Bosch Error Code LED1 green: Green LED1 on – main board powered (Heat Pump)
Bosch error code LED1 green on a heat pump means: Green LED1 on - main board powered. It is also called Bosch diagnostic code LED1 green.
Homeowner? What Bosch code LED1 green means for you
Usually minor Your heat pump is reporting: Green LED1 on - main board powered. 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 Bosch error code LED1 green mean?
On the outdoor driver board, the green LED1 is steady on when the main board has power and off when the board has no power. This is the normal powered state. The red LED2 (compressor) and LED3 (fan) blink patterns in the same table could not be read from the text export.
Applies to: BOVA IDS Premium Connected (36-60) and IDS Light (BOVA15) heat pumps
Bosch models that use code LED1 green
BOVA15-24BOVA15-36BOVA15-60BOVA36-20BOVA60-20
Other Bosch Heat Pump codes
All Bosch Heat Pump error codes →
Bosch code LED1 green: homeowner questions
What does Bosch code LED1 green mean?
Green LED1 on - main board powered. On the outdoor driver board, the green LED1 is steady on when the main board has power and off when the board has no power. This is the normal powered state. The red LED2 (compressor) and LED3 (fan) blink patterns in the same table could…
Is it safe to keep using my heat pump with code LED1 green?
Usually yes. Code LED1 green is normally minor, but if it keeps coming back have it checked.
Can I reset Bosch code LED1 green myself?
You can try one reset (power off for 30 seconds, then on). If Bosch code LED1 green comes back, the cause is still there and a licensed technician should check it.
Who can fix Bosch code LED1 green near me?
Aurora Star Tech Inc. repairs Bosch 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
- Force cooling for charging with the FORCE button Bosch · Heat Pump
- Pair the gateway by Bluetooth (Connect button) Bosch · Heat Pump
- Read system values with the CHECK button (point check) Bosch · Heat Pump
- Restart the gateway (Reset button) Bosch · Heat Pump
- Run the gateway diagnostic (Factory + Connect buttons) Bosch · Heat Pump
- Start a manual defrost test (hold FORCE 6 s) Bosch · Heat Pump
Source: Bosch IDS Premium Connected BTC 762003301 D (02.2025), control board LED table (troubleshooting section); IDS Light BTC 762003308 D (01.2025), control board LED table. 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.