77
13
Troubleshooting
(continued)
Table 13-3 Troubleshooting Chart - Noisy System
FAULT
CAUSE
CORRECTIVE ACTION
Noisy
Operation
Supply gas problem. Natural gas
pressures should be between 4 inches w.c.
and 14 inches w.c. LP gas pressures
should be between 8 inches w.c. and
14 inches w.c.
•
Refer to Section 7 - Gas Connections for
detailed information concerning the gas supply.
Gas/air mixture problem.
• Refer to the Gas Valve Adjustment Procedure on
page 86 of this manual for the proper gas valve setting.
Verify that the vent/air intake lengths do not exceed the
maximum listed in Section 3 - General Venting.
Dirty/damaged burner.
• Refer to page 72 in this manual for the burner removal
and inspection procedure. Clean or replace the burner
door assembly as necessary.
Low water flow through the heat exchanger. • Refer to Section 6A - Hydronic Piping for minimum
flow rates. Verify that the boiler and system pump are
running on a call for heat.
Air in the piping system.
• Properly purge all air from the piping system.
Low system water pressure.
• Verify system pressure is a minimum of 12 psi.
No Pump
Operation -
Boiler / DHW
Pump
Blown fuse.
• Replace fuse F1 on the control board, see page 75 of
this
manual.
Note:
Make sure pump amperage does not exceed
1.8
amps.
Faulty pump.
• Replace pump.
Internal fault on control board.
• Replace main control board.
Relief Valve
Opening
-
System pressure exceeds relief valve
setting.
• Lower the system pressure below the 30 psi rating of
the supplied relief valve or replace the standard relief
valve with a higher rated valve up to the maximum
pressure of the heat exchanger.
• Improperly sized expansion tank.
Installation & Service Manual
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