HVACopediaGoodman · Air handler
E05 Air handler fuse open
What the control is telling you
The low-voltage fuse on the air handler control has blown; nothing runs.
Applies to: ComfortBridge communicating air handlers AVPTC**14 (B* revision board) and MBVC1201/1601/2001 modular blowers
Likely causes
- Short in the low-voltage wiring
Test and repair steps
- Warning: Turn off power to the air handler before working on wiring or the blower.
- Locate and fix the short in the thermostat, outdoor or accessory wiring.
- Replace the fuse with a 3 A automotive type fuse.
Models that show this code
21 models in Goodman/Amana ComfortBridge AVPTC/MBVC
Other codes on the same units
- E0F Condensate switch open - high water in drain pan
- Eb0 Blower motor not running with a demand present
- Eb1 Control lost communication with the blower motor
- Eb2 Motor horsepower does not match shared data
- Eb3 Blower limiting on power, temperature or speed
- Eb4 Blower motor lost rotor control or high current
- Eb5 Blower motor failed to start 10 times
- Eb6 Blower shut down for voltage or power module temperature
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Source: Goodman ComfortNet ASXC/GSXC/DSXC, ASZC/GSZC/DSZC, AVPTC/MBVC service manual, Air Handler Troubleshooting Matrix (B*) p.59-60. Summarized in our own words; check the original manual for your model.
Homeowner looking at this code? See what it means for you and when to call a technician.
For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.