Bryant 340MAV Furnace Error Codes

Single Stage Gas Furnace | Control Board: Carrier IFC (Integrated Furnace Control)

Not your model? View all Bryant models →

Disclaimer
This information is for reference purposes only and does not guarantee accuracy or completeness. Always consult your owner's manual and a licensed HVAC technician for diagnosis and repair. Any actions taken based on this information are at your own risk.

All Error Codes

Code Name Severity DIY?
Continuous OFF No Power High ✓ Yes →
Continuous ON Normal Operation Info — →
Rapid Flashing Reversed Line Voltage Polarity High ✗ Call a pro →
11 No Previous Code Info — →
12 Blower On After Power Up Info — →
13 Limit Circuit Lockout High ✓ Yes →
14 Ignition Lockout High ✗ Call a pro →
21 Gas Heating Lockout High ✗ Call a pro →
22 Abnormal Flame-Proving Signal High ✗ Call a pro →
23 Pressure Switch Did Not Open High ✗ Call a pro →
24 Secondary Voltage Fuse Is Open High ✗ Call a pro →
31 Pressure Switch Did Not Close or Reopened High ✓ Yes →
33 Limit Circuit Fault High ✓ Yes →
34 Ignition Proving Failure High ✓ Yes →
45 Control Circuitry Lockout High ✗ Call a pro →

How to Read the Error Code

Each of the following status codes is a two digit number with the first digit determined by the number of short flashes and the second digit by the number of long flashes.

About This Model

The Bryant 340MAV is a single stage gas furnace using the Carrier IFC (Integrated Furnace Control) control board.