TG / TH Fault Codes (FC Errors) – Gas Heater Diagnostics & Common Faults


Covers TG and TH ducted gas heater fault codes, error codes, flashing LED diagnostics, and common heater faults.


## Links to Most Common Searched TG / TH Faults 
- FC19 – Reset / over-temperature - TG, TH DGH FC19 resetting and checking for FC10's in Spectrolink fault code history: Seeley International Pty Ltd 


- FC10 – HX OT fault - TG / TH FC10 HX OT1 open - airflow restriction: Seeley International Pty Ltd 


- FC7 – Ignition failure - TG, TH DGH - FC7 & 11: Seeley International Pty Ltd 



For TQ / TQM fault codes, see related guide:

TQ / TQM Fault Codes (FC Errors) + ICS LED Flash Guide – Diagnostics & Quick Checks: Seeley International Pty Ltd



Click here to view YouTube video Spectrolink SCC accessing and clearing fault code history





YouTube video checking duct thermistor temperature using Spectrolink SCC