Auto Commissioning & Management System & Amount of Refrigerant Check Function
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5) Main EEV
■ Things to Check: Main EEV of outdoor unit. (only when the operating mode of automated test operation is set to "heating")
■ Error Code: None (showing "Check Required" on the result report).
■ Determine the main EEV operation status of each outdoor unit.
■ When needing to check the main EEV of outdoor unit, please check in the following order.
Is the main EEV connector
connected properly?
Is the main EEV coil normal?
(Resistance, disconnection,
disabled, etc.)
Is the output signal of PCB normal?
Check valve and pressure sensor
Check and Take Action
Replace coil
Replace main PCB
Replace main EEV
Finish
Upon running
the Auto Commissioning & Management
System, are the valve and pressure
sensor normal?
* Standard Resistance Values of Main EEV Coil (Measured at 20℃)
Operating
Voltage
(VDC)
Phase-to-phase
resistance
(Ω)
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