Whirlpool Wrs588fihz04 fridge. It will not dispense water or ice thru door. Makes ice, dispenses water using ‘measured fill’.. Have no error codes. Replaced paddles, checked another control display panel.. same result. Could it be another bad display board , or the main board/ capacitor.
Appreciate any insight 
Thanks for the detailed information! Since your Whirlpool WRS588FIHZ04 makes ice normally and dispenses water through Measured Fill, but neither the water nor ice dispenser works when you press the paddles, that gives us a pretty good starting point.
I wouldn’t replace the main control board or another display board just yet.
The fact that Measured Fill works tells us the refrigerator can operate the water valve and deliver water. Since the ice maker produces ice, we also know the ice-making system is functioning.
My first suspicion is a problem with the paddle input circuit, its wiring, or the dispenser control’s ability to recognize those inputs.
Here’s how I’d narrow it down.
Make sure the dispenser isn’t locked. Try holding the Lock button for approximately 3 seconds to toggle the setting.
Then select Water and press the paddle. Repeat with Ice selected.
If neither responds, continue.
When you press either paddle, watch the display closely.
If nothing happens with either paddle, that points toward a shared input or wiring problem rather than two separate mechanical failures.
Since you’ve already replaced the paddles and tried another display control, I would inspect the wiring connections behind the dispenser assembly.
Unplug the refrigerator first.
Check for loose connectors, bent terminals, corrosion, or damaged wires. Pay particular attention to any wiring shared by both dispenser paddles.
Also inspect the wiring harness near the freezer door hinge for damage.
Yes, absolutely. And there’s an interesting clue.
I found a report involving the earlier WRS588FIHZ00 with almost identical symptoms: Measured Fill worked, normal paddle dispensing didn’t, and both paddles and the display board had been checked. The owner ultimately traced the problem to a damaged main control board, reporting burn marks on it. That’s one repair report, not proof that yours has the same failure.
Given everything you’ve already replaced, the main board is a reasonable suspect, but I would inspect the wiring and verify the paddle signals first.
A failed capacitor or voltage-regulation circuit on the main board is possible, but I wouldn’t replace individual capacitors without confirming the failure.
Your answers should help us determine whether to concentrate on the paddle wiring, dispenser interface, or main control board before spending money on another part.
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Thanks for the update! Those details help narrow things down quite a bit on your Whirlpool WRS588FIHZ04.
The biggest clue is that the dispenser light dims when you press the paddle, and the ice dispenser sometimes works briefly before stopping.
That makes me suspicious of an electrical problem rather than the ice maker or a mechanical problem with the ice chute.
Since Measured Fill works from the display, we know the refrigerator can operate the water dispenser through at least one control path.
1. Check for a voltage drop when pressing the paddle.
If the display and dispenser light dim together, something may be pulling down the power supply when the dispenser is activated.
Try this simple comparison:
If both cause dimming, I’d be more suspicious of a shared electrical supply, wiring connection, or dispenser control issue.
If it only happens with ice, we should concentrate on the auger motor circuit and its wiring.
2. Check the freezer door wiring harness again.
Even though you didn’t find anything unusual, wiring can break internally without visible damage.
Pay particular attention to the harness near the freezer door hinge, where repeated opening and closing can stress the wires.
With the refrigerator unplugged, inspect the connections and wiring for damage or loose terminals.
3. Check the auger motor circuit.
A failing auger motor or a wiring problem in that circuit could cause excessive electrical loading when dispensing ice.
With power disconnected, inspect the motor connections for corrosion, moisture, or damaged wiring.
If the light dims only when the auger is commanded to run, the auger circuit becomes a stronger suspect.
4. Don’t replace the display board just yet.
Since you’ve already tried another display panel without changing the symptoms, I wouldn’t purchase another one until we verify the electrical supply and dispenser circuits.
A main control board problem is possible, but we don’t have enough evidence to condemn it.
These answers should help us determine whether we’re dealing with a voltage supply issue, a failing auger motor circuit, or a dispenser control problem.
My main concern right now is the dimming light. That’s an important electrical symptom, and I’d investigate it before replacing any more parts.
Thanks for checking those three things! That gives us a much clearer picture of what’s happening with your Whirlpool WRS588FIHZ04.
The fact that the entire display and dispenser light dim when dispensing ice, and the auger motor stops at the same time, is a particularly important clue.
Here’s what your results tell us:
Since both paddles have problems, but only the ice dispenser causes the display to dim, I suspect we may have an electrical issue affecting the dispenser circuits.
1. Check the freezer door wiring harness first.
Even though the wiring looks good, a wire can be broken internally or have a poor connection.
Unplug the refrigerator and inspect the harness at the freezer door hinge, especially where the wires bend as the door opens and closes.
If possible, check continuity through the individual wires while gently moving the harness. A reading that jumps between continuity and an open circuit would indicate a damaged wire.
2. Check whether the auger motor is causing the voltage drop.
Since the display dims when the auger operates, the motor or its wiring could be putting excessive load on the electrical circuit.
With the refrigerator unplugged, disconnect the auger motor if it’s safely accessible.
Restore power and briefly press the ice paddle.
This test isn’t conclusive by itself, because disconnecting the motor removes its normal electrical load, but it helps narrow the possibilities.
3. Check the control board’s supply voltage.
If you have a multimeter, the next useful test is measuring the dispenser control’s DC supply voltage while pressing the ice paddle.
We want to know whether the voltage remains steady or drops when the display dims.
The correct test points and expected voltage need to be verified from the wiring diagram for this model before probing the board. These are live electrical tests, so only perform them if you’re comfortable working around energized components.
At this point, I’d prioritize the freezer door harness, auger motor circuit, and dispenser power supply before replacing the main control board.
The fact that Measured Fill works makes a completely failed water valve less likely. And since you’ve already tried another display panel, I wouldn’t replace that again without additional testing.
When you press the ice paddle and the entire display dims, does the display immediately return to normal brightness when you release the paddle, or does it stay dim for a few seconds before recovering?
That distinction will help us determine whether we’re seeing a voltage drop under load or a control circuit temporarily shutting down.
I’m not very experienced with some of the tests you recommended. To your question, after releasing the paddle the brightness comes back in about 3 seconds
Thanks for clarifying! And no worries about the electrical testing. We can keep this simple and concentrate on a few safe checks before getting into anything more complicated.
On your Whirlpool WRS588FIHZ04, the fact that the display takes about 3 seconds to return to normal brightness is another useful clue.
That delayed recovery makes me suspicious of a power supply or control circuit that’s temporarily shutting down under load and then recovering. It doesn’t prove the main control board is bad, but it does suggest something more than a simple paddle switch problem.
1. Try dispensing ice with the ice bucket removed.
Remove the ice bucket, close the freezer door, and briefly press the ice paddle.
Listen for the auger motor and watch the display.
Don’t reach into the dispenser mechanism during this test.
2. Try dispensing water again.
Press the water paddle several times, allowing a few seconds between attempts.
See whether it consistently dispenses about ½ ounce and stops or whether the amount varies.
Since Measured Fill works, we’re trying to determine whether the problem is specific to the paddle-controlled dispensing function.
3. Watch what happens when the display dims.
You don’t need a meter for this test. Just observe whether the display goes completely dark, restarts, or simply becomes dim before recovering.
Based on everything you’ve reported, I would concentrate on the dispenser’s electrical supply and the auger motor circuit. The main control board remains a possibility, but I wouldn’t recommend replacing it yet.
Because you’re not comfortable with electrical testing, I’d avoid live voltage measurements or disconnecting motor wiring for now.
Those two observations should help us decide whether the next step is checking for a mechanical load or having the electrical circuit tested.
With the ice bucket removed, it behaved the same. Runs 2-3 seconds dims and stops. However noticed continue pressing paddle, the display light was flickering
Water paddle responded the same. If I continue pressing on paddle I get the same 1/2 Oz, and again approximately every 5 seconds
Display does not go dark or seem to restart, just dims before recovering
There are reports from owners of the same WRS588FIHZ04 model experiencing almost identical symptoms: intermittent water and ice dispensing, flickering lights, and normal Measured Fill operation.
In one case, the owner identified a failed capacitor on the refrigerator’s main control board. Other owners reported that replacing the main control board corrected the dispenser surging.
Reddit+1
This makes the main control board my leading suspect now.
Since you’re not experienced with electrical testing, I wouldn’t ask you to perform live voltage measurements.
Instead:
Don’t touch the circuitry or attempt to repair individual components. A board can fail without visible damage, so a clean appearance won’t rule it out.
Given the tests you’ve already completed, I would favor inspecting the main control board before spending money on another dispenser display, paddle switch, or auger motor.
Would you be comfortable unplugging the refrigerator, removing the rear control board cover, and sending me a picture of the board?
That would be a good next step without requiring you to perform electrical measurements.
Yes, I think I can do that tomorrow. Until then, have a good night and I’ll get back to you
Thank you
I am out of the office till 10am eastern Monday Nov. 9
