
Tempstar furnaces are widely known for their highly efficient and reliable HVAC systems. With their Energy Star Certification and strong warranty, many people go for their furnaces. However, if you’re facing issues with your Tempstar furnace, it may be time for a repair or maintenance call.
But before you go ahead and call a professional, you can troubleshoot some issues on your end. In this article, we’re discussing exactly that – from troubleshooting your Temstar furnace to understanding its error codes and more.
Common Issues with Tempstar Furnaces and How to Solve Them
Decoding Tempstar Furnace Error Codes
LED Flash Indications
Continuous Flash
Indicates normal operation with an active heat call.
Heartbeat Flashing
This signifies normal operation without a heat call.
Specific Error Codes
1 Flash
System lockout due to excessive retries or recycles.
2 Flashes
Indicates a pressure switch stuck open; check for obstructions in the exhaust pipe vents or issues with the pressure switch itself.
3 Flashes
Suggests a pressure switch stuck closed; examine the pressure tubing for blockages.
4 Flashes
High limit switch is open, potentially due to a dirty filter, blocked ductwork, or an issue with the fan.
5 Flashes
Detects flame when none should exist; investigate a possible leaky gas valve or defective flame sensor.
6 Flashes
Ignition failure; verify gas flow, igniter functionality, and the condition of the flame sensor.
7 Flashes
Limit circuit lockout; this happens when the limit or flame rollout switch remains open for more than 3 minutes. Reset the power to clear this.
8 Flashes
Gas heating lockout; check if the gas valve is operational.
9 Flashes
Low flame detected; clean the flame sensor and ensure the burner and gas supply are functioning correctly.
10 Flashes
Incorrect polarity in power supply; confirm that the wires for power supply polarity are correctly working.
Tempstar furnaces communicate operational issues through error codes displayed as LED light sequences on the control board. These codes are essential for identifying problems:
Additional Multi-flash Codes
1+5 Flashes
Indicates a blower motor lockout; check the motor and capacitor for functionality.
2+4 Flashes
The secondary voltage fuse has blown; inspect for any short circuits.
3+5 Flashes
Points to a gas valve error; examine the wiring and connections of the gas valve installed.
4+1 Flashes
Alerts to a temperature rise that is too high or too low; assess the filter and overall airflow to decide if you need it replaced or cleaned.
Understanding when to call an HVAC professional
While some issues can be handled on your own, a majority of them need the intervention of an HVAC professional – like those at Comfort Union. A lot of the ones mentioned above call for a quick inspection but one of the most dangerous issues is if your carbon monoxide detectors are alarming you. Call us immediately if you see this or if you see yellow flames instead of blue in your furnace.
We help our customers fix all the problems – be it with your natural gas furnace or with your air conditioning unit. Reach out to us to learn more and ask any questions about your furnace! We’ll be happy to answer all your queries in a correct and precise manner.