Gree GMVVQ1015WM/C-X, Руководство по обслуживанию

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Gree GMV6 HR DC Inverter VRF Units Service Manual
132
2) After the water pump has operating for 30min, report alarm if detecting that water inlet temperature of
generator is higher than water outlet temperature in 10 consecutive minutes.
Possible reasons:
■
Poor contact between floor heating outlet water pipe temperature sensor and terminal in main board interface
■
Floor heating outlet water pipe temperature sensor falls off or is abnormal
■
The circulating water in generator is not drained completely
■
Detecting circuit is abnormal
Troubleshooting:
Step 1: Is the terminal between main board of hydro box and temperature sensor loose or any foreign objects
inside? If yes, retighten it after treatment;
Step 2: Is the temperature sensor loose or any foreign objects inside? If yes, retighten it or replace the
temperature sensor;
Step 3: If air exist in the circulated waterway of hydro box, if yes, drain it again;
Step 4: If the above tests are normal, then the detecting circuit might be abnormal, please replace the main
board.
2.68 "db" Engineering Commissioning
Fault display: main board of outdoor unit, wired controller of indoor unit and receiver of indoor unit
display
Fault diagnosis:
This is a status code but not a fault code. It indicates that the unit is being commissioned and the
indoor unit is not operational.
Possible causes: --
Troubleshooting: --
2.69 “dd” Solar energy temperature sensor error
Error display: wired controller of hydro box will display
Applicable model: hydro box which the solar energy at function DIP code of the main board is set as
“connect”
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 temperature sensor and terminal in main board interface
■
Temperature sensor is abnormal
■
Detecting circuit is abnormal
Troubleshooting: