3 Troubleshooting (continued)
Table 3E (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Operator Interface
FAULT | DESCRIPTION | CORRECTIVE ACTION |
|
|
|
| After downloading parameters from a laptop, | • Press the ENTER/RESET button on the Smart |
Parameters | the main control board must be reset. | System display panel. |
Progr |
|
|
(Will require a manual |
|
|
reset once the condition |
|
|
has been corrected. Press |
|
|
the RESET button on the |
|
|
SMART SYSTEM display |
|
|
to reset.) |
|
|
|
|
|
| While the unit is in Service Mode, the outlet | • Establish a heating load to remove heat from the |
| temperature has exceeded 185°F (85°C). | system. |
|
| • Verify that the system is full of water and that all air |
|
| has been properly purged from the system. |
|
| • Verify that the appliance is piped properly into the |
|
| system. Refer to the Water Connections Section of |
|
| the Installation and Operation Manual for the proper |
Service Blk |
| piping methods. |
| • Check 120 VAC to the pump motor on a call for | |
|
| |
|
| heat. If voltage is not present, check the wiring |
|
| leading to the main control board. Replace the main |
|
| control board if necessary. |
|
| • If 120 VAC is present on a call for heat and the |
|
| pump is not operating, replace the pump. |
|
|
|
| 120 VAC input to the main control board has | • Check 120 VAC supply to the transformer. |
| dropped below 100 VAC. | • Check wiring connections at the low voltage terminal |
|
| |
|
| strip. |
Low Voltage |
| • Check the wire size/length to remote devices. |
|
| • Replace the main control board. |
|
|
|
41 
