Rangemaster Garbage Disposals Error Codes

E01

Garbage disposal will not power on at all, no humming, no click, wall switch appears to do nothing.

Primary Power Supply Failure

E02

Garbage disposal hums when switched on but the grinding plate does not turn.

Impeller Plate Jam / Rotor Locked

E03

Garbage disposal trips the circuit breaker or RCD immediately when switched on.

Motor Short Circuit / Earth Leakage

E04

Garbage disposal runs but water and waste do not drain; water backs up into the sink.

Discharge Blockage / Obstructed Outlet

E05

Garbage disposal stops mid-cycle and will not restart until reset button is pressed.

Thermal Overload Trip

E06

Garbage disposal makes a loud metallic grinding or rattling noise during operation.

Foreign Object in Grinding Chamber

E07

Garbage disposal emits a strong burning smell and may stop running.

Motor Overheating / Insulation Breakdown

E08

Garbage disposal runs but water leaks from the top where it meets the sink.

Sink Flange Seal Failure

E09

Garbage disposal leaks from the side or bottom of the unit body.

Internal Housing or Seal Failure

E10

Garbage disposal vibrates excessively and causes the sink or worktop to shake.

Imbalance / Mounting Misalignment

E11

Garbage disposal runs but makes a high-pitched squealing or screeching noise.

Bearing Wear / Shaft Misalignment

E12

Garbage disposal starts normally but cuts out after a few seconds without tripping the breaker.

Internal Overload or Control Cut-out

E13

Garbage disposal will not turn on from the air switch (countertop pneumatic button), but works when wired directly.

Air Switch / Pneumatic Control Failure

E14

Garbage disposal runs continuously and will not turn off with the switch or air button.

Stuck Relay / Welded Contacts

E15

Garbage disposal produces a foul odour even after running with water.

Organic Build-up in Grinding Chamber and Drain

E16

Garbage disposal is unusually loud compared to previous operation, with a harsh grinding sound even when empty.

Worn Shredder Ring / Chamber Erosion

E17

Garbage disposal will not start unless the flywheel is manually turned first with a hex key.

Weak Start Torque / Capacitor Failure

E18

Garbage disposal trips the internal reset button frequently, even with light loads.

Nuisance Thermal Trip

E19

Garbage disposal causes lights to flicker or dim significantly when starting.

High Inrush Current / Electrical Supply Issue

E20

Garbage disposal runs but dishwasher does not drain through the disposal connection.

Blocked Dishwasher Inlet / Knockout Not Removed

Symptom

Garbage disposal causes a low-frequency humming noise through the worktop and cabinets even when operating normally.

Structure-Borne Vibration Transmission

Symptom

Garbage disposal emits a buzzing sound for a second then stops, without tripping the breaker.

Stalled Start / Overload Protection Activation

Symptom

Garbage disposal intermittently fails to start; sometimes works after multiple switch attempts.

Intermittent Electrical Connection

Symptom

Garbage disposal is extremely hot to the touch after short use, even when not jammed.

Overheating Motor

Symptom

Garbage disposal leaks only when the dishwasher is draining.

Dishwasher Inlet or Hose Leak

Symptom

Garbage disposal makes a chattering or rapid clicking noise when switched on but does not spin.

Start Relay / Capacitor Engagement Fault

Symptom

Garbage disposal makes a loud pop and stops working; a smell of burnt electronics may be present.

Catastrophic Electrical Failure

Symptom

Garbage disposal makes a rhythmic knocking noise during operation, in time with the rotation.

Bent Impeller Lug or Foreign Object Impact

Symptom

Garbage disposal motor runs but the grinding plate does not move; no grinding action is observed.

Decoupled Drive / Sheared Coupling

Symptom

Garbage disposal runs but leaves large food particles unground and pushes them into the drain.

Reduced Grinding Efficiency

Symptom

Garbage disposal runs but water drains very slowly even though pipes are clear.

Restricted Outlet Port / Scale Build-up

Symptom

Garbage disposal splashes water and food particles back out of the sink opening during use.

Defective or Missing Splash Guard

Symptom

Garbage disposal switch shocks or tingles when touched.

Earthing / Grounding Fault

Symptom

Garbage disposal trips the GFCI/RCD outlet occasionally, especially when wet conditions exist under the sink.

Moisture-Induced Earth Leakage

Symptom

Garbage disposal turns on but water backs up into the second bowl of a double sink.

Cross-Bowl Drainage Restriction

Symptom

Garbage disposal will not turn on, but a faint click is heard from the unit when the switch is operated.

Stalled Motor / Jammed Flywheel