Our Hotpoint refrigerator has a problem with the water & ice dispenser. The model number is HSM25GFRFSA. The first sign of problems was the 5-month old fridge filter appearing to cause the water flow to go from from just a little slow to really slow very quickly, over a couple days. It quit flowing anything but an initial spurt of water and slow drips after a few days. A new GE filter did not restore the flow.

The water supply to the fridge solenoid valves was checked. It was still high pressure. Also, all hoses between the fridge solenoid valves and the dispenser outlet were checked. They all allowed air to blow freely through them. We had added a heater to the water dispenser supply hose previously, and ice blockage was not found.

The water supply solenoids were checked. There are two solenoids. The water supply solenoid is blue in color, with smaller pins, and a tan terminal connector. The resistance of the solenoid is 330 ohms. The plate on the back of the solenoids indicate that this is a 20W solenoid. The voltage to the solenoid when the water supply lever is depressed is 120 volts, same as house supply. However, the solenoid receives 23 volts as long as the fridge is plugged in!

The Ice Maker supply solenoid is red in color, with larger pins, and a red terminal connector. The resistance of the solenoid is 190 ohms. The plate on the back of the solenoids indicate that this is a 35W solenoid. The voltage to the solenoid when the ice maker rocker switch is on is only 105 volts, less than house supply! The solenoid receives 3.8 volts as long as the ice maker rocker switch is in the off position!

The water dispenser continues to spurt a little water out when the dispenser lever is first depressed, then drips water out slowly. The water supply solenoid was connected directly to 120v house current. The water still just spurted a little stream of water, right after pressing the lever, with slow drips following. To confirm the filter or filter housing was not the problem, the outlet hose was disconnected from the solenoid valve, and only an initial spurt and slow drips resulted.

The ice maker made smaller than normal ice cubes for a few days after the water dispenser quit flowing useful amounts of water. We had a power outage about the time the problems manifested. I suspect a circuit board has been damaged, and is back feeding power to the solenoids at all times, which ruined them. Is there a way to diagnose this board? I don't want to just buy new solenoids, that will be ruined by constant voltage being supplied to them. What is the correct part number for the solenoid valve assembly, and the circuit board? Is there anything else we should check?