Gree GMV-1015WM/G-U, Руководство по обслуживанию

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Gree GMV6 DC Inverter VRF Units Service Manual
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2.63 "dE" Indoor CO2 Sensor Fault (Reserved)
2.64 “dF” Temperature sensor error
Error display:
hydro box wired controller will display
Applicable mode: all hydro boxes
Error judgment condition and method:
Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge
the range of AD value. If the sampling AD value exceeds upper limit and lower limit in 30 seconds
continuously, report the error
Possible reasons:
■ Poor contact between temperature sensor and terminal in main board interface
■ Temperature sensor is abnormal
■ Detecting circuit is abnormal
Troubleshooting:
Step 1: check the hydro box main board and temperature sensor interface terminal to see if it is loose or any
foreign objects inside? If yes, reconnect it after treatment;
Step 2: check if the temperature sensor is abnormal, if yes, replace the temperature sensor;
Step 3: if the above inspections are normal, the detecting circuit might be abnormal, please replace the main
board.
2.65
“
dJ
”
Water return temperature sensor error
Error display: wired controller of hydro box will display
Applicable model: hydro box
Error judgment condition and method:
Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge
the range of AD value. If the sampling AD value exceeds upper limit and lower limit in 5 seconds
continuously, report the error
Possible reasons:
■ Poor contact between water return temperature sensor and terminal in main board interface
■ Water return temperature sensor is abnormal
■ Detecting circuit is abnormal
Troubleshooting: