Rheem Error Code 68: No blower communication (NO BLWR COMM) (Furnace)
Rheem error code 68 on a furnace means: No blower communication (NO BLWR COMM). It is also called Rheem diagnostic code 68.
Homeowner? What Rheem code 68 means for you
Stop and call Your furnace is reporting: No blower communication (NO BLWR COMM). This code is a safety shutdown. Turn the furnace 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 Rheem error code 68 mean?
IFC cannot communicate with the ECM blower motor. Thermostat also shows Call For Service / CHECK FURNACE to the homeowner.
Applies to: RGPE/RGLE 2-stage 80+
Common causes of Rheem code 68
- Loose/broken IFC-to-ECM communication wiring
- No power to the motor
- Failed ECM motor control
Rheem models that use code 68
RGLE-05(-)BMKRRGLE-07(-)AMKRRGLE-07(-)BRQRRGLE-10(-)BRMRRGLE-12(-)ARMRRGPE-05(-)BMKRRGPE-07(-)AMKRRGPE-07(-)BRQRRGPE-10(-)BRMRRGPE-12(-)ARMR
Other Rheem Furnace codes
All Rheem Furnace error codes →
Rheem code 68: homeowner questions
What does Rheem code 68 mean?
No blower communication (NO BLWR COMM). IFC cannot communicate with the ECM blower motor. Thermostat also shows Call For Service / CHECK FURNACE to the homeowner.
Is it safe to keep using my furnace with code 68?
No. Code 68 is a safety shutdown, so keep the furnace off until a licensed technician has checked it.
Can I reset Rheem code 68 myself?
Do not keep resetting it. Repeated resets can hide a safety problem; a licensed technician needs to find the cause.
Who can fix Rheem code 68 near me?
Aurora Star Tech Inc. repairs Rheem furnaces in Vaughan, Toronto and across the GTA. Call (647) 657-2977 or book a service call online.
Homeowner help: Furnace Not Turning On: What to Check · Furnace Blinking Light: What the Flash Codes Mean
Troubleshooting guides
- Blowing cold air All brands · Furnace
- No heat All brands · Furnace
- Short cycling All brands · Furnace
- Blower does not start after burners light Rheem · Furnace
- Burners go out before the heat call ends / short cycling Rheem · Furnace
- Communicating system not found / no communication Rheem · Furnace
- ECM blower does not start on heat Rheem · Furnace
- Furnace no heat - sequence troubleshooting Rheem · Furnace
- Furnace short cycles or does not hold setpoint Rheem · Furnace
- Gas valve does not shut off when heat call ends Rheem · Furnace
- Indoor blower does not start after burners light Rheem · Furnace
- Inducer (draft motor) does not start on heat call Rheem · Furnace
- Inducer does not run / does not run on low speed Rheem · Furnace
- Inducer runs 60 s then shuts off for 5 minutes, or runs continuously Rheem · Furnace
- Inducer runs 60 seconds then off for 5 minutes Rheem · Furnace
- No heat - inducer (IDM) does not start Rheem · Furnace
- No heat - POWER LED off Rheem · Furnace
- Read target airflow from the CFM LED Rheem · Furnace
- Thermostat does not hold room temperature Rheem · Furnace
Source: RGPE/RGLE: Table 16 p.49 / Table 20; Fig. 45 p.63. 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.