Gree GMV-VQ680WM/C-X Service Manual page 322

Gree
4.3.4.1 Mechanical inspection
Step1: Disconnect the power supply switch of the hydro box;
Step2: Check the water flow guiding direction in the top of water flow switch is vertical to the
plate heat exchanger.
Step3: Check if the water flow switch can normally reset after being dialed.
4.3.4.2 Electrical inspection
The water flow switch used by the hydro box is normally open, use a universal meter to adjust
to the diode position, put the red and black probes on the two leads of the water flow switch
respectively, and dial the baffle of the water flow switch to check whether the water flow switch is
normal.
If the universal meter beeps, the water flow switch is normal, otherwise the water flow switch
is abnormal.
GMV6 HR DC Inverter VRF Units Service Manual
320