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Condition for ending prohibition of frequency rising of compressor discharge: if the temperature of
compressor discharge drops below X6
℃
, prohibition of frequency rising of compressor discharge will be
released.
4. Prohibition of frequency for anti-overload of outdoor coiled pipe
Condition for anti-overload prohibition of frequency of outdoor coiled pipe: in the case of anti-overload
frequency decreasing of outdoor coiled pipe, anti-overload prohibition of frequency of the unit begins
when the temperature of outdoor coiled pipe drops below
“the anti-overload frequency decreasing
temperature of outdoor coiled pipe
”.
Actions relates to anti-overload prohibition of frequency of outdoor coiled pipe: the frequency of
compressor maintains at the current level, which may decrease as the case requires while cannot rise.
The indoor and outdoor fans run.
Condition for ending anti-overload prohibition of frequency of outdoor coiled pipe: if the temperature of
outdoor coiled pipe drops below
“temperature to release the anti-overload state of outdoor coiled pipe”,
anti-overload prohibition of frequency of outdoor coiled pipe will be released.
7-4. Trouble Diagnosis of Compressor
Judging the connecting terminals of inverter compressor:
It is impossible to identify terminals U, V and W of inverter compressor with multi-meter. Just connect
the terminals in the same way as the original unit when replacing the compressor. A wrong connection will
lead to reverse and loud noise of the compressor.
Resistance of compressor coil:
Measure the resistance between any two terminals, which are about a few Ohms, three phases
having the same resistance.
7-5. Trouble Diagnosis of Electric Filter Board
Visual examination: as the circuit is simple, the connection may be checked visually to see whether
any loose or poor connection.
Voltage test: the voltage at the input end shall be the same as the voltage at the output end.
7-6. Trouble Diagnosis of Electric Communication
Step one: to determine whether the connecting cables and tether cables of indoor/outdoor units are
correctly wired. If not, change wiring order and test connection.
Step two: to determine whether there is loose connection.
Fasten the connection in the case of loose connection and then conduct verification.
Step three: measure the voltage between SI and N with multi-meter and see whether the voltage
fluctuates between 0V and 24V. Please directly replace indoor and outdoor control boards if there are not
voltage fluctuations.
Summary of Contents for AS-10UR4SYDTDI
Page 6: ...6 Gross Weight Kg Indoor Unit 9 5 Outdoor Unit 24...
Page 9: ...9 Gross Weight Kg Indoor Unit 9 5 Outdoor Unit 25...
Page 21: ...21...
Page 22: ...22 Outdoor Model...
