1. Overdue or clogged water filter (#1 cause of slow water dispense)
What it is: Filter past 6 months chokes flow to a trickle. Aftermarket filters seat poorly and restrict even worse. Symptom: slow water but ice keeps making (ice circuit bypasses the filter on most models).
Fix: Install fresh OEM filter, reset filter timer, flush 2 gallons before tasting.
Typical all-in: $95–$165 with service call
2. Frozen water line in the door (Whirlpool, KitchenAid, Maytag)
What it is: The supply line that runs from the hinge up to the dispenser freezes solid when fridge temp drops below 36°F or when the dispenser sits unused for weeks. Symptom: no water, slight humming from inlet valve.
Fix: Thaw the door line with warm towels (45 min), raise fridge setting to 37–38°F, replace cracked tubing if split.
Typical all-in: $215–$305 all-in
3. Failed water inlet valve
What it is: The dual-coil solenoid valve at the back of the cabinet that opens for both ice fill and water dispense. After 5–9 years a coil burns open. Symptom: no water AND no ice, faint buzzing under the fridge.
Fix: Pressure-test line (>20 psi), meter coils (200–500 Ω), replace OEM dual-coil inlet valve.
Typical all-in: $245–$365 all-in
4. Frozen ice chute / clumped ice in the bucket (#1 ice-side cause)
What it is: Ice cubes melt slightly and re-freeze into one block, jamming the auger. Common after a long no-use stretch or when freezer temp drifts above 5°F. Symptom: motor hums but no cubes drop.
Fix: Empty bucket, thaw chute with a hair dryer on low, re-seat bucket, confirm freezer at 0–5°F. Replace auger motor if seized.
Typical all-in: Free DIY → $245–$345 if auger motor
5. Failed dispenser switch / actuator / cradle
What it is: The lever / pad you press to dispense has worn micro-switches behind it. Symptom: water works but ice doesn't (or vice versa), or you have to press extra hard.
Fix: Replace OEM dispenser switch assembly or actuator paddle, verify both ice and water circuits.
Typical all-in: $215–$305 all-in
6. Failed dispenser control board (Whirlpool, GE, Samsung)
What it is: The dispenser-front PCB controls the chute door solenoid, auger motor, and dispenser lights. Symptom: dispenser lights dim or out, no response to any button. Common on Whirlpool W10503278 / GE WR55X / Samsung DA92 boards.
Fix: Replace OEM dispenser board, verify all three circuits (water, cubed, crushed) cycle.
Typical all-in: $285–$425 all-in