E7
Danby
Compressor Start / Inverter Communication Error
Danby refrigerator shows E7 and the compressor may not start or may short-cycle.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Failed compressor start relay or PTC, defective inverter board (on inverter models), loose compressor harness, main control board output failure
How to Fix / Troubleshooting
Safety: Unplug the refrigerator before working in the compressor compartment. Capacitors can hold charge; discharge safely if necessary. If you are not experienced with high-voltage circuits, contact a professional.
Steps to address E7:
- Access the machine compartment: Remove the rear lower cover to expose the compressor, start device, and control board.
- Inspect wiring: Check the harness from the main board to the compressor or inverter module. Ensure all connectors are fully seated and not burnt.
- Check the start relay/PTC (non-inverter models): Remove the start device from the compressor terminals and shake it gently; if it rattles or smells burnt, replace it. Test for continuity according to the part specifications.
- Inverter models: If your Danby uses an inverter board mounted near the compressor, inspect it for burnt components or discoloration. Verify that it is receiving proper DC supply from the main board (refer to service manual for voltages).
- Compressor test: With power disconnected, measure resistance between compressor terminals. Values should be finite and not shorted to ground. If windings are open or shorted, the compressor is faulty and requires professional replacement.
- Replace defective components: Install a new OEM Danby start relay/PTC or inverter board as needed. If the compressor and start components test good but E7 persists, the main control board may be defective.
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Repair Difficulty
Professional Required
5/5
Required Part
Compressor Start Relay / Inverter Board
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