User manual HRE-serie version 6, November 2013
18
Appendix C Troubleshooting
Listed below you will find a list with possible problems, their reasons and solutions. When you
encounter problems not listed, you should contact your dealer.
Never try to solve problems on your
own.
Problem
Possible reason
Possible solution
Burner will not start
Oil supply interrupted
Bleed the oil filter
Change contaminated filter element
Fill the oil tank
Power supply interrupted
Check the fuses
Check the power supply
Check the maximal thermostat
Burner stops
Reset burner (once)
Flame protection dirty (photo cell)
Clean glass of flame protection
Flame protection defect
(photo cell)
Replace flame protection
Burner starts pulsing
Flue gas flow interrupted
Clear chimney opening
Boiler dirty
Clean boiler
Oil supply interrupted
See above
Nozzle defective
Replace nozzle
Burner shows error
Reset burner (once)
Low voltage
Check voltage level
Oil supply interrupted
See above
Boiler does not react to thermostat
Boiler thermostat incorrectly
adjusted
Adjust boiler thermostat
Battery of room thermostat flat
Replace battery
Water is not circulating
Pump couplings are closed
Open pump couplings
Pump not connected to electricity
supply
Connect pump
