Service Manual
3Troubleshooting (continued)
Table 3E Troubleshooting Chart - Fault Messages Displayed on Water Heater Interface
FAULT | DESCRIPTION | CORRECTIVE ACTION |
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| Either the manual reset low gas pressure | • Reset the pressure switches. |
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| switch or the manual reset high gas pressure |
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Gas Pressure SW | switch tripped. | • Measure the supply gas pressure to determine cause | ||||
| of failure. Natural gas pressures should be between | |||||
(will require a manual |
| 4 - 14 inches w.c. |
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reset once the condition |
| • Refer to Section 7 - Gas Connections of the Armor | ||||
has been corrected. |
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| Water Heater Installation and Operation Manual for | |||||
Press the RESET button |
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| detailed information concerning the gas supply. | |||||
on the SMART SYSTEM |
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display to reset.) |
| • Correct the supply gas pressure if necessary. | ||||
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| • Check for a loose or misplaced jumper if pressure | ||||
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| The flow switch is not making. | • Check water heater pump operation on a call for heat. | ||||
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Flow Switch |
| • Check for closed valves or obstructions in the water | ||||
| heater piping. |
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(will require a manual |
| • Verify system is full of water and all air has been | ||||
reset once condition has |
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| purged from the system. |
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been corrected. Press |
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the RESET button on |
| • Check for loose or misplaced jumpers if flow switch is | ||||
the SMART SYSTEM |
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| not installed. |
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display to reset.) |
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Blown fuse. | • Replace fuse F2 on the control board, see page 21 of | |||||
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Blocked Drain SW | The blocked drain switch has detected | • Check condensate tube from unit to floor drain for | ||||
excessive condensate build up inside the | proper installation and obstructions. |
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(will require a manual | unit. | • Inspect condensate trap for blockage. | Clean if | |||
reset once condition has |
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| necessary. |
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been corrected. Press |
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the RESET button on |
| • Check for loose wiring connection at wire | harness | |||
the SMART SYSTEM |
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| plug. |
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display to reset.) |
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| • Bad blocked drain switch. Replace switch. |
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Flame | The flame detector circuit is seeing a flame | • Check supply voltage for proper polarity. |
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Sequence | signal while no flame is present. |
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| • Check external wiring for voltage feedback. |
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(will require a manual |
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reset once the condition |
| • Check the flame rod and make sure it is clean. | ||||
has been corrected. |
| • Check the internal wiring for bad connections. | ||||
Press the RESET button |
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on the SMART SYSTEM |
| • Replace main control board. |
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display to reset.) |
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GV/Relay | The main control board did not detect the gas | • Check wiring harness connection at the gas valve and | ||||
Fail | valve. | at the main control board. |
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(will require a manual |
| • Replace the gas valve wire harness. |
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reset once the condition |
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has been corrected. |
| • Replace the gas valve. |
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Press the RESET button |
| • Replace the main control board. |
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on the SMART SYSTEM |
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display to reset.) |
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| 25 |
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