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9.7.7. Sensor Disconnection Detection Control
• The sensor disconnection detection control activates when the following condition comply:
• During sensor disconnection, sensor error is displayed; all operations stops except outdoor fan remaining heat removal control.
9.7.8. High-pressure Switch Disconnection Error Detection Control
• High-pressure switch disconnection is detected when high-pressure switch input continuously open for 1 minutes while the com-
pressor shutdown.
• During this error, high-pressure switch error is displayed.
9.7.9. Low-pressure Switch Disconnection Error Detection Control
• Low-pressure switch disconnection is detected when low-pressure switch input continuously open for 1 minutes while compres-
sor shutdown.
• During this error, low-pressure switch error is displayed.
9.8. Test Run
• Test run is necessary after installation is completed.
• To enable forced cooling test run, at outdoor PCB, set the DS1 to position below:
• To enable forced heating test run, at outdoor PCB, set the DS1 to position below:
• Press Test Run button at outdoor pcb for 1 second.
Sensor Detection Threshold Duration (Sec.) Detection Condition
Discharge Temperature < -4.5°C or 201.8°C 5 Other than compressor start control
and compressor ON
Outdoor Heat Exchanger < -50.5°C or 103.7°C 5 Regularly
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