Troubleshooting - Wolf ComfortLine Series Installation And Maintenance Instructions Manual

Troubleshooting

Fault
Burner does not start
or enters a fault state
at the control unit
Heating circuit pump does System in summer mode
not start
Cylinder loading pump
does not run
Heating system operational, Maximum boiler temperature Raise maximum boiler temperature.
but room temperature
too low
Heat-up takes too long
DHW temperature
too low
Cause
No voltage present
Oil tank empty /
Gas supply line shut off
Burner fault
Safety temperature
cut-out activated
Oil filter clogged
Heating circuit pump
seized up
Heating circuit pump faulty
DHW cylinder thermostat
faulty
Cylinder loading pump
seized up
Cylinder loading pump faulty Replace the DHW loading pump.
set too low.
Heating water temperature
too low
(check at the DHW cylinder
flow, not at the boiler)
Too little heating water
(creates wider spread,
i.e. return temperature too low)
Indirect coil not vented
Indirect coil scaled up
Thermostat switches
OFF too soon
Return temperature
too low
(e.g. spread too wide)
Remedy
Fuse, electrical connections,
Check the position of the ON/OFF switch
and heating sys. emergency stop switch.
Fill oil tank /
open gas supply line.
Press the reset button at burner control
unit,
(see burner installation instructions).
Press the reset button at the control
unit.
Replace oil filter.
Check summer/winter switch position.
Turn the pump shaft with a screwdriver.
Replace the heating circuit pump.
Check the safety thermostat
and replace, if necessary.
Turn the pump shaft with a screwdriver.
Raise the temperature
(adjust thermostat)
Install larger DHW cylinder loading pump
Vent indirect coil with loading pump OFF
Descale indirect coil
Adjust thermostat
Install larger DHW cylinder loading pump