Wolf MKS 85 Installation & Servicing Instructions Manual page 16

Fault
Burner does not operate
registers a fault
Heating circuit pump
does not operate
Reservoir pump
does not operate
Heating system operates,
but room temperature too low
16
Fault-Cause-Cure
Cause
No voltage present
Oil tank empty /
gas feed shut off
Burner fault
Temperature safety limiter
has operated
Oil filter blocked
Equipment in summer mode
Heating circuit pump jammed
Heating circuit pump faulty
Faulty reservoir temp. regulator
Reservoir pump jammed
Faulty reservoir pump
Maximum boiler temperature
set too low
Cure
Check fuse, electrical connections, setting of the or
contr. operat. switch and heating emergency off switch.
Fill oil tank /
open gas feed
Press fault clear button on the furnace controller.
(See burner assembly instructions)
Press the release on the controller.
Replace oil filter
Check summer/winter switch
Turn the pump shaft with a screwdriver.
Replace heating circuit pump.
Examine reservoir temperature regulator and
replace if necessary.
Turn the pump shaft with a screwdriver.
Replace reservoir pump.
Set higher maximum boiler temperature.