Bryant 355MAV Furnace Error Codes

Variable Speed Gas Furnace | Control Board: Variable Speed Furnace Control (Carrier HK42FZ family)

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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 Critical ✓ Yes →
Continuous ON Normal Standby Info — →
Rapid Flashing Line Voltage Polarity Reversed Critical ✗ 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 ✓ Yes →
15 Blower Motor Lockout High ✗ Call a pro →
21 Gas Heating Lockout Critical ✗ Call a pro →
22 Abnormal Flame-Proving Signal Critical ✗ Call a pro →
23 Pressure Switch Did Not Open Medium ✗ Call a pro →
24 Secondary Voltage Fuse Is Open High ✗ Call a pro →
25 Model Selection or Setup Error Medium ✓ Yes →
31 High-Heat Pressure Switch Did Not Close or Reopened High ✓ Yes →
32 Low-Heat Pressure Switch Did Not Close or Reopened High ✓ Yes →
33 Limit Circuit Fault High ✓ Yes →
34 Ignition Proving Failure Medium ✓ Yes →
41 Blower Motor Fault High ✗ Call a pro →
42 Inducer Motor Fault High ✓ Yes →
43 Low-Heat Pressure Switch Open While High-Heat Pressure Switch Is Closed High ✓ Yes →
45 Control Circuitry Lockout Critical ✗ Call a pro →

How to Read the Error Code

Each status code 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 of the amber LED. LED continuous off = no power. LED continuous on = standby. LED rapid flashing = polarity reversed.

About This Model

The Bryant 355MAV is a variable speed gas furnace using the Variable Speed Furnace Control (Carrier HK42FZ family)-series integrated furnace control (IFC) board.