PRESSURE SWITCHES

The washer uses two pressure switches to control the amount of water entering the tub and to protect against an overfill condition. The operating pressure switch, marked OPR, controls the amount of water that enters the tub during normal wash and rinse functions. This switch operates in the same manner as similar pressure switches through a pressure switch tube, diaphragm and switch. The switch contact is normally closed and will open on pressure rise.

The overfill pressure switch, marked FLD, is used to guard against failure of the operating pressure switch or an overfill condition caused by the consumer adding water to the basket. The overfill pres- sure switch operates in the same manner as the operating pressure switch, except it’s trip setting is slightly higher than the operating pressure switch. The switch contact is normally closed and will open on pressure rise. These pressure switches are NOT interchangeable.

If an overfill condition is detected, the overfill switch will signal the electronic control which causes it to discontinue the current cycle. “FL” will flash on the control panel display and the beeper will repeat a warning every 10 seconds. The pump is cycled in drain mode for a half minute on, half minute off until the overfill switch is reset or power is disconnected from the washer. If the flood switch does reset, the washer will remain in standby mode with “FL” displayed. It will not automatically restart the cycle.

OPR FLD

Fig. 2-11

LOG VALVE ASSEMBLY

The log valve assembly consists of an inlet valve with hot and cold water valves and solenoids for incoming water supply and four (4) outlet valves for the water to exit the valve body. The outlets drive the dispensers under the washer top and allow for fresh water fill. Also included in the log valve assembly, is the thermistor which is used to monitor incoming water temperature.

Detergent Dispenser Outlet Valve

Hot Water Inlet Valve

Bleach Dispenser Outlet Valve

Cold Water Inlet Valve

Fresh Water Outlet Valve

Thermistor

 

Fabric Softener Dispenser Outlet Valve

Fig. 2-12

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Whirlpool GVW9959K-0 manual Opr Fld, Pressure Switches, LOG Valve Assembly