Bosch Heat Pump Error Code EA 326: How to Fix It

Q: What causes Bosch heat pump error code EA 326?

Error EA 326 is caused by communication failure between indoor and outdoor units, typically due to damaged communication cables, loose connections, faulty control boards, or electrical interference.

Q: Can I reset Bosch heat pump error EA 326?

You can try resetting by turning off power for 5 minutes, but EA 326 usually indicates a hardware issue that requires repair rather than just a reset.

Q: How much does it cost to fix EA 326 communication error?

Repair costs vary from $150-300 for cable replacement to $300-800+ for control board replacement, depending on the specific component that failed and labor costs in your area.

Q: Is error code EA 326 covered under Bosch warranty?

Coverage depends on your warranty terms and the cause of failure. Manufacturing defects are typically covered, but damage from external factors like power surges may not be covered.

Q: How long does EA 326 repair take?

Simple cable repairs take 1-2 hours, while control board replacement can take 2-4 hours depending on accessibility and system complexity.

Abstract

Error code EA 326 on your Bosch heat pump indicates a complete loss of communication between the indoor and outdoor units. This serious error prevents proper system operation and typically requires checking wiring connections, control boards, or communication cables.