Service Manual
3Troubleshooting
Table 3F (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Water Heater Interface
FAULT | DESCRIPTION | CORRECTIVE ACTION |
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| • Verify that the system is full of water and that all air |
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| has been properly purged from the system. |
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| • Verify that the water heater is piped properly into the |
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| heating system. Refer to Section 6 - System Piping |
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| of the Armor Water Heater Installation and Operation |
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| Manual for the proper piping methods for the Armor |
Outlet Temp High |
| water heater. |
Outlet water temperature has exceeded the | • Check for 120 VAC to the water heater pump motor on | |
| maximum outlet water temperature. | a call for heat. If voltage is not present, check wiring |
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| |
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| back to the main control board. Replace the main |
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| control board if necessary. |
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| • If 120 VAC is present on a call for heat and the water |
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| heater pump is not operating, replace the pump. |
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| • Replace the main control board. |
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| External control is cycling too often. | • Check set point of the external control. |
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| |
Rem Ctrl Flt |
| • Check the wiring between the external control and the |
| unit. | |
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| |
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| • Replace the control. |
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| • Establish a heating load to remove the heat from the |
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| water heater loop. |
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| • Verify that the system is full of water and that all air |
|
| has been properly purged from the system. |
|
| • Verify that the water heater is piped properly into the |
|
| heating system. Refer to Section 6 - System Piping |
|
| of the Armor Water Heater Installation and Operation |
|
| Manual for the proper piping methods for the Armor |
|
| water heater. |
Service Blk | While the unit is in Service Mode, the outlet | • Check 120 VAC to the water heater pump motor on a |
| temperature has exceeded 185°F. | call for heat. If voltage is not present, check the wiring |
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| |
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| back to the main control board. Replace the main |
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| control board if necessary. |
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| • If 120 VAC is present on a call for heat and the water |
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| heater pump is not operating, replace the pump. |
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| • Verify that the water heater pump is set to the proper |
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| speed or that the water heater pump is the proper |
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| size. Reference Section 6 - System Piping of the |
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| Armor Water Heater Installation and Operation |
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| Manual for water heater pump specifications. |
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