Bryant 355MAV Furnace Error Codes

Variable Speed Gas Furnace | Control Board: Variable Speed Furnace Control

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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 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 →
15 Blower Motor 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 Low ✗ Call a pro →
24 Secondary Voltage Fuse Is Open High ✗ Call a pro →
25 Model Selection or Setup Error Low ✗ Call a pro →
31 High-Heat Pressure Switch or Relay Did Not Close or Reopened High ✗ Call a pro →
32 Low-Heat Pressure Switch Did Not Close or Reopened High ✗ Call a pro →
33 Limit Circuit Fault High ✓ Yes →
34 Ignition Proving Failure High ✗ Call a pro →
41 Blower Motor Fault High ✗ Call a pro →
42 Inducer Motor Fault High ✗ Call a pro →
43 Low-Heat Pressure Switch Open While High-Heat Pressure Switch Is Closed High ✗ Call a pro →
45 Control Circuitry Lockout High ✗ Call a pro →

How to Read the Error Code

The control status indicator LED displays diagnostic information. CONTINUOUS OFF indicates no power. CONTINUOUS ON indicates the control has 24 VAC power (normal standby). RAPID FLASHING indicates line voltage (115 VAC) polarity is reversed. 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. Stored status codes are erased automatically after 72 hours.

About This Model

The Bryant 355MAV is a variable speed gas furnace using the Variable Speed Furnace Control control board.