| Heater: Thermo Top > 300.000 |
|---|
| Heater can't be switched on |
| Heater fails to ignite, combustion air fan motor is operating |
| Heater ignites and operates, however combustion stops when start-up is repeated |
| Heater operates for a few minutes only |
| Heater operates, however heat output too low |
| Heater is emitting smoke, blue smoke or soot in exhaust gas |
| Heater cycles frequently between full load/part load and off |
| Heater emits 'clicking' noise during com-bustion and/or the run-down period |