogged or broken
10) Indoor linear expansion valve
performance failure
Repair the defective points.
11) Outdoor fan motor lock
Operate COOL or HEAT operation,
and check the operation condition.
Note) For first 7 minutes in COOL or HEAT
starting, error detected pressure of high-
pressure pressure sensor is 3.14MPa.
12) Outdoor fan motor failure
13) Outdoor unit short cycle
Check the outdoor unit fan motor.
14) Outdoor heat exchanger dirt
15) Decrease in airflow capacity which
the outdoor unit intakes because of
intake defective of outer temperature
thermistor. (Intake less than the actual
outer air)
Check the outdoor unit fan motor.
16) Indoor unit capacity codes miss
setting (If the capacity code is set
greatly, initial frequency rises and high-
pressure is easy to rise.)
Check the outdoor unit.
17) Solenoid valve (SV1) performance
failure (High-pressure pressure cannot
be controlled by SV1)
Check the outdoor unit heat
exchanger.
18) Indoor thermistor (liquid pipe
temperature detection) detecting failure
(thermistor removed) (Hot adjust time
becomes long.)
Check intake temperature of the outer
temperature thermistor by LD1.
19) High-pressure pressure sensor
defective
(See 5106 Outer temperature
thermistor error)
20) High-pressure pressure sensor
input circuit defective in multi controller
board.
Check the capacity set switch in the
indoor controller board. If it is wrong
setting reset it. Check is available for
the outdoor unit.
(See 7101 Capacity code error)
Check the solenoid valve
performance.
Check the thermistor installed
condition. Operate in trial mode and
check the pipe temperature change
by the remote controller.
Check the high-pressure pressure
sensor.
Check the high-pressure pressure
sensor.
1500
Refrigerant over charged abnormality
1) Refrigerant over charged
Check the refrigerant amount.
When below 5 conditions are satisfied
during the compressor operation (1st
detection), the compressor stops and
restarts operation in 3 minutes.
2) Light-loaded operation (Wrong
determination)
Check the indoor/outdoor unit
operating condition and status.
1. Cool mode, outer temp. is 20
;
or more
3) Performance defective of the
indoor's linear expansion valve and
outdoor's electronic expansion valve.
Perform cool or heat operation to
check the condition.
Heat mode, outer temp. is 15
;
or less
1
2
When the sensor detects 2.94MPa or more
again (3rd detection) within 30 minutes
since the compressor has stopped, the
compressor stops again and restarts
operation in 3 minutes.
3
4
5
6
Display
Meaning and detecting method
Causes
Check points
OC183E--3.qxp 10.5.6 3:05 PM Page 63
