F4
What code F4 means on a Dacor dishwashers, what causes it, and which part to check first.
● SEVERITY: MEDIUM
Dacor F4 means: No signal from the water pressure switch. The documented cause is: Unplug the dishwasher or shut off the house circuit breaker to disconnect electrical power. Remove the lower access panel. Check wire harness connections.
What F4 means
No signal from the water pressure switch
The display shows F4 and the machine stops until the fault is cleared.
What the technical documentation says
Causes documented in the technical source published by applianceaid.com
| DOCUMENTED CAUSE OR CHECK |
|---|
| Unplug the dishwasher or shut off the house circuit breaker to disconnect electrical power |
| Remove the lower access panel |
| Check wire harness connections |
| Reconnect any loose wires on wire harness for the water pressure switch |
| Replace the wire harness if damaged |
| If the wire connections are okay, replace the water pressure switch |
Replacement parts
Tools you'll need
Before you open anything
Unplug the machine and close the water tap before removing any panel. The heating element and the wash water can stay hot long after the cycle ends.
What to check, in order
From the quickest check to the one that needs a technician.
Find a specialist
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Frequently asked questions
What does F4 mean on a Dacor?
No signal from the water pressure switch The documented cause is: Unplug the dishwasher or shut off the house circuit breaker to disconnect electrical power. Remove the lower access panel. Check wire harness connections. Reconnect any loose wires on wire harness for the water pressure switch. Replace the wire harness if damaged. If the wire connections are okay, replace the water pressure switch
Can I fix F4 myself?
It depends on the part involved: Unplug the dishwasher or shut off the house circuit breaker to disconnect electrical power. Remove the lower access panel. Check wire harness connections. Reconnect any loose wires on wire harness for the water pressure switch. Replace the wire harness if damaged. If the wire connections are okay, replace the water pressure switch Clearing a filter or straightening a hose is within reach of anyone; anything behind a panel means mains electricity and water together — that is a job for a technician.
Does Dacor use other codes on this appliance?
Yes: we document 4 other codes for Dacor on this dishwashers. They are listed at the bottom of this page, each with its own meaning.
Does the same code mean the same thing on other brands?
Often not. The same two characters can point to completely different faults depending on the manufacturer — always check the page for your own brand.