Table 3E - Troubleshooting Chart - Noisy System - Lochinvar 151 - 801 Service Manual

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Troubleshooting
Table 3E Troubleshooting Chart - Noisy System
FAULT
- 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.
- Gas/air mixture problem.
Noisy
Operation
- Dirty/damaged burner.
- Low water flow through the heat exchanger.
- Air in the piping system.
- Low system water pressure.
- Blown fuse.
No Pump - Faulty pump.
Operation
- Faulty pump relay.
- Internal fault on control board.
Relief Valve
- System pressure exceeds relief valve
Opening
setting.
(continued)
CAUSE
Outdoor Armor Water Heater Service Manual
CORRECTIVE ACTION
• Refer to Section 4 - Gas Connections of the Outdoor Armor
Water Heater Installation and Operation Manual for
detailed information concerning the gas supply.
• Refer to the Gas Valve Adjustment Procedure on
pages 37-38 of this manual for the proper gas valve
setting.
• Refer to page 22 in this manual for the burner removal
and inspection procedure. Clean or replace the burner
as necessary.
• Refer to Section 3 - System Piping of the Armor
Outdoor Water Heater Installation and Operation Manual
for minimum flow rates.
• Properly purge all air from the piping system.
• Verify system pressure is a minimum of 12 PSI.
• Replace fuse F1 on the control board, see page 24 of
this manual.
• Replace pump.
• Replace pump relay.
• Replace main control board.
• Lower the system pressure below the 150 PSI rating of
the supplied relief valve.
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