Brand: Generic
Category: Home HVAC System
Document Type:
Language: EN
Manual for BWBAAN000045 - Troubleshooting and error codes + PDF Download
Uploaded: April 7, 2025, 8:13 p.m.
Manual Publish Date: 2012-08-01
Warranty Summary
No warranty information found in this manual.
Normal Sequence of Operation:
- Thermostat calls for heat.
- Circulator activates to monitor water temperature.
- If thermostat cannot be satisfied, damper activates.
- Ignition system starts and burner ignites.
- Boiler heats water to setpoint.
- Burner deactivates, heating cycle completes.
- Circulator continues to operate until thermostat is satisfied.
Troubleshooting and error codes
| Error Code Number | Definition | Consequence |
|---|---|---|
| 4 | Flame current too low. Check for flame. | Non critical alarm |
| 6 | Flame sensed out of normal sequence (before opening or after closing gas valve). | Soft lockout |
| 18 | Gas valve relays welded. Five consecutive soft lockouts. | Hard lockout |
| 23 | Flame sensed during prepurge (before gas valve signaled opened). | Soft lockout |
| 32 | Sensor 1 error. Temperature sensor in well is not reading correctly. Verify it is connected to board. Replace if necessary. | Wait for recovery |
| 55 | Atmospheric damper end switch failed to close (end switch contacts stuck open). | Wait for recovery |
| 56 | Atmospheric damper end switch failed to open (end switch contacts stuck close). | Wait for recovery |
| 57 | Igniter flame rod shorted to burner ground | Wait for recovery |
| 58 | Igniter flame rod shorted to burner ground. Repair or replace igniter. | Wait for recovery |
| 59 | Line Voltage error - voltage out of specification high or low (15-37V (44-66Hz)) Applies only to thermostats having on-board transformer. | Wait for recovery |
| 60 | Polarity is wrong in this case. Thermostat input higher than threshold. | Wait for recovery |
| 61 | Line voltage unstable - possibly too may heavy loads switching on and off causing erratic supply voltage. | Wait for recovery |
| 62 | Soft lockout: maximum number of retries exceeded. Soft lockout is reset after one hour if alarm reason disappears. | Soft lockout |
| 63 | Soft lockout: maximum number of recycles exceeded. | Soft lockout |
| 64 | Soft Lockout - electronics failure. On-board self diagnostics detected error. | Soft lockout |
| 65 | Over temperature error. Sensor measured temperature in excess of maximum allowable limit. | Soft lockout |