Diagnostics and Specific Fault Finding
Gas Heating diagnostics and fault finding
TQ DGH FC1, FC2, FC3 - FC1 PS low closed at start, FC2 PS low failed to close, FC3 PS low opened during run ⚠️ Safety Notice – Gas Heating Products Thi...
Thu, 16 Jul, 2026 at 11:30 AM
Start-up and Run Flowcharts TQ Single Stage TQ3 TQD3 BMQ3 ⚠️ Safety Notice – Gas Heating Products This appliance must only be installed, commissioned,...
Thu, 16 Jul, 2026 at 11:33 AM
THM5 - THM6 Start and Run flowcharts - fault diagnosis flowchart for normal operation ⚠️ Safety Notice – Gas Heating Products This appliance must only ...
Thu, 16 Jul, 2026 at 11:31 AM
THM DGH Fault Code Diagnostics ⚠️ Safety Notice – Gas Heating Products This appliance must only be installed, commissioned, serviced and repaired by su...
Thu, 16 Jul, 2026 at 11:32 AM
TQ DGH - FC11 Loss of flame signal ⚠️ Safety Notice – Gas Heating Products This appliance must only be installed, commissioned, serviced and repaired ...
Thu, 16 Jul, 2026 at 11:34 AM
TG, TH DGH FC7 & FC11 - Flame signal strength test FC+ and FC- 1.5VDC and above is good ⚠️ Safety Notice – Gas Heating Products This appliance must...
Thu, 16 Jul, 2026 at 11:36 AM
TQ / TQM / TQR Heater Room Fan Motor Testing & Troubleshooting Guide (ICS, Capacitor, Thermistor & Fan Speed Checks) ⚠️ Safety Notice – Gas Heat...
Thu, 16 Jul, 2026 at 11:48 AM
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 ⚠️ Safety Notice – Gas Heating Products This a...
Thu, 16 Jul, 2026 at 11:38 AM
TQA5X30 FC23 Fault – Room Fan Not Running Diagnostics (Nicotra Interface PCBA) ⚠️ Safety Notice – Gas Heating Products This appliance must only be instal...
Thu, 16 Jul, 2026 at 11:39 AM
TA TA3 TB3 Pre June 2004 Johnson G821 ignition and flame sense PCB system service diagnostics ⚠️ Safety Notice – Gas Heating Products This appliance mu...
Thu, 16 Jul, 2026 at 11:41 AM