Error Code EHC

Error Code EHC: Diagnosis and Troubleshooting for Washer-Dryer Combinations

Error code EHC displayed on your AEG, Electrolux, or Quelle-Privileg washing machine indicates a specific electronic fault related to the draining function.

Applies Only To: This error code is exclusively relevant for washer-dryer combinations where the appliance performs both washing and drying cycles.

This specific code signifies an issue identified by the main control board when it attempts to command the drain pump relay to activate. Essentially, the control board suspects it cannot properly read the operational status or integrity of the circuit controlling the drain pump.

Troubleshooting Steps Based on Original Diagnosis:

1. Check the Drain Hose:

   • Inspection: The drain pump’s primary function is to evacuate water. If the drain hose is kinked, twisted, crushed, or improperly positioned (e.g., pushed too far down into the standpipe), the pump may stall or fail to fully empty the drum, which can sometimes trigger relay diagnostics errors.
   • Action: Carefully inspect the entire length of the drain hose accessible behind the machine. Ensure it has smooth, unrestricted flow and is not submerged too deeply into the drainage system. Remove any blockages you can safely access externally.

2. Check the Relay:

   • Understanding the Relay: The drain pump relay is an electromechanical switch located on the main control board or attached to it. It receives a low-voltage signal from the control board and uses that signal to send the necessary high-voltage power to the drain pump motor to start pumping water out. An “error reading the relay” suggests the control board is sending the command but is not receiving the expected feedback, or the relay itself has failed (e.g., contacts are fused or burnt out).
   • Action: Inspecting the relay typically requires accessing the internal electronics of the appliance. This component requires specialized electrical testing (checking continuity and resistance) to confirm failure. As this involves high-voltage electronics, this step is generally reserved for trained service personnel.

3. Contact a Technician if the Problem Persists:

   • If steps related to the drain hose inspection do not resolve the EHC code, the underlying cause is likely an internal electrical failure involving the drain pump relay or its associated circuitry on the main control board.
   • Resolution: Because diagnosing and replacing electronic components like relays often requires specific technical knowledge, diagnostic tools, and familiarity with the appliance’s wiring schematic, it is strongly recommended that you cease further attempts and contact an authorized service technician for professional diagnosis and repair.