AE-X15PU
3 – 2
11 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 I1 Yes Yes
12 Compressor high
temperature error
Compressor stops if compressor
chamber thermistor (TH1)
exceeds about 114℃
, or if there
is short-circuit in TH1.
When in operation Operation OFF or ON YesI1 Yes Yes
13 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 I1 Yes Yes
14 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
Opera
tion OFF or ON YesI1 Yes Yes
15 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 I1 Yes Yes
16 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 I1 Yes Yes
17 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 I1 Yes Yes
18 Outdoor unit outside
air temperature
thermistor open-cir-
cuit
error
Compressor stops if there is
open-circuit in outdoor unit out-
side air temperature thermist
or
(TH3).
At compressor star-
tup
Operation OFF or ON Yes I1 Yes Yes
19 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 I1 Yes Yes
20 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 I1 Yes Yes
21 Outdoor unit dis-
charge thermistor
open-circuit error
Compressor stops if there is
open-circuit in outdoor unit dis-
charge thermistor (TH1).
At comp
ressor star-
tup
Operation OFF or ON YesI1 Yes Yes
22 Serial signal error Power relay turns OFF if indoor
unit cannot receive serial signal
from outdoor unit for
8 minutes.
When in operation Operation OFF or ON
(Automatic reset
when less than 8 min-
utes)
Yes None
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
23 Compressor star-
tup error
Compressor stops if compressor
fails to start up.
At compressor star-
tup
Operation OFF or ON Yes I3 Yes Yes
24 Compressor rota-
tion error (at 120°
energizing)
Compressor stops if there is no
input of position detection signal
from compressor or input is
abnormal.
Compressor operat-
ing at 120° energizing
Operation OFF or ON Yes I3 Yes Yes
25 Outdoor unit DC fan
error
Operation stops if there is no
input of rotation pulse signal from
outdoor unit fan motor for 30 sec-
onds.
When outdoor unit
fan is in operation
Operation OFF or ON Yes I1 Ye
s Yes
26 PAM over voltage
error
Compressor stops if DC voltage is
350 V or higher.
When in operation Operation OFF or ON Yes I1 Yes Yes
sisongaid-fleSnoitarepOnoitcnu
F
result display
Description Detection period Reset condition Indoor
unit
error
display
Indoor
unit
Outdoor
unit
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