Section 13 Troubleshooting; Error Codes - Bradford White OmniTech BONH1250 Installation And Operation Instructions Manual
Category ii and iv venting with touchscreen controls
Hide thumbs
Also See for OmniTech BONH1250:
Table of Contents
Advertisement
Page 120
SECTION 13 Troubleshooting
13.A Error Codes
Condition
Flow Switch
•
•
•
Low Water
•
Cut Off
•
•
Manual
•
Reset High
Limit
•
•
Auto Reset
•
High Limit
•
•
Gas Valve
•
Lockout
•
•
High Gas
•
Pressure
•
•
Low Gas
•
Pressure
•
•
Information
Insufficient flow at the outlet of the
boiler/heater
Auto-reset Condition
Annunciation – "Warning Flow
switch open" on Message Screen
Insufficient water level in the
boiler/heater heat exchanger.
Manual-reset Condition
Annunciation – on Navigation Bar
Lockout: Low Water Cut Off
Outlet water temperature has
exceeded the manual reset high
limit setting
Manual-reset Condition
Annunciation – on Navigation Bar
Lockout: Man Reset High Limit
Outlet water temperature has
exceeded the auto reset high limit
setting
Auto-reset Condition
Annunciation – "Warning High limit
auto error" on Message Screen
SV2 Gas Valve Lockout refer to gas
valve display for detailed diagnostic
information
Annunciation – on Navigation Bar
Lockout: Open Safety Chain
Annunciation – "Safety Chain open
SV2 Valve ILK" on Message Screen
Boiler
The high gas pressure switch has
tripped
Manual-reset Condition
Annunciation – on Navigation Bar
Lockout: High Gas Pressure
The low gas pressure switch has
tripped
Manual-reset Condition
Annunciation – on Navigation Bar
Corrective Action
•
Faulty boiler/heater pump –
replace pump.
Faulty pump contactor – replace
•
contactor.
Blown boiler/heater pump fuse –
•
replace fuse F14 on the control
board.
•
Reset the LWCO from the reset
button on the LWCO module.
•
Verify the system is full of water
and all air has been purged from
the system.
•
Check for loose jumpers if the
LWCO is not installed.
Verify the system is full of water
•
and all air has been purged from
the system.
Verify the boiler/heater is piped
•
properly into the heating system.
•
Check for proper pump
operations.
•
Check the manual reset high
limit set point.
Verify the system is full of water
•
and all air has been purged from
the system.
Verify the boiler/heater is piped
•
properly into the heating system.
Check for proper pump
•
operations.
•
Check the manual reset high
limit set point.
Refer to Gas valve Diagnostic
•
menu active lockouts for detailed
troubleshooting information.
•
Refer to Section 3 for Gas
Supply and Piping information.
Verify supply and manifold gas
•
pressures satisfy installation
requirements.
•
Refer to Section 3 for Gas
Supply and Piping information.
Advertisement
Table of Contents
