If your CleaverBrooks Boiler experiences no ignition, possible causes include: a lack of spark due to a grounded electrode, cracked porcelain, improper electrode setting, loose terminal on the ignition cable, shorted cable, inoperative ignition transformer, or insufficient voltage at the pilot ignition circuit terminal. Alternatively, there may be a spark but no flame due to a lack of fuel, inoperative pilot solenoid, insufficient voltage at the pilot ignition circuit terminal, or too much air. Other potential issues are an open low-fire switch, defective combustion or atomizing air proving switches, a motor starter interlock contact not closed, or a defective flame detector with an obstructed sight tube or dirty lens. Check the damper motor and linkage. Inspect the interlock circuit.
D
Danielle ReyesAug 13, 2025
Why CleaverBrooks CBLE burner does not start?
C
cheryl04Aug 13, 2025
If your CleaverBrooks Boiler burner does not start, there are several potential causes. First, ensure there is voltage at the program relay power input terminals by checking the main disconnect switch, replacing any blown control circuit fuses, and repairing any loose or broken electrical connections. Second, the program relay safety switch may require resetting. Third, the limit circuit may not be completed; verify pressure and temperature settings, ensure the water level is adequate, and check fuel pressure. For oil-fired units, confirm the burner gun is in the full forward position and, for heavy oil-fired units, ensure the oil temperature is above minimum settings. Finally, check the fuel valve auxiliary switch to ensure the fuel valve interlock circuit is completed.
W
wilsondeniseAug 17, 2025
What to do if CleaverBrooks CBLE has pilot flame, but no main flame?
A
andrearodriguezAug 17, 2025
If the CleaverBrooks Boiler has a pilot flame but no main flame, it could be due to several reasons. First, the pilot flame might be insufficient and require adjustment. If it's a gas-fired unit, check that the manual gas cock is open and inspect the main gas valve and gas pressure regulator for proper operation. For oil-fired units, ensure the oil supply isn't cut off, the supply pump is working, and there is sufficient fuel; also, check the main oil valve, oil nozzle, gun, and lines. Additionally, the flame detector could be defective, the sight tube obstructed, or the lens dirty, requiring cleaning or replacement. Finally, check the voltage at the main fuel valve circuit terminal to ensure it's sufficient.
L
Lee SandovalAug 22, 2025
How to troubleshoot a CleaverBrooks Boiler with modulating motor that does not operate?
B
brian36Aug 22, 2025
If the CleaverBrooks Boiler modulating motor does not operate, first ensure the manual-automatic switch is in the correct position. Check for any loose or jammed linkage and tighten or repair it as needed. If the motor doesn't drive to open or close during pre-purge or close on burner shutdown, inspect the motor, electrical connections, and damper motor transformer for defects, repairing or replacing them as necessary. If the motor doesn't operate on demand, again check the manual-automatic switch and modulating control settings, and inspect the motor, electrical connections, and damper motor transformer.
A
awilsonAug 28, 2025
Why CleaverBrooks CBLE Boiler burner stays in low-fire?
A
Amy WongAug 28, 2025
If the CleaverBrooks Boiler burner stays in low-fire, it could be due to several reasons. The pressure or temperature might be above the modulating control setting, requiring an adjustment. The manual-automatic switch may be in the wrong position, so ensure it's set correctly. An inoperative modulating motor or a defective modulating control could also be the cause, necessitating replacement or repair. Finally, check for any binding or loose linkage, cams, setscrews, etc., and inspect and tighten or adjust them as needed.
T
Taylor WongNov 7, 2025
What to do if my CleaverBrooks CBLE Boiler experiences shutdown during firing?
A
Andrea JohnsonNov 7, 2025
If the CleaverBrooks Boiler shuts down during firing, it could be due to several reasons. First, check for any loss or stoppage of the fuel supply and restore it if necessary. Inspect the fuel valve for defects or loose electrical connections, replacing or securing them as needed. A weak or defective flame detector can also cause this issue, so consider replacing it. Ensure the lens is clean and the sight tube is unobstructed. If the programmer lockout switch hasn't tripped, examine the limit circuit for an opened safety control. If the programmer lockout switch has tripped, investigate the fuel lines and valves, flame detector, and interlock circuit. An improper air/fuel ratio (lean fire) can also lead to shutdowns, so adjust the ratio and inspect the linkage and damper. Finally, check th...
To Next Page
General
