Heatline
C24 & C28
| Problem | Solution |
| Sparking but no gas | Check overheat thermostats for continuity, these may cut power to the gas valve from the PCB |
| No heating after PCB been replaced | Check the room stat link is fitted near the transformer. If you change the PCB you will have to remove the molex room stat plug from the old PCB and fit on the new one |