Bosch Error Code Continuous flashing: R-454B refrigerant leak protection (Air Handler)
Bosch error code Continuous flashing on a air handler means: R-454B refrigerant leak protection. It is also called Bosch diagnostic code Continuous flashing.
Homeowner? What Bosch code Continuous flashing means for you
Stop and call Your air handler is reporting: R-454B refrigerant leak protection. This code is a safety shutdown. Turn the air handler 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.
- Make sure the unit has power: its on/off switch (often looks like a light switch near the unit) is ON and the breaker in the electrical panel is not tripped.
Call (647) 657-2977Book a service call
Licensed technicians serving Vaughan, Toronto and the GTA.
What does Bosch error code Continuous flashing mean?
The leak sensor detected refrigerant.
Applies to: Bosch IDS Plus/Premium BIVA20 R-454B air handlers (2-5 ton)
Common causes of Bosch code Continuous flashing
- Refrigerant leak
- Other flammable gases
- Failed sensor
Bosch models that use code Continuous flashing
BIVA20-24BIVA20-36BIVA20-48BIVA20-60
Other Bosch Air Handler codes
All Bosch Air Handler error codes →
Bosch code Continuous flashing: homeowner questions
What does Bosch code Continuous flashing mean?
R-454B refrigerant leak protection. The leak sensor detected refrigerant.
Is it safe to keep using my air handler with code Continuous flashing?
No. Code Continuous flashing is a safety shutdown, so keep the air handler off until a licensed technician has checked it.
Can I reset Bosch code Continuous flashing myself?
Do not keep resetting it. Repeated resets can hide a safety problem; a licensed technician needs to find the cause.
Who can fix Bosch code Continuous flashing near me?
Aurora Star Tech Inc. repairs Bosch air handlers in Vaughan, Toronto and across the GTA. Call (647) 657-2977 or book a service call online.
Source: Bosch IDS Plus/Premium air handler BIVA20 installation BTC 762003302 C (10.2024), section 13 LED Flashing Troubleshooting, p.49-50. 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.