Table 5. Alert Codes and Troubleshooting | Critical alerts are displayed on Home (user) screen, in the Homeowner alert button, and in the Installer | |||
alert button. Minor and Moderate alerts are found only in the Installer alert button. | ||||
|
|
| ||
Alert |
|
|
| |
Code | Priority | Alert Text | Steps to clear | |
|
|
|
| |
275 | Critical | (Furnace) The furnace flame is out of sequence. | The system will go into Watchguard mode. Shut off gas. Check for gas valve leak. The alarm/fault | |
|
|
| will clear on next successful ignition. | |
|
|
|
| |
276 | Critical | (Furnace) The furnace is not able to calibrate or | The system will go into Watchguard mode. Check vent system and pressure | |
|
| the high pressure switch opened or failed to | switch wiring connections. The fault/alarm will clear when the furnace calibrates itself successfully. | |
|
| close in run mode. |
| |
|
|
|
| |
290 | Critical | (Furnace) There is a problem with the furnace | The system will go into Watchguard mode. Measure resistance of hot surface igniter. Replace the hot | |
|
| ignition circuit. | surface ignitor it is not within specifications. The alarm/fault will clear on next successful ignition. | |
|
|
|
| |
291 | Critical | (Furnace) The heating airflow is below the mini- | The system will go into Watchguard mode. Check for dirty filters and other air flow restrictions. Check | |
|
| mum required level. | blower performance. The alarm/fault will clear when a heat call ends successfully. | |
|
|
|
| |
292 | Critical | (Furnace / Air Handler) The (furnace or air−han- | The system will go into Watchguard mode. Indoor blower motor unable to start. This could be due to | |
|
| dler) indoor blower motor will not start. | seized bearing, stuck wheel, obstruction etc. Replace motor or wheel if assembly does not operate or | |
|
|
| meet performance standards. The alarm/fault clears after the indoor blower motor starts successfully. | |
|
|
|
| |
294 | Critical | (Furnace) There is over current in the furnace | The system will go into Watchguard mode. Check combustion blower bearings, wiring and amps. | |
|
| inducer motor. | Replace if does not operate or does not meet performance standards. The alarm/fault clears after | |
|
|
| inducer current is sensed to be in−range after the ignition following the Watchguard mode or reset. | |
|
|
|
| |
295 | Minor | (Furnace) The indoor blower motor is over heat- | Indoor blower motor over temperature (motor tripped on internal protector). Check motor bearings | |
|
| ing. | and amps. Replace if necessary. The alarm/fault clears after blower demand is satisfied. | |
|
|
|
| |
310 | Critical | (Furnace / Air Handler) There is a problem with | Compare outdoor sensor resistance to temperature/resistance charts in installation instructions. | |
|
| (furnace or air−handler) discharge air sensor. | Replace sensor if necessary. The alarm/fault is cleared 30 seconds after fault is detected as recov- | |
|
|
| ered. | |
|
|
|
| |
311 | Minor | (Furnace) The heat firing rate has been reduced | Warning Only. Furnace blower in cutback mode due to restricted airflow. Reduce firing rate every 60 | |
|
| to match available airflow (cutback mode). | seconds to match available CFM. Check filter and duct system. To clear, replace filter if needed or | |
|
|
| repair/add duct. 2−stage controls will reduce firing rate to 1st stage. The alarm/fault clears when a | |
|
|
| heat call finishes successfully. | |
|
|
|
| |
312 | Minor | (Furnace / Air Handler) The blower cannot pro- | Warning Only. Restricted airflow − Indoor blower is running at a reduced CFM (Cutback Mode − The | |
|
| vide the requested CFM due to high static. | variable speed motor has pre−set speed and torque limiters to protect the motor from damage caused | |
|
|
| by operating outside of design parameters (0 to 0.8" e.g.. total external static pressure). Check filter | |
|
|
| and duct system. To clear, replace filter if needed or repair/add duct. The alarm/fault is cleared after | |
|
|
| the current service demand is satisfied. | |
|
|
|
| |
313 | Minor | (Furnace / Air Handler) The indoor and outdoor | Check for proper configuring in installation instructions. Alarm is just a warning. The system will | |
|
| unit capacities do not match. | operate, but might not meet efficiency and capacity parameters. The alarm will clear after commis- | |
|
|
| sioning is complete. | |
|
|
|
| |
344 | Critical | (Furnace) Relay Y1 Failure | Y1 relay failed; operation stopped. Alarm clears 300 seconds after Y1 input sensed OFF. | |
|
|
|
| |
table continued on next page
506920−01 09/12 | Page 50 |
