Service Manual
3Troubleshooting (continued)
Table 3E (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Water Heater Interface
FAULT | DESCRIPTION | CORRECTIVE ACTION | ||||
|
|
| ||||
| The actual fan RPM is 30% higher than what | • Vent/air intake lengths exceed the maximum allowed | ||||
Fan High | is being called for. | lengths. Refer to Section 3 - General Venting of the | ||||
| Armor Water Heater Installation and Operation | |||||
OR |
| Manual for proper lengths. |
|
|
|
|
Fan Speed High |
| • Check for obstruction or blockage in the vent/air | ||||
(will require a manual |
| |||||
| intake pipes or at terminations. | |||||
reset once the condition |
| |||||
|
|
|
|
|
| |
has been corrected. Press |
| • Check the wiring connections at the fan and at the | ||||
the RESET button on the |
| main control board. |
|
|
|
|
SMART SYSTEM display |
|
|
|
|
|
|
to reset.) |
| • Replace the fan. |
|
|
|
|
|
| • Replace the main control board. | ||||
|
|
| ||||
Sensor Open | Either the inlet water or outlet water | • Check the sensors and their associated wiring. | ||||
(will require a manual | temperature sensor has been disconnected. | Repair or replace the sensor or wiring if damaged. | ||||
reset once the condition |
| • Measure the resistance of the sensors and compare | ||||
has been corrected. Press |
| |||||
| the resistance to the tables | on page 23 of this | ||||
the RESET button on the |
| |||||
| manual. |
|
|
|
| |
SMART SYSTEM display |
|
|
|
|
| |
|
|
|
|
|
| |
to reset.) |
| • Replace the sensor if necessary. | ||||
|
|
| ||||
Sensor Shorted | Either the inlet water or outlet water | • Check the sensors and their associated wiring. | ||||
(will require a manual | temperature sensor has been shorted. | Repair or replace the sensor or wiring if damaged. | ||||
reset once the condition |
|
|
|
|
|
|
has been corrected. Press |
| • Measure the resistance of the sensors and compare | ||||
the RESET button on the |
| the resistance to the tables on page 23 of this | ||||
SMART SYSTEM display |
| manual. |
|
|
|
|
to reset.) |
| • Replace the sensor if necessary. | ||||
|
| |||||
|
|
| ||||
Aux. Proving | An optional remote proving switch is not | • Check function of remote devices. | ||||
(will require a manual | making. | • Check for loose or misplaced jumper if auxiliary | ||||
reset once the condition |
| |||||
has been corrected. Press |
| proving switch is not installed. |
|
|
|
|
the RESET button on the |
|
|
|
|
|
|
SMART SYSTEM display |
|
|
|
|
|
|
to reset.) |
|
|
|
|
|
|
|
|
|
| |||
| The flue temperature has exceeded the set | • Inspect the heat exchanger. | Reference page 20 of | |||
| parameters for the water heater. | this manual for the procedure on how to clean the flue | ||||
|
| side of the heat exchanger. |
|
|
|
|
|
| • Inspect the flue sensor and associated wiring. | ||||
|
| Measure the resistance of the flue sensor and | ||||
|
| compare to Table 3C on page 23 of this manual. | ||||
Temp O/Shoot |
| Replace the sensor if necessary. | ||||
|
| • Verify that the vent/air intake pipes are properly | ||||
|
| installed and that there are no obstructions. | ||||
|
| • Replace the main control board. | ||||
|
|
|
|
|
|
|
| Scaling has reduced water flow. | • Deliming may be required. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 29 |
|
|
|
|
|
| ||
|
|
|
|
| ||
