Errors

• - select type -
• CG100D
• CG20D
• CG30D
• CG40D
• CG50D
• CG60D
• CG70D
• CG80D
• CG90D
• CL3-091(S)
• CL3-091(W)
• CL3-105(S)
• CL3-105(W)
• CL3-140(S)
• CL3-140(W)
• CL4-126(S)
• CL4-126(W)
• CL4-175(S)
• CL4-175(W)
• CL4-210(S)
• CL4-210(W)
• CL5-168(S)
• CL5-168(W)
• CL5-245(S)
• CL5-245(W)
• CL5-280(S)
• CL5-280(W)

• - select code -
• Err1
• Err2
• Err3
• Err4
• Err5
• Err6
• Err7
• Err8

Boiler type CL4-210(W)

Error code Err4

Cause:

Burner Output (B1) Fault

Solution:

B1 output sensed powered during safety output relay check sequence or un-powered during running, or powered in idle in combination with water temperature above 264°F limit. Cycle power to the control. Replace control if problem persists.