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Appliance Error Codes

What Does 4C Error Mean on Samsung DW80H99 Series?

Error 4C on Samsung DW80H99 Series: Water supply error. Follow the troubleshooting steps below to diagnose and fix this dishwasher issue. 4C indicates a water supply issue detected by your Samsung DW80H99 dishwasher. According to Samsung’s technical documentation, this error appears when the dishwasher fails to fill with water within the expected timeframe. You can attempt basic troubleshooting yourself by checking water connections and filters. If simple fixes don’t resolve it, professional service will be required due to potential electronic control board or valve failures. ## What Does 4C Mean? The Samsung DW80H99 series uses error code 4C to signal a water inflow malfunction, specifically when the machine detects insufficient water entering the unit during the fill cycle. Samsung’s service manual confirms this error triggers when the water level sensor doesn’t register adequate water volume within 4 minutes of activation. The dishwasher’s main control board monitors water inflow through both pressure switches and flow meters, with 4C appearing when either system reports abnormal values. This differs from drainage-related errors (like 5C) as it occurs exclusively during the filling phase. ## Possible Causes 1. Kinked or clogged inlet hose - The 5/8” diameter water supply hose connecting to your DW80H99 has internal debris or physical obstruction 2. Faulty water inlet valve - The solenoid-operated valve (part# DD81-00323A in Samsung manuals) fails to open properly 3. Low water pressure - Household supply pressure drops below 20 PSI (minimum required per Samsung specifications) 4. Defective water level pressure switch - The round disc-shaped sensor (part# DD82-00324B) provides false readings to the control board

5. Main control board failure - The primary PCB (part# DC97-17982A) incorrectly processes sensor data ## Troubleshooting Steps StepActionExpected Outcome
1Verify water supplyConfirm kitchen faucet runs normally and shutoff valve under sink is fully open
2Inspect inlet hoseStraighten kinks and disconnect hose to check for debris obstruction
3Test water pressureUse pressure gauge on faucet - must show 20-120 PSI (Samsung requirement)
4Reset dishwasherUnplug unit for 5 minutes to clear error memory
5Run diagnostic modePress Delay Start + High Temp Wash simultaneously for 3 seconds to display sensor readings ## When to Call a Technician Contact Samsung-certified repair if:
  • Water pressure tests normal (above 20 PSI) but error persists
  • Diagnostic mode shows inconsistent sensor readings
  • You hear no clicking sound from the inlet valve during startup
  • Error recurs after replacing inlet hose
  • Repair costs exceed $150 (average valve/control board replacement) ## Frequently Asked Questions ### Can I use my Samsung dishwasher with error 4C? No, attempting to run cycles with this error may damage the heating element due to dry operation.

How urgent is fixing error 4C? Moderately urgent - prolonged disuse can cause mineral deposits in valves. Fix within 7 days.

Section titled “How urgent is fixing error 4C? Moderately urgent - prolonged disuse can cause mineral deposits in valves. Fix within 7 days.”

What percentage of 4C errors require professional repair? service experience shows some cases require technician intervention, mostly for valve or board replacements.

Section titled “What percentage of 4C errors require professional repair? service experience shows some cases require technician intervention, mostly for valve or board replacements.”

Does homeowners insurance cover this repair? Typically not, as many cases stem from normal wear rather than sudden damage.

Section titled “Does homeowners insurance cover this repair? Typically not, as many cases stem from normal wear rather than sudden damage.”

How long does diagnosis take? Certified technicians usually diagnose within 15 minutes using Samsung’s DSS-5000 diagnostic tool. ### Is it safe to keep using my Samsung DW80H99 Series with error 4C? If error 4C does not indicate an immediate safety hazard such as a gas leak, electrical short, or water flooding, you can continue limited use while monitoring the appliance. However, running the dishwasher with an active error code increases the risk of further damage. Address the underlying issue as soon as possible. For high-severity errors, disconnect the appliance and contact a qualified technician. ### How much does it cost to fix error 4C on a Samsung DW80H99 Series? Repair costs for error 4C on the Samsung DW80H99 Series dishwasher depend on the root cause. DIY fixes such as cleaning filters, resetting the unit, or reconnecting loose wires cost nothing beyond basic tools. If a component replacement is needed, parts and labor from a certified technician are the main expenses. Contact a Samsung-authorized service provider for an accurate estimate based on your specific situation. ### What does error code 4C mean on a Samsung dishwasher? Error code 4C on Samsung dishwasher models indicates Water supply error. This error is detected by the appliance’s internal diagnostic system and displayed to alert the user that attention is needed. Refer to the troubleshooting steps above for guidance on resolving this issue.

Section titled “How long does diagnosis take? Certified technicians usually diagnose within 15 minutes using Samsung’s DSS-5000 diagnostic tool. ### Is it safe to keep using my Samsung DW80H99 Series with error 4C? If error 4C does not indicate an immediate safety hazard such as a gas leak, electrical short, or water flooding, you can continue limited use while monitoring the appliance. However, running the dishwasher with an active error code increases the risk of further damage. Address the underlying issue as soon as possible. For high-severity errors, disconnect the appliance and contact a qualified technician. ### How much does it cost to fix error 4C on a Samsung DW80H99 Series? Repair costs for error 4C on the Samsung DW80H99 Series dishwasher depend on the root cause. DIY fixes such as cleaning filters, resetting the unit, or reconnecting loose wires cost nothing beyond basic tools. If a component replacement is needed, parts and labor from a certified technician are the main expenses. Contact a Samsung-authorized service provider for an accurate estimate based on your specific situation. ### What does error code 4C mean on a Samsung dishwasher? Error code 4C on Samsung dishwasher models indicates Water supply error. This error is detected by the appliance’s internal diagnostic system and displayed to alert the user that attention is needed. Refer to the troubleshooting steps above for guidance on resolving this issue.”