AYXP12JHRN
3 – 2
9 AC overcurrent
error
Operating frequency lowers if out-
door AC current exceeds peak
control current value. outdoor
stops if compressor AC current
exceeds peak control current
value at minimum frequency.
When compressor is
in operation
Operation OFF or ON Yes ✩1Yes 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 ✩2Yes Yes
11 AC maximum cur-
rent error
Compressor stops if coutdoor AC
current exceeds 17 A.
When compressor is
in operation
Operation OFF or ON Yes ✩1Yes Yes
12 AC current defi-
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 ✩1Yes Yes
13 Thermistor installa-
tion 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) do not match
operating cycle.
3 minutes after com-
pressor startup
Operation OFF or ON Yes ✩1Yes 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 ✩1Yes Yes
15 Outdoor unit heat
exchanger ther-
mistor short-circuit
error
Compressor stops if there is
short-circuit in outdoor unit heat
exchanger thermistor (TH2).
At compressor star-
tup
Operation OFF or ON Yes ✩1Yes Yes
16 Outdoor unit outside
air temperature
thermistor short-cir-
cuit error
Compressor stops if there is
short-circuit in outdoor unit out-
side air temperature thermistor
(TH3).
At compressor star-
tup
Operation OFF or ON Yes ✩1Yes Yes
17 Outdoor unit suction
thermistor short-cir-
cuit error
Compressor stops if there is
short-circuit in outdoor unit suc-
tion thermistor (TH4).
At compressor star-
tup
Operation OFF or ON Yes ✩1Yes 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 star-
tup
Operation OFF or ON Yes ✩1Yes Yes
19 Outdoor unit heat
exchanger ther-
mistor open-circuit
error
Compressor stops if there is
open-circuit in outdoor unit heat
exchanger thermistor (TH2).
At compressor star-
tup
Operation OFF or ON Yes ✩1Yes Yes
20 Outdoor unit outside
air temperature
thermistor open-cir-
cuit error
Compressor stops if there is
open-circuit in outdoor unit out-
side air temperature thermistor
(TH3).
At compressor star-
tup
Operation OFF or ON Yes ✩1Yes Yes
21 Outdoor unit suction
thermistor open-cir-
cuit error
Compressor stops if there is
open-circuit in outdoor unit suc-
tion thermistor (TH4).
At compressor star-
tup
Operation OFF or ON Yes ✩1Yes Yes
22 Outdoor unit 2-way
valve thermistor
open-circuit error
Compressor stops if there is
open-circuit in outdoor unit 2-way
valve thermistor (TH5).
At compressor star-
tup
Operation OFF or ON Yes ✩1Yes Yes
23 Outdoor unit dis-
charge thermistor
open-circuit error
Compressor stops if there is
open-circuit in outdoor unit dis-
charge thermistor (TH1).
At compressor star-
tup
Operation OFF or ON Yes ✩1Yes Yes
24 Serial signal error Compressor stops if outdoor unit
cannot receive serial signal from
indoor unit for 30 seconds.
When in operation Reset after reception
of serial signal
None None None
25 Compressor star-
tup error
Compressor stops if compressor
fails to start up.
At compressor star-
tup
Operation OFF or ON Yes ✩3Yes Yes
Function Operation Self-diagnosis
result display
Description Detection period Reset condition Indoor
unit
error
display
Indoor
unit
Outdoor
unit
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