Check
code
Outdoor
LED display
Check and troubleshooting
(Item without special mention indicates part of outdoor unit.)
[21]
∗
There is a possibility that it is one of the following errors.
Confirm LED on
display
P.C. board
(MCC-1646)
to judge which error it is. (1) high-pressure SW system error,
(2) power supply error (Vdc), (3) high-pressure protective operation, (4) case thermo operation.
Repair defective position.
Is circuit wiring normal?
Is there no fan breakage
or coming-off?
Is service valve fully opened?
Does cooling outdoor fan
normally operate?
B Cooling operation.
B
←
Cooling operation
C
←
Heating operation
Doesn’t high pressure switch
operate?
Are parts of
high pressure switch normal?
Reset the power supply and
then do a trial operation according
to the season.
Is there any element
which blocks heat exchanger
of the outdoor unit?
Clogging of heat exchanger
Short circuit
Parts check
Defective
→
Replace
Elimination of
blocking element
Check IPDU PC board
Defective
→
Replace
Wiring check,
Correct.
Open service valve fully.
Overcharge of refrigerant/
Clogging/Pipe breakage/
Abnormal overload
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
YES
NO
[High pressure SW system error]
High pressure protective operation
.
Connection of connectors,
IPDU, Fan motor, Wiring.
*
{
Are characteristics
of TC and TCJ sensor
resistance value normal?
Are connections of
connectors,capacitors
and fan motor normal?
Heating operation
Does the heating indoor fan
normally operate?
Clogging by refrigerant
overcharge/Pipe breakage/
Abnormal overload
C
Is there any element which
blocks indoor heat exchanger?
Filter clogging
Clogging of heat exchanger
Short circuit
Elimination of
blocking element
Repair
defective position.
Replace
TC or TCJ sensor.
Check indoor P.C. board
Defective
→
Replace
YES
YES
YES
NO
NO
YES
NO
NO
- 9
1
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FILE NO. SVM-15102
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Summary of Contents for RAS-2M14S3AV-E
Page 31: ...4 1 Outdoor Unit 4 CONSTRUCTION VIEWS FILE NO SVM 15102 31 Unit mm ...
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