OXO
OXO Coffee Makers Error Codes
Complete list of fault codes and troubleshooting guides. Use the search below to find your specific error.
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ADD WATER
Display shows “ADD WATER” and brewing will not start even though the water reservoir appears to have water.
Low Water Level Detection Fault
CLEAN
“CLEAN” or a cleaning icon appears on the display and will not clear, or the machine refuses to brew until cleaning is performed.
Descale Cycle Required / Scale Sensor Triggered
DESCALING
Display shows “DESCALING” or a descaling icon and the machine may limit brewing volume or speed.
Scale Accumulation in Heating Circuit
ERR
Display shows a generic “ERR” or “ERROR” message and the machine will not start a brew cycle.
General Control System Fault
ERR1
Display shows “ERR1” and brewing is disabled.
Brew Temperature Sensor (NTC) Fault
ERR2
Display shows “ERR2” and the unit may shut down shortly after starting a brew.
Overheat / Thermal Cutoff Fault
ERR3
Display shows “ERR3” and the machine may not heat water or may stop mid‑brew.
Flow Sensor or Pump Fault
ERR4
Display shows “ERR4” and the brew cycle will not start or stops immediately.
Carafe or Lid Presence Detection Fault (Thermal Carafe Models)
ERR5
Display shows “ERR5” and the timer or clock functions do not operate correctly.
Real‑Time Clock / Timer Circuit Fault
HOT
Display shows “HOT” and the machine will not start a new brew immediately after finishing one.
Brew Temperature Lockout
LO
Display shows “LO” or a low‑temperature icon and coffee is not staying hot in the carafe or on the warming plate.
Warming Plate Temperature Low / Sensor Fault
NO CARAFE
Display shows “NO CARAFE” or a carafe icon and brewing will not start.
Carafe Detection Fault
NO FILTER
Display shows “NO FILTER” or a filter icon and the machine will not start brewing.
Filter Basket Detection Fault
SENSOR
Display shows “SENSOR” or a sensor icon and the machine will not brew.
General Sensor Circuit Fault
Symptom
Brewed coffee has a plastic or chemical taste that does not go away after several uses.
Taste Contamination from New or Degraded Components
Symptom
Brewed coffee has a sour or rancid taste even with fresh beans.
Oil and Residue Buildup in Brew Path
Symptom
Brewed coffee is excessively strong or bitter, even with normal coffee amounts.
Over‑Extraction / High Brew Temperature or Long Contact Time
Symptom
Brewed coffee is much weaker than expected, even with normal coffee amounts.
Under‑Extraction / Low Brew Temperature or Short Contact Time
Symptom
Brewed coffee is not hot enough when poured into the cup.
Low Brew or Holding Temperature
Symptom
Buttons on the control panel are unresponsive or require very hard presses.
Control Panel Keypad Failure
Symptom
Coffee maker does not power on at all; no lights or display when plugged in.
No Power / Dead Unit
Symptom
Coffee maker drips coffee onto the warming plate even when the carafe is removed.
Drip‑Stop Valve Not Sealing
Symptom
Coffee maker emits a burning smell during brewing.
Overheating or Electrical Insulation Breakdown
Symptom
Coffee maker heats but no water flows; you hear heating but nothing drips into the carafe.
No Water Flow / Airlock
Symptom
Coffee maker is extremely slow to brew; a full pot takes much longer than normal.
Restricted Water Flow / Scale Blockage
Symptom
Coffee maker leaks water from the bottom of the unit during or after brewing.
Internal Leak in Water Circuit
Symptom
Coffee maker makes loud buzzing or rattling noises during brewing.
Pump Vibration / Mechanical Noise Fault
Symptom
Coffee maker powers on but will not start brewing when the brew button is pressed.
Brew Start Inhibit / Interlock Fault
Symptom
Coffee maker starts but stops brewing mid‑cycle, leaving partially brewed coffee.
Mid‑Cycle Interruption / Thermal or Flow Fault
Symptom
Coffee maker’s clock or timer loses time or resets frequently.
Unstable Timer / Power Retention Fault
Symptom
Display is dim, flickering, or partially unreadable.
Display Module or Power Supply Fault
Symptom
Thermal carafe does not keep coffee hot for long; coffee cools quickly.
Carafe Insulation Failure
Symptom
Visible steam or moisture condenses heavily around the control panel or display.
Steam Intrusion into Electronics Area
Symptom
Warming plate stays hot even after the coffee maker is turned off.
Warming Plate Relay Stuck Closed
Symptom
Water level markings on the reservoir do not match the amount of coffee brewed.
Inaccurate Volume Measurement / Flow Meter Drift
Symptom
Water or coffee overflows from the brew basket, spilling onto the counter.
Brew Basket Overflow
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| ADD WATER |
Display shows “ADD WATER” and brewing will not start even though the water reservoir appears to have water.
|
Low Water Level Detection Fault | View Details |
| CLEAN |
“CLEAN” or a cleaning icon appears on the display and will not clear, or the machine refuses to brew until cleaning is performed.
|
Descale Cycle Required / Scale Sensor Triggered | View Details |
| DESCALING |
Display shows “DESCALING” or a descaling icon and the machine may limit brewing volume or speed.
|
Scale Accumulation in Heating Circuit | View Details |
| ERR |
Display shows a generic “ERR” or “ERROR” message and the machine will not start a brew cycle.
|
General Control System Fault | View Details |
| ERR1 |
Display shows “ERR1” and brewing is disabled.
|
Brew Temperature Sensor (NTC) Fault | View Details |
| ERR2 |
Display shows “ERR2” and the unit may shut down shortly after starting a brew.
|
Overheat / Thermal Cutoff Fault | View Details |
| ERR3 |
Display shows “ERR3” and the machine may not heat water or may stop mid‑brew.
|
Flow Sensor or Pump Fault | View Details |
| ERR4 |
Display shows “ERR4” and the brew cycle will not start or stops immediately.
|
Carafe or Lid Presence Detection Fault (Thermal Carafe Models) | View Details |
| ERR5 |
Display shows “ERR5” and the timer or clock functions do not operate correctly.
|
Real‑Time Clock / Timer Circuit Fault | View Details |
| HOT |
Display shows “HOT” and the machine will not start a new brew immediately after finishing one.
|
Brew Temperature Lockout | View Details |
| LO |
Display shows “LO” or a low‑temperature icon and coffee is not staying hot in the carafe or on the warming plate.
|
Warming Plate Temperature Low / Sensor Fault | View Details |
| NO CARAFE |
Display shows “NO CARAFE” or a carafe icon and brewing will not start.
|
Carafe Detection Fault | View Details |
| NO FILTER |
Display shows “NO FILTER” or a filter icon and the machine will not start brewing.
|
Filter Basket Detection Fault | View Details |
| SENSOR |
Display shows “SENSOR” or a sensor icon and the machine will not brew.
|
General Sensor Circuit Fault | View Details |
| – |
Brewed coffee has a plastic or chemical taste that does not go away after several uses.
|
Taste Contamination from New or Degraded Components | View Details |
| – |
Brewed coffee has a sour or rancid taste even with fresh beans.
|
Oil and Residue Buildup in Brew Path | View Details |
| – |
Brewed coffee is excessively strong or bitter, even with normal coffee amounts.
|
Over‑Extraction / High Brew Temperature or Long Contact Time | View Details |
| – |
Brewed coffee is much weaker than expected, even with normal coffee amounts.
|
Under‑Extraction / Low Brew Temperature or Short Contact Time | View Details |
| – |
Brewed coffee is not hot enough when poured into the cup.
|
Low Brew or Holding Temperature | View Details |
| – |
Buttons on the control panel are unresponsive or require very hard presses.
|
Control Panel Keypad Failure | View Details |
| – |
Coffee maker does not power on at all; no lights or display when plugged in.
|
No Power / Dead Unit | View Details |
| – |
Coffee maker drips coffee onto the warming plate even when the carafe is removed.
|
Drip‑Stop Valve Not Sealing | View Details |
| – |
Coffee maker emits a burning smell during brewing.
|
Overheating or Electrical Insulation Breakdown | View Details |
| – |
Coffee maker heats but no water flows; you hear heating but nothing drips into the carafe.
|
No Water Flow / Airlock | View Details |
| – |
Coffee maker is extremely slow to brew; a full pot takes much longer than normal.
|
Restricted Water Flow / Scale Blockage | View Details |
| – |
Coffee maker leaks water from the bottom of the unit during or after brewing.
|
Internal Leak in Water Circuit | View Details |
| – |
Coffee maker makes loud buzzing or rattling noises during brewing.
|
Pump Vibration / Mechanical Noise Fault | View Details |
| – |
Coffee maker powers on but will not start brewing when the brew button is pressed.
|
Brew Start Inhibit / Interlock Fault | View Details |
| – |
Coffee maker starts but stops brewing mid‑cycle, leaving partially brewed coffee.
|
Mid‑Cycle Interruption / Thermal or Flow Fault | View Details |
| – |
Coffee maker’s clock or timer loses time or resets frequently.
|
Unstable Timer / Power Retention Fault | View Details |
| – |
Display is dim, flickering, or partially unreadable.
|
Display Module or Power Supply Fault | View Details |
| – |
Thermal carafe does not keep coffee hot for long; coffee cools quickly.
|
Carafe Insulation Failure | View Details |
| – |
Visible steam or moisture condenses heavily around the control panel or display.
|
Steam Intrusion into Electronics Area | View Details |
| – |
Warming plate stays hot even after the coffee maker is turned off.
|
Warming Plate Relay Stuck Closed | View Details |
| – |
Water level markings on the reservoir do not match the amount of coffee brewed.
|
Inaccurate Volume Measurement / Flow Meter Drift | View Details |
| – |
Water or coffee overflows from the brew basket, spilling onto the counter.
|
Brew Basket Overflow | View Details |
No matching codes found
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