Gree Error Code n4: Maximum output limit (forced energy saving) (Heat Pump)
Gree error code n4 on a heat pump means: Maximum output limit (forced energy saving). It is also called Gree diagnostic code n4.
Homeowner? What Gree code n4 means for you
Usually minor Your heat pump is reporting: Maximum output limit (forced energy saving). This code is usually informational or minor. The safe checks below often clear it; call us if it keeps showing up.
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.
- Look at the air filter. If it is grey and clogged, replace it; a blocked filter causes many shutdowns.
- In winter, keep snow and ice off and away from the outdoor unit. A short defrost cycle with steam is normal.
- Try one reset: turn the power off for 30 seconds, then back on. If the code comes back, stop resetting and call a technician.
Call (647) 657-2977Book a service call
Licensed technicians serving Vaughan, Toronto and the GTA.
What does Gree error code n4 mean?
n4 is the outdoor-board menu entry that caps the maximum output: 10 is 100 percent (default), 09 is 90 percent and 08 is 80 percent. Cooling and heating capacity drop with the cap.
Applies to: Gree GMV6 Ultra Heat Mini VRF 36-60k (GMV-V..WL/C-T(U))
Gree models that use code n4
GMV-V36WL/C-T(U)GMV-V48WL/C-T(U)GMV-V60WL/C-T(U)
Other Gree Heat Pump codes
All Gree Heat Pump error codes →
Gree code n4: homeowner questions
What does Gree code n4 mean?
Maximum output limit (forced energy saving). n4 is the outdoor-board menu entry that caps the maximum output: 10 is 100 percent (default), 09 is 90 percent and 08 is 80 percent. Cooling and heating capacity drop with the cap.
Is it safe to keep using my heat pump with code n4?
Usually yes. Code n4 is normally minor, but if it keeps coming back have it checked.
Can I reset Gree code n4 myself?
You can try one reset (power off for 30 seconds, then on). If Gree code n4 comes back, the cause is still there and a licensed technician should check it.
Who can fix Gree code n4 near me?
Aurora Star Tech Inc. repairs Gree 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
- Cap the maximum output (function n4) Gree · Heat Pump
- Compressor will not run - Gree ductless Gree · Heat Pump
- Force a defrost cycle from the remote Gree · Heat Pump
- Force a defrost from the outdoor board (function n3) Gree · Heat Pump
- Limit the whole system to heating, cooling or fan only (function A6) Gree · Heat Pump
- Louver will not swing - Gree ductless Gree · Heat Pump
- Noise or vibration - Gree ductless Gree · Heat Pump
- Offset indoor engineering numbers (function n5) Gree · Heat Pump
- Outdoor fan will not run - Gree ductless Gree · Heat Pump
- Read live running parameters of an outdoor module (function n7) Gree · Heat Pump
- Read or clear the fault history (function n6) Gree · Heat Pump
- Restore system defaults from the outdoor board (0C) Gree · Heat Pump
- Run the outdoor commissioning sequence (steps 01 to 17) Gree · Heat Pump
- Set automatic energy saving (function n0) Gree · Heat Pump
- Set outdoor silence mode (function A7) Gree · Heat Pump
- Show indoor engineering numbers on the indoor units (function n8) Gree · Heat Pump
- Start pump-down (refrigerant recycle) mode, function A2 Gree · Heat Pump
- Start vacuum mode for evacuating pipework (function A8) Gree · Heat Pump
- Unit will not start - Gree ductless Gree · Heat Pump
- View the stored malfunction code on the remote (LIGHT x6) Gree · Heat Pump
- Water leaking from indoor unit - Gree ductless Gree · Heat Pump
- Weak cooling or heating - Gree ductless Gree · Heat Pump
Source: Gree GMV6 Ultra Heat Mini VRF 36-60k (GMV-V36-48-60WL-C-T(U)) service.pdf - section 4.2.3.8 and Chapter 3 Faults, 4.1 Error Indication. 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.