3 Troubleshooting
Table 3D Troubleshooting Chart - Noisy System
FAULT | CAUSE |
| CORRECTIVE ACTION |
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| - Gas supply problem. | • Refer | to the | Gas | Connections | Section | of the |
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| Installation and Operation Manual for detailed | |||||
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| information concerning the gas supply. |
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| - Gas/air mixture problem. | • Refer to the Checking Manifold Gas Pressure and | |||||
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| Combustion Analysis Procedure on pages 29 and 30 of | |||||
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| this | manual | for | the proper | settings. | Verify |
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| that the vent/air intake lengths do not exceed the | |||||
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| maximum listed in the Venting section of the | |||||
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| Installation and Operation Manual. |
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| - Dirty/damaged burner(s). | • Refer to pages 28 and 29 in this manual for the burner | |||||
Noisy |
| removal and inspection procedure. Clean or replace the | |||||
Operation |
| burner as necessary. |
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-Low water flow through the heat exchanger. • Refer to the Water Connections Section of the
Installation and Operation Manual for minimum flow rates. Verify that the appliance is piped in a primary/secondary fashion and that the appliance and system pump are running on a call for heat.
| - Air in the piping system. | • Properly purge all air from the piping system. | |
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| - Low system water pressure. | • Verify system pressure is a minimum of 12 PSI. | |
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| - Faulty pump relay. | • Replace relay. |
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No Pump |
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- Faulty pump. | • Replace pump. |
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Operation - |
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Boiler Pump |
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System Pump | - Internal fault on control board. | • Check fuse F5. |
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or |
| • Replace main control board. |
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DHW Pump |
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| Note: Make sure the boiler pump horse power (hp) does | |
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| not exceed 1 hp. |
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| - System pressure exceeds relief valve | • Lower the system pressure below | the rating of |
| setting. | the supplied relief valve or replace the standard relief | |
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| valve with a higher rated valve up to the maximum | |
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| pressure of the heat exchanger. |
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Relief Valve |
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- Improperly sized expansion tank. | • Install properly sized expansion tank. |
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Opening |
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- Outlet water temperature in excess of 210°. | • Check setpoint of temperature control. |
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| • Check temperature rise across heat exchanger. Refer to | |
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| the temperature rise chart in | the Water |
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| Connections Section of the Installation and Operation | |
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| Manual. |
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36 
