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4. Mini ECO-i Alarm Codes
F07 alarm
Alarm code
Alarm meaning
Alarm conditions
Probable cause
Check
Correction
Example
Notes
F08 alarm
Alarm code
Alarm meaning
Alarm conditions
1
Probable cause
Check
Correction
2
Example
Notes
F12 alarm
3
Alarm code
Alarm meaning
Alarm conditions
Probable cause
4
Check
Correction
Example
5
Notes
6
F07
Liquid temperature sensor (C1) trouble at outdoor heat exchanger
(1) A/D step is 10 steps or less (short circuit).
(2) A/D step is 1014 steps or more (open circuit).
(1) Sensor malfunction (including connector)
(2) PCB malfunction
(1) Measure the sensor resistance. Check that the sensor is operating normally.
(2) Use a remote controller monitor or PC monitor to check the temperature that is recognized by
the microcomputer.
—
—
—
F08
Outdoor air temperature sensor trouble
(1) A/D step is 10 steps or less (short circuit).
(2) A/D step is 1014 steps or more (open circuit)
(1) Sensor malfunction (including connector)
(2) PCB malfunction
(1) Measure the sensor resistance. Check that the sensor is operating normally.
(2) Use a remote controller monitor or PC monitor to check the temperature that is recognized by
the microcomputer.
—
—
—
F12
Compressor intake temperature sensor trouble
(1) A/D step is 10 steps or less (short circuit).
(2) A/D step is 1014 steps or more (open circuit)
(1) Sensor malfunction (including connector)
(2) PCB malfunction
(1) Measure the sensor resistance. Check that the sensor is operating normally.
(2) Use a remote controller monitor or PC monitor to check the temperature that is recognized by
the microcomputer.
—
—
—
—
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Mini ECO-i SYSTEM
Trouble Diagnosis
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