Camus Hydronics DynaMax DMH201 Installation And Service Manual page 47

SYMPTOM
• The DynaMax HS boiler was
• Lockout: 106, 107, 108, 109
• Alert 149, 150
Flame Disappears
During a Run Cycle
(Pressing the manual
OK button on the
DynaMax HS Control
Panel to restart the
ignition sequence)
• Supply Gas Issue
• Air/Gas Mixture Issue
Noisy Operation
• Air Inlet and/or Vent configuration
• Dirty/ Damaged burner
• Air in the piping system
• Incorrect igniter gap
• The outlet temperature has
• Alert 63, 67, 79, 137, 276-281
• ILK off
Auto Reset High
Limit Trips
• Manual Reset Safety High Limit
tripped, outlet temperature in excess
of 210
• Alert 63, 67, 79, 137, 276-281
• ILK off
Manual Reset High
Limit Trips
FAILURE MODE
running and flame signal suddenly
disappeared.
exceeded the setpoint temperature
specified.
o
F
ANALYSIS
• Verify that minimum fan speed is greater than 2500 RPM
• Verify that all air has been purged from gas line
• Inspect spark electrode and related wiring for damage and
connection errors.
• Verify that boiler is properly grounded
• Verify incoming gas supply pressure and that it coincides
with Table 9.
• Verify that the gas line connections to the boiler are
adequate
• 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 ignition. If a signal cannot be detected, the
transformer needs to be replaced
• Inspect flame sensor and associated wiring. Replace if
necessary
• Inspect the burner. Refer to Burner Maintenance in section
9.7
• Replace the DynaMax HS Controller if necessary
• Refer to Part 3 Gas Connection in this manual.
• Natural Gas Pressure should read between 3" w.c. and
14" w.c.
• L.P. Gas Pressure should be at 11" w.c.
• Refer to Gas Valve Adjustment Procedure in section 10.2
of this manual for the proper combustion setting.
• Refer to Part 2 Air Inlet and Venting
• Refer to Burner Maintenance in section 9.7 of this manual
for the burner removal and inspection procedure. Clean or
replace the burner, if required.
• Purge all air from the piping system
• Check that spark gap is 9/64"
• Verify that the system is full of water and that all air has
been properly purged from the system.
• Verify that the boiler is piped properly. Refer to Piping
Diagrams in Section 13 of this manual.
• 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 possible.
• If 120VAC is present during a call for heat, but the pump
still does not circulate, replace the pump.
• Replace the main DynaMax HS Controller if necessary
• Verify that the capillary tube is broken. If this is the case,
replace Manual Reset High Limit
• Verify that the system is full of water and that all air has
been properly purged from the system.
• Verify that the boiler is piped properly. Refer to Piping
Diagrams in Section 13 of this manual.
• Verify that 120 VAC 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 120 VAC is
supplied. If so, pump impeller may be stuck. Use a flat
head screwdriver on face of pump to turn impeller
manually.
• If 120 VAC is present during a call for heat, but the pump
still does not circulate, replace pump.
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