IVT 12PHR-N - Page 26

3-2
12PHR-N
Function Operation Self-diagnosis result
display
Description Detection period Reset condition Indoor
unit error
display
Indoor
unit
Outdoor
unit
8
DC overcurrent
error
Compressor stops if DC current
of about 25 A or higher ows in
IPM.
When compressor is
in operation
Operation OFF or ON
Yes
☆
1
Yes Yes
9
AC over current
error
Operating frequency lowers if
outdoor AC current exceeds
peak control current value.
Outdoor stops if compressor
AC current exceeds peak con-
trol current value at minimum
frequency.
When compressor is
in operation
Operation OFF or ON
Yes
☆
1
Yes Yes
10
AC overcurrent
error in
compressor
OFF status
Indoor and outdoor units stop
if outdoor AC current exceeds
about 3 A while compressor is
in non-operation status.
When compressor is
in non-operation
Replacement of
defective parts such as
IPM
Yes
☆
2
Yes Yes
11 AC maximum
current error
Compressor stops if outdoor
AC current exceeds 17 A.
When compressor is
in operation
Operation OFF or ON
Yes
☆
1
Yes Yes
12
AC current
deciency error
Compressor stops if operating
frequency is 50 Hz or higher
and outdoor AC current is
about 2.0 A or lower.
When compressor is
in operation
Operation OFF or ON
Yes
☆
1
Yes Yes
13
Thermistor
installation error
or 4-way valve
error
Compressor stops if high and
low values of temperatures
detected by outdoor unit heat
exchanger thermistor (TH2)
and 2-way valve thermistor
(TH5) does not match
operating cycle.
3 minutes after
compressor startup
Operation OFF or ON
Yes
☆
2
Yes Yes
14
Compressor
high
temperature
error
Compressor stops if
compressor chamber
thermistor (TH1) exceeds
about 114°C, or if there is
short-circuit in TH1.
When in operation Operation OFF or ON
Yes
☆
1
Yes Yes
15
Outdoor unit
heat exchanger
thermistor short-
circuit error
Compressor stops if there is
short-circuit in outdoor unit heat
exchanger thermistor (TH2).
At compressor startup Operation OFF or ON
Yes
☆
1
Yes Yes
16
Outdoor unit
outside air
temperature
thermistor short-
circuit error
Compressor stops if there is
short-circuit in outdoor unit
outside air temperature
thermistor (TH3).
At compressor startup Operation OFF or ON
Yes
☆
1
Yes Yes
17
Outdoor
unit suction
thermistor short-
circuit error
Compressor stops if there is
short-circuit in outdoor unit
suction thermistor (TH4).
At compressor startup Operation OFF or ON
Yes
☆
1
Yes Yes
18
Outdoor unit
2-way valve
thermistor short-
circuit error
Compressor stops if there is
short-circuit in outdoor unit
2-way valve thermistor (TH5).
At compressor startup Operation OFF or ON
Yes
☆
1
Yes Yes
19
Outdoor unit
heat exchanger
thermistor open-
circuit error
Compressor stops if there is
open-circuit in outdoor unit heat
exchanger thermistor (TH2).
At compressor startup Operation OFF or ON
Yes
☆
1
Yes Yes
20
Outdoor
unit suction
thermistor open-
circuit error
Compressor stops if there is
open-circuit in outdoor unit
outside air temperature
thermistor (TH3).
At compressor startup Operation OFF or ON
Yes
☆
1
Yes Yes
21
Outdoor
unit suction
thermistor open-
circuit error
Compressor stops if there is
open-circuit in outdoor unit
suction thermistor (TH4).
At compressor startup Operation OFF or ON
Yes
☆
1
Yes Yes
22
Outdoor unit
2-way
Compressor stops if there is
open-circuit in outdoor unit
2-way valve thermistor (TH5).
At compressor startup Operation OFF or ON
Yes
☆
1
Yes Yes
12PHR-N_S530612PHRN.indd 2 2013/8/7 15:42:14