Diagnostics and Specific Fault Finding

Gas Heating diagnostics and fault finding

Start-up and Run Flowcharts TQ Single Stage TQ3 TQD3 BMQ3
Start-up and Run Flowcharts TQ Single Stage TQ3 TQD3 BMQ3 
Mon, 10 Jul, 2023 at 9:01 AM
TG, TH DGH FC11 displayed to user on Spectrolink
TG, TH DGH FC11 displayed to user on Spectrolink Click here to view YouTube video Spectrolink SCC accessing and clearing fault code history ...
Tue, 24 Oct, 2023 at 4:21 PM
TQ DGH - FC20, FC21, FC35, FC36 Flame rollout failures - bridging loom (Pt # 651071)
TQ DGH - FC20, FC21, FC35, FC36 Flame rollout failures - bridging loom (Pt # 651071) Fault code history can be accessed: SETTINGS/SERVICE/GAS HEATER 01...
Wed, 15 May, 2024 at 2:23 PM
Advise for home owners Gas rate & fan speed adjustment TQM, TQS4, TQS5, TQS6 and TQS7 series heaters
Advise for home owners Gas rate & fan speed adjustment TQM, TQS4, TQS5, TQS6 and TQS7 series heaters
Fri, 13 Aug, 2021 at 12:59 PM
TQ DGH - Measured output voltage to motor is less than 240 Volts - FC4 Thermistor > 70 deg C during run, FC10 HX OT1 opened, FC19 HX OT2 opened
TQ DGH - Measured output voltage to motor is less than 240 Volts - FC4 Thermistor > 70 deg C during run, FC10 HX OT1 opened, FC19 HX OT2 opened Infor...
Mon, 15 May, 2023 at 12:29 PM
TQA 5X30 FC23 (room fan not running) Diagnostics
TQA 5X30 FC23 (room fan not running) Diagnostics  Fault code history can be accessed: SETTINGS/SERVICE/GAS HEATER 01/7378 CONT/FAULT LOG YouTube Vi...
Wed, 15 May, 2024 at 2:17 PM
TQM THM DGH - Confirming modulating gas valve operation
TQM THM DGH - Confirming modulating gas valve operation 
Tue, 23 May, 2023 at 10:33 AM
TQ DGH - FC6 FC71 FC72 FC73 FC76 FC77 ICS Micro errors
TQ DGH - FC6 FC71 FC72 FC73 FC74 FC75 FC76 FC77 FC78 ICS Micor errors
Mon, 12 Aug, 2024 at 12:46 PM
THM5 - THM6 Start and Run flowcharts - fault diagnosis flowchart for normal operation
THM5 - THM6 Start and Run flowcharts - fault diagnosis flowchart for normal operation
Tue, 9 Jul, 2024 at 2:48 PM
THM DGH FC2
THM DGH FC2  Click here to view YouTube video Spectrolink SCC accessing and clearing fault code history
Tue, 24 Oct, 2023 at 4:22 PM