–130–
Checking code
Meaning, detecting method
Cause
Checking method & Countermeasure
4260
5101
5102
5103
5104
5105
5106
5107
5108
5109
5110
5112
5111
Cooling fan
abnormality
Ther
mal sensor abnor
mality (BC controlled)
If the heat sink temperature (THHS)
100
°
C for 20 minutes or longer just
before the inverter starts.
<Other than THHS>
1
A short in the thermistor or an
open circuit was sensed. The
outdoor unit switches to the
temporary stop mode with re-
starting after 3 minutes, then if
the temperature detected by the
thermistor just before restarting
is in the normal range, restart-
ing takes place.
2
If a short or open circuit in the
thermistor is detected just be-
fore restar ting, error code
“5101”, “5102”, “5103”, “5104”,
“5105”, “5106”, “5108”, “5109”
or “5112” is displayed.
3
In the 3 minute restart mode,
the abnormal stop delay LED is
displayed.
4
The above short or open circuit
is not detected for 10 minutes
after the compressor starts, or
for 3 minutes during defrosting
or after recovery following de-
frosting.
<THHS>
If a heat sink (THHS) temperature
of -40
°
C is detected just after the
inverter starts or during inverter
operation.
* TH2, TH9, TH10 : P-YMF-B only
1. When short (high temp. inlet) or
open (low temperature inlet) of
thermistor is detected during
operation, error stop will be
commenced displaying “5111”
or “5112”, “5113” or “5114”, or
“5115” or “5116.
2. The above detectection is not
made during defrostig and 3-
minute after changing operation
mode.
Discharge
(TH1)
Low
pressure
saturation
(TH2)
Detected switch
liquid level
(LD1)
Detected switch
liquid level
(LD2)
Heat
exchanger
inlet pipe
(TH5)
Ambient
tempera-
ture (TH6)
Heat
exchanger
outlet pipe
(TH7)
SC coil
bypass
outlet
(TH8)
CS circuit
(TH9)
Radiator
panel
(TH HS)
Compres-
sor shell
tempera-
ture
(TH10)
Liquid inlet
(TH11)
Bypass
outlet
(TH12)
Bypass
inlet
(TH15)
Intermedi-
ate section
(TH16)
Ther
mal sensor abnor
mality (Outdoor Unit)
Same as “4230.”
Check the thermistor’s resistance.
Check if the lead wires are pinched.
Check for tearing of the insulation.
Check if a pin is missing on the con-
nector.
Check if a wire is disconnected.
Check the temperature picked up by
the sensor using the LED monitor.
If the deviation from the actual tem-
perature is great, replace the MAIN cir-
cuit board.
(In the case of the THHS, replace the
INV board.)
Check thermistor resistance.
Check lead wire biting.
Check broken cover.
Check coming off of pin at connector.
Check broken wire.
Check sensor sensing temperature. If
it deviates from the actual temerature
seriously, replace control panel.
1) Same as “4230.”
1) Thermistor
2) Lead wires are being pinched.
3) Insulation is torn.
4) A connector pin is missing, or there
is faulty contact.
5) A wire is disconnected.
6) The thermistor input circuit on the
MAIN circuit board is faulty.
(In the case of the THHS, replace
the INV board.)
1) Thermistor trouble.
2) Biting of lead wire.
3) Broken cover.
4) Coming off of pin at connector por-
tion, poor contact.
5) Broken wire.
6) Faulty thermistor input circuit of
control board.
Short Circuit Detection
Open Circuit Detection
TH1
240
°
C or higher (0.57 k
Ω
)
15
°
C or lower (321 k
Ω
)
TH2
70
°
C or higher (1.71 k
Ω
)
-40
°
C or lower (130 k
Ω
)
LD1
–
-40
°
C or lower (130 k
Ω
)
LD2
–
-40
°
C or lower (130 k
Ω
)
TH5
110
°
C or higher (0.4 k
Ω
)
-40
°
C or lower (130 k
Ω
)
TH6
110
°
C or higher (0.4 k
Ω
)
-40
°
C or lower (130 k
Ω
)
TH7
110
°
C or higher (1.14 k
Ω
)
-40
°
C or lower (130 k
Ω
)
TH8
70˚C or higher (1.14 k
Ω
)
-40
°
C or lower (130 k
Ω
)
TH9
70
°
C or higher (1.14 k
Ω
)
-40
°
C or lower (130 k
Ω
)
THHS
–
-40
°
C or lower (2.5 M
Ω
)
TH10
240
°
C or higher (0.57 k
Ω
)
-15
°
C or lower (1656 k
Ω
)
Short Detected
Open Detected
TH11
110
°
C or more (0.4 k
Ω
)
-40
°
C or less (130 k
Ω
)
TH12
110
°
C or more (0.4 k
Ω
)
-40
°
C or less (130 k
Ω
)
TH15
70
°
C or more (1.14 k
Ω
)
-40
°
C or less (130 k
Ω
)
TH16
70
°
C or more (0.4 k
Ω
)
-40
°
C or less (130 k
Ω
)
