Auto Commissioning & Management System & Amount of Refrigerant Check Function
2) Pressure Sensor
Ŷ Things to Check: High/low pressure sensors of stand-alone outdoor unit
Ŷ Error Code: None (showing "Check Required" on the result report)
Ŷ Determine the pressure sensor status of stand-alone outdoor unit before running
the compressor.
Ŷ When having a "Check Required" message from the pressure sensor of outdoor unit, please check in the following order.
[Note]
- When there is a history of outdoor unit operation (including Auto Commissioning & Management System operation),
please try to maintain the vacuum mode for five minutes or more.
No
Check for problematic pressure sensor
Outdoor Unit Vacuum Mode
Are
the pressure sensor connectors
connected properly?
Is the high,
intermediate and low pressure sensor
deviation of outdoor unit
below 2?
Is the voltage of 5v
read between the pins 3 and 4
(pins 2 and 4 in case of intermediate
pressure level) from the PCB
pressure sensor
terminal?
Outdoor Unit Vacuum Mode
Finish
Replace main PCB
Replace pressure sensor
No
No
Yes
Yes
Yes
Check and Take Action
* Check for problematic pressure sensor upon
checking pressure by connecting the saturated pressure of
outdoor temperature or manifold gauge.
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