Auto Commissioning & Management System & Amount of Refrigerant Check Function
8-1-3. Resolving the Problem of "Check Required"
1) Temperature Sensor of Outdoor Unit
Ŷ Things to Check: Outdoor temperature of each outdoor unit, Cond_Out, suction, and liquid line temperature sensor
Ŷ Error Code: None (showing "Check Required" on the result report)
Ŷ Determine the temperature sensor status of each installed outdoor unit before running the compressor.
Ŷ When having a "Check Required" message from the temperature 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 run the Auto Commissioning & Management System one hour after the last stop time of system operation.
No
Waiting for more than one hour.
Does
the difference in between
the temperature sensors of each
outdoor unit to be checked
exceed 10℃?
Are
the temperature
sensors assembled
properly?
Are the temperature
sensor connectors connected
properly?
Are
the resistance values of temperature
sensors shown
to be normal?
Check for any deviation
in the sensors and replace PCB.
Finish
Check and Take Action
* How to Measure Resistance
After separating the temperature sensor c
onnector from PCB, measure the resistance
between two connector terminals.
[Temperature Sensor Resistance]
Check and Take Action
Replace sensor
Is the difference
between the temperature sensors
of each outdoor unit to be checked
below 10℃?
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Temperature
Resistance
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