Camus Hydronics Dynaforce Series - Page 54

54
COMPONENT
FAILURE MODE
ANALYSIS
Flame Disappears
During a Run
Cycle
• The Dynaforce® boiler was
running and flame signal suddenly
disappeared.
• Lockout: 106, 107, 108, 109
• Verify that all air has been purged from gas line
• Verify that boiler is properly grounded
• Inspect flame sensor and associated wiring. Replace if
necessary
• Check for flame sensor cracks in the insulator or continuity to
ground
• Adjust the air proving switch. Turn counter-clockwise to reduce
sensitivity
• Adjust the blocked flue switch. Turn clockwise to reduce
sensitivity
• Verify incoming gas supply pressure and that it coincides with
Table 7.
• Verify that the gas line connections to the boiler are adequate.
Refer to Table 6.
• Verify that the vent/ air inlet piping (if equipped) are correctly
installed and obstructions are not present
• Verify that 24 VAC is being supplied to the gas valve during
operation. If a signal cannot be detected, the transformer needs
to be replaced
• Inspect the burner. Refer to Burner Maintenance in section 10.5
• Replace the Dynaforce® Controller if necessary
Noisy Operation
• Supply Gas Issue
• Refer to Part 3 Gas Connection in this manual.
• Natural Gas Pressure reads between 3” w.c. and 14” w.c.
• L.P. Gas Pressure should be at 11” w.c.
• Air/Gas Mixture Issue
• Refer to Section 8.3 Gas Valve Adjustment Procedure for proper
combustion setting.
• Air Inlet and/or Vent configuration
• Refer to Part 2 Air Inlet and Venting
• Dirty/ Damaged Burner
• Refer to Burner Maintenance in section 10.5 of this manual for
the burner removal and inspection procedure. Clean or replace
the burner, if required.
• Fan is vibrating
• Check that all fan bolts are torqued to 20 lb-ft (DR300 – 1000),
25 lb-ft (DR1200 – 5000)
• Air in the piping system
• Purge all air from the piping system
Auto Reset High
Limit Trips
• The outlet temperature has
exceeded the set point
temperature specified.
• Alert: 67, 79, 137, 303-310
• ILK OFF
• Verify that the system is full of water and that all air has been
properly purged from the system.
• Verify that ∆T does not exceed 30
o
F across the heat exchanger
• Verify that the boiler is piped properly.
• Verify that 120VAC is being supplied to the boiler pump on a call
for heat. If voltage cannot be detected check wiring.
• Verify that the pump is circulating when 120VAC is detected. If
not, pump impeller may be stuck. Use a flat head screwdriver on
face of pump to turn impeller manually
• If 120VAC is present during a call for heat, but the pump still
does not circulate, replace the pump.
• Replace the main Dynaforce® Controller if necessary