Troubleshooting - Outdoor Unit Related; The Unit Runs But Doesn't Cool (Heat) The Room - Daikin FTX25JVEA9 Service Manual

Troubleshooting - Outdoor Unit Related

3. Troubleshooting - Outdoor Unit Related

3.1

The Unit Runs but Doesn't Cool (Heat) the Room

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Supposed
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Causes
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Troubleshooting
Check No.1
Refer to P.300
Check No.9
Refer to P.306
260
Incorrect temperature setting
Unconnectable models
Clogged air filter
Improper load for the capacity
Excessively long refrigerant pipe
Faulty installation of indoor unit / outdoor unit
Clogged refrigerant circuit, etc.
Gas shortage
Stop valve closed
EVn malfunction
EVH malfunction
EVP malfunction
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Is the
temperature set
correctly?
YES
Are the
types of indoor and
outdoor units correctly
selected to
connect?
YES
Is the air filter clogged?
NO
Is the load suitable
for the capacity?
YES
Is the
refrigerant piping too
long?
NO
Are the
indoor and outdoor
units installed
normally?
YES
Check No.9
Refrigerant system
check
Normal
Does gas leak?
NO
1
To next page
NO
While thermostat is OFF.
NO
Check through the
compatibility table
YES
NO
YES
Check No.1
installation condition check.
There is some faulty point.
YES
Check gas for leaking.
Set the temperature at the
desired again.
Connect the correct types
of units.
Clean.
Replace by suitable model
or install additional unit.
Make it within the specified
length.
NO
Refer to the contents of
Checking installation
status.
Refer to the contents of
Refrigerant system check
Perform the same remedy
as that when lack of gas is
detected.
Service Diagnosis
Si18-201
(MF018)