Test Run - Panasonic CU-J50DBE8 Service Manual

9.7.7. Sensor Disconnection Detection Control
• The sensor disconnection detection control activates when the following condition comply:
Sensor
Discharge Temperature
Outdoor Heat Exchanger
• During sensor disconnection, sensor error is displayed; all operations stops except outdoor fan remaining heat removal control.
9.7.8. Valve Error Detection Control
• This control is to protect the compressor.
• Valve error is detected if comply with condition below:
- Power is on for the first time and within 5 minutes from compressor starts (However, the unit is considered power on for first
time when compressor starts operating continuously for 7 minutes).
- Indoor heat exchanger temperature at compressor start -3°C < current heat exchanger temperature for 1 minutes.
• During this error, four-way valve error is displayed; compressor is shutdown.
9.7.9. 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
compressor shutdown.
• During this error, high-pressure switch error is displayed.
9.7.10. Low-pressure Switch Disconnection Error Detection Control
• Low-pressure switch disconnection is detected when low-pressure switch input continuously open for 1 minutes while
compressor 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 ON position and DS2 to OFF position.
• Press Test Run button at outdoor pcb for 1 second.
Detection Threshold
< -4.5°C or 201.8°C
< -50.5°C or 103.7°C
Duration (Sec.)
5
5
44
Detection Condition
Other than compressor start control
and compressor ON
Regularly