Goodman Error Code L6: Lockout – open start circuit detected 4 times (Heat Pump)
Goodman error code L6 on a heat pump means: Lockout - open start circuit detected 4 times. It is also called Goodman diagnostic code L6.
Homeowner? What Goodman code L6 means for you
Stop and call Your heat pump is reporting: Lockout - open start circuit detected 4 times. This code is a safety shutdown. Turn the heat pump off and call a licensed technician. Do not keep resetting it. If you smell gas, leave the house and call your gas utility or 911 from outside.
Safe things you can check yourself
- Check the thermostat: right mode (Heat or Cool), set a few degrees past room temperature, and fresh batteries if it uses them.
- Check both breakers and the outdoor disconnect box beside the outdoor unit; all should be ON.
Call (647) 657-2977Book a service call
Licensed technicians serving Vaughan, Toronto and the GTA.
What does Goodman error code L6 mean?
The open start circuit fault was seen 4 times, 5 minutes apart, so the control locked out the compressor.
Applies to: Communicating 2-stage condensers and heat pumps with the PCBHR104 or PCBHR105 outdoor control (7-segment display): ASXC16/18, GSXC16/18, DSXC16/18, ASZC16/18, GSZC16/18, DSZC16/18
Common causes of Goodman code L6
- Compressor start winding open
- Failed run capacitor or capacitor wiring
- Compressor not wired correctly to the control
A technician checks these and 1 other possible causes on site before replacing any part.
Goodman models that use code L6
Show all 24 models
ASZC160241ASZC160361ASZC160421ASZC160481ASZC160601ASZC180241ASZC180361ASZC180481ASZC180601DSZC160241DSZC160361DSZC160481DSZC160601DSZC180361DSZC180481DSZC180601GSZC160241GSZC160361GSZC160481GSZC160601GSZC180241GSZC180361GSZC180481GSZC180601
Other Goodman Heat Pump codes
All Goodman Heat Pump error codes →
Goodman code L6: homeowner questions
What does Goodman code L6 mean?
Lockout - open start circuit detected 4 times. The open start circuit fault was seen 4 times, 5 minutes apart, so the control locked out the compressor.
Is it safe to keep using my heat pump with code L6?
No. Code L6 is a safety shutdown, so keep the heat pump off until a licensed technician has checked it.
Can I reset Goodman code L6 myself?
Do not keep resetting it. Repeated resets can hide a safety problem; a licensed technician needs to find the cause.
Who can fix Goodman code L6 near me?
Aurora Star Tech Inc. repairs Goodman heat pumps in Vaughan, Toronto and across the GTA. Call (647) 657-2977 or book a service call online.
Homeowner help: AC Running But Not Cooling: What to Check · Heat Pump Not Heating or Blowing Cold Air
Troubleshooting guides
- No heat - R-32 GLZS/ALZS heat pump Goodman · Heat Pump
- Outdoor coil iced / no defrost - R-32 GLZS/ALZS heat pump Goodman · Heat Pump
- Reversing valve not shifting - ComfortNet heat pumps Goodman · Heat Pump
Source: Goodman ComfortNet ASXC/GSXC/DSXC, ASZC/GSZC/DSZC, AVPTC/MBVC service manual, Unitary Diagnostic Codes PCBHR104 p.71-77 and PCBHR105 p.78-84. Written in our own words as a summary; always check the original manual.
General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.