- 136 -
Checking code
Meaning, detecting method
Cause
Checking method & Countermeasure
5201
(1) Pressure sensor trouble.
(2) Inner pressure drop due to
a leakage.
(3) Broken cover.
(4) Coming off of pin at
connector portion, poor
contact.
(5) Broken wire.
(6) Faulty thermistor input circuit
of MAIN board.
(1) Pressure sensor trouble.
(2) Inner pressure drop due to
a leakage.
(3) Broken cover.
(4) Coming off of pin at
connector portion, poor
contact.
(5) Broken wire.
(6) Faulty thermistor input circuit
of MAIN board.
See
Troubleshooting of
pressure sensor.
See
Troubleshooting of
pressure sensor.
1. When pressue sensor detects
0.098MPa or less during
operation, outdoor unit once
stops with 3 minutes
restarting mode, and restarts
if the detected pressure of
pressure sensor ex-ceeds
0.098MPa imediately before
restarting.
2. If the detected pressure of
sensor is less than 0.098MPa
immediately before restarting,
error stop is commenced
displaying 5201.
3. Under 3 minutes restarting
mode, LED displays
intermittent fault check.
4. During 3 minutes after
compressor start, defrosting
and 3 minutes after defrosting
operations, trouble detection
is ignored.
High pressure
sensor
abnormality
(outdoor unit)
5301
5305
5201
5203
(1) Contact is faulty.
(2) ACCT sensor is faulty.
(1) Contact is faulty.
(2) DCCT sensor incorrectly
installed.
(3) DCCT sensor is faulty.
(4) INV board fault.
(1) INV board fault.
(2) Compressor ground fault
and IPM fault.
Check the INV board CNCT2
(ACCT) contact, CNDR2 and
G/A Board CNDR1.
Replace the ACCT sensor
Check the connector connection
on the INV board CNCT (DCCT),
DCCT side.
Check DCCT installation
direction
Replace the DCCT sensor
Replace the INV board
Refer to
9
.[4].7.(2).[1]
“Check the INV board error
detection circuit”
Refer to
9
.[4].7.(2).[2]
“Check for com-pressor ground
fault or coil error.”
Refer to
9
.[4].7.(2).[5]
“Check the inverter circuit trouble”.
-1.5Arms output current's
effective value 1.5Arms was
detected during inverter
operation.
An abnormal value is detected
in the DCCT detection circuit
just before the INV started.
An abnormal value was
detected with the ACCT
detection circuit just before the
INV started.
When pressure sensor detects
4.06MPa or more, error code
“5201” or “5203” is displayed.
However, error stop is not made,
and backup operation will starts.
ACCT sensor
abnormality
(Error details
No.115)
DCCT sensor
abnormality
(Error details
No.118)
✻
Other than
P200 model
ACCT
sensor/circuit
abnormality
(Error details
No.117)
✻
For the check code on the inverter, refer to
“
7. Inverter and compressor
”
in the section [4]
“
Troubleshooting of principal parts
”
Pressure sensor abnor
mality (BC controller)
Liquid
side
Inter-
mediate
